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86-591-8347 7500

Lenses
Plano-convex Lenses

Plano-Convex lenses have positive focal lengths, converge incident light, and from both real images(as might be focused in a piece of paper), and virtual images(as are seen through the lenses when they are used as magnifiers).They are widely used in telescopes, collimators, optical transceivers, magnifiers, radiometers and condensers.

 

Specifications
MaterialBK7 or UV Fused Silica
Diameter Tolerance+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Surface Figureλ/8@632.8nm
Contration1 arc min
CoatingSingle Layer MgF2 or "V"AR coating

 BK7 Pl-cx Lenses

Part NumberΦRTcTeEFL
PCX-063-R0656.356.563.819312.7
PCX-063-R1316.3513.1183.39325.7
PCX-063-R1656.3516.533.308331.8
PCX-063-R1966.3519.6703.258338.1
PCX-127-R13112.713.1185.330325.4
PCX-127-R19612.719.6704.052338.1
PCX-127-R25812.725.5893.789350.2
PCX-127-R39112.739.1703.519375.6
PCX-127-R51512.751.5203.3923100
PCX-127-R77412.777.4503.2513150
PCX-254-R13125.413.11812.807325.4
PCX-254-R258425.425.5896.321350.2
PCX-254-R39125.439.1705.122375.6
PCX-254-R51525.451.5204.5853100
PCX-254-R77425.477.4504.0473150
PCX-254-R103525.4103.5103.7833200
PCX-254-R129025.4129.0603.6263250
PCX-254-R155025.4155.0403.5213300
PCX-254-R206125.4206.1003.3903400
PCX-254-R259425.4259.4003.3123500
PCX-254-R387325.4389.206
3.208
3
750
PCX-254-R517625.4517.6003.15631000
PCX-508-R51550.851.5209.6733100
PCX-508-R77450.877.4507.2793150
PCX-508-R103550.8103.5106.1703200
PCX-508-R129050.8129.0605.5213250
PCX-508-R155050.8155.0405.5093300
PCX-508-R206150.8206.1004.5663400
PCX-508-R259450.8259.4004.2513500
PCX-508-R387350.8387.3003.8333750
PCX-508-R517650.8517.6003.62531000
Double-convex Lenses

Like Plano-convex lens, double convex lenses have positive focal lengths and form both real and virtual images. Symmetry is assured by finishing both surfaces with the same tool. Because of symmetry, aberrations including coma, distortion and lateral chromatic aberration almost exactly canceled at unit conjugate radio. Double convex lenses have shorter focal lengths than Plano-convex lenses of equal diameter and surface radius.

Specifications
MaterialBK7 or UV Fused Silica
BK7 or UV Fused Silica+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Contration1 arc min
CoatingSingle Layer MgF2 or "V"AR coating

BK7 Bi-cx Lenses

Part NumberΦRTcTeEFL
DCX-063-R0566.355.6194.96036.4
DCX-063-R1246.3512.4003.820312.7
DCX-063-R1906.3519.0553.530319
DCX-063-R2576.3525.7003.390325.4
DCX-127-R11812.711.8006.680312.7
DCX-127-R18612.718.6645.220319
DCX-127-R25512.725.5004.610325.4
DCX-127-R38712.738.7304.050338.1
DCX-127-R51212.751.2903.790350.2
DCX-127-R64312.764.3923.628362.9
DCX-127-R77412.777.4503.521375.6
DCX-254-R16725.416.76014.725319
DCX-254-R24325.424.38010.132325.4
DCX-254-R38125.438.1107.360338.1
DCX-254-R50825.450.8206.226350.2
DCX-254-64025.464.0575.543362.9
DCX-254-R77025.477.0905.102375.6
DCX-254-R90325.490.3504.792388.3
DCX-254-R102525.4102.5704.5783100
DCX-254-R128725.4128.7004.2583125
DCX-254-R154325.4154.3534.0473150
DCX-254-R180825.4180.8403.8963175
DCX-254-R206125.4206.1003.7833200
DCX-254-R257725.4257.7893.6263250
DCX-254-R517625.4517.6003.3133500
DCX-254-R1033025.41033.0743.15631000
DCX-508-R101350.8101.3909.4443100
DCX-508-R257650.8257.6465.5123250
DCX-508-R517650.8517.6004.2513500

 

Plano-concave Lenses

Plano-concave lens has a negative focal length, diverges collimated incident light, and forms only virtual images which are seen through the lens. It is often used to expand light beams or increase focal lengths in existing systems.

Specifications
MaterialBK7 or UV Fused Silica
BK7 or UV Fused Silica+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Contration1 arc min
CoatingSingle Layer MgF2 or "V"AR coating

BK7 Pl-cv Lenses

Part NumberΦRTcTeEFL
PCV-063-R0636.35-6.3502.53.170-12.5
PCV-063-R1296.35-12.9122.52.820-25
PCV-127-R12912.7-12.9122.53.830-25
PCV-127-R25812.7-25.8592.53.140-20
PCV-127-R38712.7-38.7302.52.920-75
PCV-127-R51512.7-51.5202.52.820-100
PCV-254-R12925.4-12.9122.59.400-25
PCV-254-R25825.4-25.8592.55.170-50
PCV-254-R38725.4-38.7302.54.220-75
PCV-254-R51525.4-51.5202.53.780-100
PCV-254-R77425.4-77.4502.53.350-150
PCV-254-R103525.4-103.5102.53.130-200
PCV-508-R38750.8-38.7302.59.960-75
PCV-508-R51550.8-51.5202.57.830-100
PCV-508-R77450.8-77.4502.55.950-150
PCV-508-R103550.8-103.5102.55.060-200
PCV-508-R129050.8-129.0602.54.540-250
PCV-508-R259450.8-259.4002.53.510-500
Double-concave Lenses

Like plano-concave lenses, double-concave lenses have negative foccal lengths, diverge collimated incident light and form only virtual image which are seen through the lenses. They are often used to expand light beam or increase focal lengths in existing systems and are normally used in combination with other lenses. In a single lens application you shoud consider using them in prefenrence to a single plano-concave lens if the magnification lies in the region.

Specifications
MaterialBK7 or UV Fused Silica
BK7 or UV Fused Silica+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Contration1 arc min
CoatingSingle Layer MgF2 or "V"AR coating

BK7 Bi-cv Lenses

Part NumberΦRTcTeEFL
DCV-063-R0686.35-6.8512.53.750-6.3
DCV-063-R1346.35-13.4102.53.120-12.5
DCV-127-R13412.7-13.4102.55.070-12.5
DCV-127-R126312.7-26.3002.53.760-25
DCV-127-R52112.7-52.1202.53.130-50
DCV-127-R77912.7-77.9802.52.920-75
DCV-127-R103512.7-103.5102.52.820-100
DCV-254-R26325.4-26.3002.57.740-25
DCV-254-R52125.4-52.1202.55.040-50
DCV-254-R77925.4-77.9802.54.190-75
DCV-254-R103525.4-103.5102.53.760-100
DCV-254-R155425.4-155.4662.53.340-150
DCV-254-R207125.4-207.1482.53.130-200
DCV-508-R77950.8-77.9802.59.360-75
DCV-508-R103550.8-103.5102.57.600-100
DCV-508-R155450.8-155.4662.55.880-150
DCV-508-R207150.8-207.1482.55.030-200
DCV-508-R258850.8-258.8242.54.520-250
DCV-508-R517650.8-517.6002.53.510-500
Positive Meniscus Lenses

These lenses may be used to increase the numerical aperture of a positive lens assembly, without an undue increase in the aberrations.

Specifications
MaterialBK7 or UV Fused Silica
BK7 or UV Fused Silica+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Contration1 arc min
CoatingSingle Layer MgF2 or "V"AR coating

Positive Meniscus Lenses

Part NumberΦR1TcTeEFL
MNP-254-R515R100025.451.5204.283.5200
MNP-254-R851-R250025.485.1134.123.5250
MNP-254-R1025-R300025.4102.5704.023.5300
MNP-254-R1267-R322025.4126.7703.893.5400
MNP-254-R1554-R387625.4155.4663.813.5500
Negative Meniscus Lenses

The best lens from where one conjugates is relatively for from the lens or where both conjugates are the same size of the lens.

Specifications
MaterialBK7 or UV Fused Silica
BK7 or UV Fused Silica+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Contration1 arc min
CoatingSingle Layer MgF2 or "V"AR coating

Negative Meniscus Lenses

Part NumberΦR1TcTeEFL
MNN-254-R900-R33825.4902.323.92-100
MNN-254-R900-R38925.4902.023.3-125
MNN-254-R1000-R43025.41003.734.77-150
MNN-254-R950-R45725.495.02.863.8-175
Achromatic Doublets

Doublet lens is a closely spaced and often cemented, combination of positive and negative elements of differing refractive index. These elements are chosen so that the chromate aberration is cancelled at two distant and well-separated wavelengths.

Specifications
MaterialAccording to your design
Diameter Tolerance+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-0.5%
Clear Aperture>90%
Surface Quality40-20 S/D
Surface Figureλ/8@632.8nm
Contration3 arc min
CoatingSingle Layer MgF2 or BBAR coating


Plano-convex Cylindrical Lenses

These lenses are used in application requiring magnification only, such as in transforming a point image into a line image or changing the height of an image without changing its width or vice versa. Therefore serving a variety application, such as slit line detector array illumination, bar code scanning, holography, optical information processing and computer, laser projection. 

Specifications
MaterialBK7 or UV Fused Silica
Dimension Tolerance+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-1%
Clear Aperture>90%
Surface Quality40-20 S/D
Surface Figureλ/8@632.8nm
Contration3 arc min
CoatingUpon Request

Pl-cx Cylindrical Lenses

Part NumberXRTcTeEFL
CPCX-254-127-R06525.46.577.9312.7
CPCX-508-254-R19750.819.77.64338.1
CPCX-508-254-R25950.825.956.32350.2
CPCX-508-254-R32550.832.525.58362.9
CPCX-508-254-R39050.839.095.12375.6
CPCX-508-508-R51750.851.79.673100
CPCX-508-508-R77550.877.557.283150
CPCX-508-508-R103450.8103.46.173200
CPCX-508-508-R155150.8155.15.093300
CPCX-508-254-R23950.823.096.81350.2
CPCX-508-254-R46050.8464.793100
CPCX-508-508-R69050.8697.853150
CPCX-508-508-R92050.8926.583200
CPCX-508-508-R138050.81385.363300
Plano-concave Cylindrical Lenses

Specifications
MaterialBK7 or UV Fused Silica
Dimension Tolerance+0.0, -0.1mm
Center Thickness Tolerance+/-0.1mm
Paraxial Focal Length+/-1%
Clear Aperture>90%
Surface Quality40-20 S/D
Surface Figureλ/8@632.8nm
Contration3 arc min
CoatingUpon Request

Pl-cv Cylindrical Lenses

Part NumberXRTcTeEFL
CPCV-254-127-R03325.4-3.3167.36-6.4
CPCV-254-127-R06525.4-6.5769.58-12.7
CPCV-254-127-R12925.4-12.9267.4-25
CPCV-508-190-R25850.8-25.8567.62-50
CPCV-508-254-R75050.8-38.7767.97-75
CPCV-508-254-R51750.8-51.767.46-100
CPCV-508-254-R77550.8-77.5566.97-150
CPCV-508-254-R103450.8-103.466.72-200
CPCV-508-190-R11650.8-11.682.56.73-25.4
CPCV-508-254-R23050.8-23.092.55.99-50.2
CPCV-508-254-R46050.8-462.54.15-100
CPCV-508-508-R69050.8-692.57.15-150
CPCV-508-508-R92050.8-922.55.93-200
CPCV-508-508-R138050.8-1382.54.76-300
Prisms
Penta Prisms

Penta prism have two important properties. The first is that as the image is deviated by 90 degrees it is neither inverted nor reversed. The second is that the penta-prism is a constant deviation prism, meaning that the same exact 90-degree deviation angle applies to all rays transmitted by the useful aperture regardless of the angles between these rays and the optical axis. The deviation is thus independent of the prism orientation, making the penta-prism especially important in application in which prism orientation can’t be precisely controlled. This prism is commonly used in optical tooling, alignment, range finding, surveying, and other instrumental applications.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Deviation10 arc sec
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm

Coating

AR coating at input&output face

HR coating at reflective faces

 BK7 Penta Prisms

Part NumberSize A(mm)Size H(mm)
PTP-070-0707.07.0
PTP-100-10010.010.0
PTP-127-12712.712.7
PTP-150-15015.015.0
PTP-200-20020.020.0
PTP-254-25425.425.4

 

Dove Prisms

Dove prisms are used as image rotators in variety of optic-mechanical system. As the prism is rotated, the image passing through will rotate at twice the angular rate of the prism. Light entering the dove prism must be parallel or collimated, because the length of the prism is four or five times the height of the prism. The hypotenuse face of a dove prism is the face of the largest area. Normally the dove prism is used in the total internal reflection mode, with the hypotenuse face un-aluminized. Cleanliness of this face is important.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Angle Tolerance1 arc min
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm

Coating

Upon Request

 BK7 Penta Prisms

Part NumberSize H(mm)Size A(mm)Size B(mm)
DPR-100-100-BK71042.310
DPR-150-150-BK71563.515
DPR-200-200-BK72084.720
DPR-100-100-UVFS1044.910
DPR-150-150-UVFS1567.415
DPR-200-200-UVFS2089.920
Right Angle Prisms

Right-angle prisms are often preferable to an inclined mirror in applications involving severe acoustic or inertial loads. This is because a right-angle prism is easier to mount and deforms much less than a mirror in response to external mechanical stress. Very high transmission can be achieved by using the hypotenuse face in total internal reflection, and by antireflective coating on the entrance and exit faces. Alternatively, the hypotenuse face can be used in external reflection, and coating with a metallic reflective coating.

Specifications
MaterialBK7, UV Fused Silica
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Angle Tolerance1 arc min
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm

Coating

Upon Request

Right Angle Prisms

Part NumberA=B(mm)Part NumberA=B(mm)
RAP-127-BK712.7RAP-127-UVFS12.7
RAP-150-BK715.0RAP-150-UVFS15.0
RAP-200-BK720.0RAP-200-UVFS20.0
RAP-254-BK725.4RAP-254-UVFS25.4

 

Corner prisms

It has three mutually perpendicular surfaces and a hypotenuse face, light entering through the hypotenuse is reflected by each of the three surfaces in turn and will emerge though the hypotenuse face parallel to the entering beam regardless of the orientation the incident beam, it is often used to the distance measurement, optical signal process and laser interferometer.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Deviation10 arc sec
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
Wavefront Distortionλ/4@632.8nm
CoatingUpon Request

BK7 Retro-Reflectors

Part NumberDiameter Φ(mm)Height H(mm)
RRP-127-09512.79.5
RRP-254-18825.418.8
RRP-380-2853828.5
RRP-640-4806448.0

 

Roof Prisms

Roof prism is combined with a right angle prism and a totally internally reflecting roof and they are attached by them largest aquare surfaces. It can invert and reverse an image, also, deflect the image 90°. Therefore, it is often used in Terrestrial telescopes, Viewing systems and Rangefinders.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Deviation10 arc sec
Surface Quality60-40 S/D
Flatnessλ/8@632.8nm

Coating

Upon Request

Roof Prisms

Part Number A=B(mm)H(mm)
RFP-230-3152331.5

 

Anamorphic Prisms

These two prisms can expand or contract the beam in one direction without any changes in the other direction. By adjusting the angles among the incident beam and two prisms, the shape of the beam can be changed. It is very easy to turn elliptical beam into circular beam.

Specifications
MaterialN-SF11
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Angle Tolerance29°27'±20''
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm

Coating

MgF2

 Anamorphic Prisms

Part NumberABC
ANP-120-085-SF1112128.5

 Other prisms are available upon request

Beamsplitters
Beamsplitter Plates

Plate beamsplitter consists of thin window. When using it, the two partial beams travel different optical paths. And the optical paths are decided on the thickness of plates and the incident angle.   

Specifications
MaterialBK7 or others
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%
Parallelism30 arc sec
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
CoatingT/R=50/50±5% or others

 

Beamsplitter Cubes

Cube beamsplitters are constructed by cementing two right angle prisms together with the appropriate interference coating on hypotenuse. The absorption loss to the coating is minimal. Transmission and reflection approach 50% (average) though the output is partially polarized.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Deviation1 arc min
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
CoatingT/R=50/50±5% or others

 

Polarizing Beamsplitter Cubes

Polarizing cube beamsplitters split randomly polarized beams into two orthogonal, linearly polarized components: S-polarized light is reflected at a 90 deg angle while P-polarized light is transmitted. Each beamsplitter consists of a pair of precision high tolerance right angle prisms cemented together with a dielectric coating on the hypotenuse of one of the prisms. A multi-layer antireflective coating has been applied to each face of the beamsplitter in order to produce maximum transmission efficiency.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
Deviation1 arc min
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
CoatingTp>98% & Ts<1%  Extinction ratio>150:1

 

Penta Beamsplitters

By adding a wedge and with partial reflective coating on one of the leaning surfaces of penta prisms, it can be used as a beamsplitter. It is often used in plumb level,  surveying, alignment, rangefinding and optical tooling.

Specifications
MaterialBK7
Dimension Tolerance+0.0, -0.1mm
Clear Aperture>90%
90°Deviation5 arc sec
180°Deviation10 arc sec
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
CoatingT/R=50/50±5% or others

 

Windows
Parallel Windows

Specifications
MaterialBK7, UVFS or others
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%
Surface Quality40-20 S/D
Wavefront Distortionλ/8@632.8nm
Parallelism10 arc sec
Coating"V"AR coating, BBAR coating or others

 Parallel Windows

Part NumberØ(mm)T(mm)
WIN-127-031-BK712.73.175
WIN-127-060-BK712.76
WIN-254-060-BK725.46
WIN-254-063-BK725.46.35
WIN-508-100-BK750.810
WIN-127-031-UVFS12.73.175
WIN-127-060-UVFS12.76
WIN-254-060-UVFS25.46
WIN-254-063-UVFS25.46.35

 

Rectangular Windows

Specifications
MaterialBK7, UVFS or others
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%
Surface Quality40-20 S/D
Wavefront Distortionλ/8@632.8nm
Parallelism10 arc sec
Coating"V"AR coating, BBAR coating or others

 BK7 Rectangular Windows

Part NumberA(mm)B(mm)T(mm)
WIN-127-063-0306.3512.73.0
WIN-254-127-06312.725.46.35

 

Square Windows

Specifications
MaterialBK7, UVFS or others
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%
Surface Quality40-20 S/D
Wavefront Distortionλ/8@632.8nm
Parallelism10 arc sec
Coating"V"AR coating, BBAR coating or others

 BK7 Square Windows

Part NumberA(mm)T(mm)
WIN-127-03012.73.0
WIN-254-06325.46.35

 

Brewster Windows

Specifications
MaterialBK7, UV Fused Silica
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%

Brewster Angle

56.6° for BK7 at 588nm

56.1° for UV Fused Silica at 308nm

Surface Quality40-20 S/D
Wavefront Distortionλ/8@632.8nm
Parallelism10 arc sec

 Brewster Windows

Part NumberØ(mm)T(mm)
WINB-080-020-BK78.02.0
WINB-100-020-BK710.02.0
WINB-160-020-BK716.02.0
WINB-254-020-BK725.42.0
WINB-060-020-UVFS6.02.0
WINB-080-020-UVFS8.02.0
WINB-100-020-UVFS10.02.0
WINB-160-030-UVFS16.03.0
WINB-254-030-UVFS25.43.0

 

Mirrors
Dieletric Coating Mirrors

Compare to metallic mirrors, dielectric mirrors exhibit high reflection, high damage threshold and good adhesion, but the bandwidth is not so wide as metallic mirrors.

Specifications
MaterialBK7 or others
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
CoatingR>99.8% R=(Rs+Rp)/2

 

Metallic Coating Mirrors

Metallic mirrors are excellent broad band reflectors. Toptec provides protected Aluminium, silver mirrors and enhanced Al mirrors as well.

Specifications
MaterialBK7 or others
Dimension Tolerance+0.0, -0.1mm
Thinckness Tolerance+/-0.1mm
Clear Aperture>90%
Surface Quality40-20 S/D
Flatnessλ/8@632.8nm
CoatingAl, Au, Ag protected

 

 

Waveplates
Low-order Waveplates

Low-order Waveplates which can be replaced by multi-order waveplate is designed to give a retardance of several full waves plus the desired fraction. This result a single, physically robust component with desired performance. However, even small variation in wavelength or temperature will result in signification changes in the desired fractional retardance.

Specifications
MaterialCrystal Quartz, MgF2
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/500@632.8nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

Standard Products

Half WaveplateQuarter Waveplate
WPL-100-1/2-λWPL-100-1/4-λ
WPL-127-1/2-λWPL-127-1/4-λ
WPL-150-1/2-λWPL-150-1/4-λ
WPL-200-1/2-λWPL-200-1/4-λ
WPL-254-1/2-λWPL-254-1/4-λ
Standard Wavelength:266nm,355nm,532nm,632.8nm,780nm,808nm,850nm,980nm,1064nm,1310nm,1480nm,1550nm

 

Optically Contacted Zero-order Waveplates

It is constructed of two multi-order waveplates with axis crossed. Thus, it performs as a zero-order waveplatebecause of the effect of two plates counteracting each other. It has wide temperature bandwidth and wavelength bandwidth properties.Because it is cemented, the damage threshold must be considered (about 10MW/cm2) when used.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/300@632.9nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

 Standard Products

Half WaveplateQuarter Waveplate
WPZO-100-1/2-λWPZO-100-1/4-λ
WPZO-127-1/2-λWPZO-127-1/4-λ
WPZO-150-1/2-λWPZO-150-1/4-λ
WPZO-200-1/2-λWPZO-200-1/4-λ
WPZO-254-1/2-λWPZO-254-1/4-λ

 

Air Spaced Zero-order Waveplates

Its performance is as good as cemented zero-order waveplate. Additionally, the air-spaced construction enable it suit for the high power laser application. The damage threshold is more than 500MW/cm2.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/300@632.9nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

 Standard Products

Half WaveplateQuarter Waveplate
WPZA-100-1/2-λWPZA-100-1/4-λ
WPZA-127-1/2-λWPZA-127-1/4-λ
WPZA-150-1/2-λWPZA-150-1/4-λ
WPZA-200-1/2-λWPZA-200-1/4-λ
WPZA-254-1/2-λWPZA-254-1/4-λ

 

Cemented Zero Order Waveplates

This type of zero order waveplates is constructed of two multiple order wavewplate with their axes crossed. Thus, the effect of the first plate is canceled by the second, except for the residual difference between them.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/300@632.9nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

 

 

Half WaveplateQuarter Waveplate
WPZC-100-1/2-λWPZC-100-1/4-λ
WPZC-127-1/2-λWPZC-127-1/4-λ
WPZC-150-1/2-λWPZC-150-1/4-λ
WPZC-200-1/2-λWPZC-200-1/4-λ
WPZC-254-1/2-λWPZC-254-1/4-λ
Standard Wavelength:266nm,355nm,532nm,632.8nm,780nm,808nm,850nm,980nm,1064nm,1310nm,1480nm,1550nm

 

Cemented True Zero-order Waveplates

The true zero-order waveplate means that thickness of waveplate is very thin (less than 0.1mm) which make the true-zero-order waveplate ecellent in temperature, wavelength and incident angle (about 20º) bandwidth.Therefore, it is excellent choice for the highly accurate application. It is cemented with a block of glass which is limited to low and medium power application.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/500@632.9nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

 Standard Products

Half WaveplateQuarter Waveplate
WPCT-100-1/2-λWPCT-100-1/4-λ
WPCT-127-1/2-λWPCT-127-1/4-λ
WPCT-150-1/2-λWPCT-150-1/4-λ
WPCT-200-1/2-λWPCT-200-1/4-λ
WPCT-254-1/2-λWPCT-254-1/4-λ
Standard Wavelength: 532nm,632.8nm,780nm,808nm,850nm,980nm,1064nm,1310nm,1480nm,1550nm

 

Single Plate True Zero-order Waveplates

In order to enable the waveplate suit for high damage threshold (more than 1GW/cm2) application, Toptec provides a single plate of true zero-order waveplate.The thickness of this waveplate means handling can be difficult, we can provide mounts upon request.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/500@632.9nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

 Standard Products

True Zero-order Waveplates
Half WaveplateQuarter Waveplate
WPT-100-1/2-λWPT-100-1/4-λ
WPT-127-1/2-λWPT-127-1/4-λ
WPT-150-1/2-λWPT-150-1/4-λ
WPT-200-1/2-λWPT-200-1/4-λ
WPT-254-1/2-λWPT-254-1/4-λ
Standard Wavelength λ/4: 1310nm,1480nm,1550nm
Standard Wavelength λ/2: 980nm,1064nm,1310nm,1480nm,1550nm

 

Achromatic Waveplates

In order to enable the waveplate suit for high damage threshold (more than 1GW/cm2) application, Toptec provides a single plate of true zero-order waveplate.The thickness of this waveplate means handling can be difficult, we can provide mounts upon request.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/100@700-1000nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec
CoatingR<0.15% at Center Wavelength

 Standard Products

Half Achronatic WaveplateQuarter Achromatic Waveplate
WPAO-127-1/2-λWPAO-127-1/4-λ
WPAO-150-1/2-λWPAO-150-1/4-λ
WPAO-200-1/2-λWPAO-200-1/4-λ
WPAO-254-1/2-λWPAO-254-1/4-λ

 

Dual Wavelength Waveplates

Dual Wavelength Waveplate is THG-PR polarization ratator and used to manage the polarizaton of laser beam maximum conversion efficiency of third harmaonic generation(THG),In fact, it is a low order or multi-order waveplate,but which are suitable for two different wavelengths with different retardations. The dual wavelength waveplate is often applied in laser harmornic generation.

Specifications
MaterialCrystal Quartz
Dimension Tolerance+0.0, -0.1mm
Wavefront Distortionλ/10@632.8nm
Retardation Toleranceλ/500@632.8nm
Wavelength Range240-2100nm
Surface Quality20-10 S/D
Parallelism3 arc sec

Coating

R<0.2% at fundermental Wavelength

and R<0.5% at SHG  Wavelength

 

UV-IR Optics
MgF2

MgF2 is a birefrigent material crystal with excellent physical and chemical properties. It provides wide transparent range, high transmissibility. MgF2 is a rugged material resistant to chemical etching, mechanical, and thermal shock. High vacuum UV transmission and resistance to laser damage make MgF2 a popular choice for VUV and excimer laser windows, polarizers, and lenses.

Main Properties of MgF2

Lattice constanta=4.621A; c=3.053A
Melting Point1255℃
Density3.17g/cm3 (at 291K)
Mohs hardness6
Thermal conductivity0.3 Wm-1K-1
Expansion coefficientaa=13.7x10-6/K; ac=8.48x10-6/K
Elastic CoefficientsC11=140.2 C12=89.5 C44=56.8
Transparence range0.11-7.5µm
Refraction Index@405nm no=1.3836, ne=1.3957

Specification of MgF2 Window

Diameter Tolerance+0.0/-0.1mm
Thickness Tolerance+/-0.1mm
Flatnessλ/4 at 632.8nm
Surface Quality40-20
Parallelism<3 arc min
Clear Aperture >90%

 

CaF2

Calcium Fluoride (CaF2) is a crystal which has good transmission from 170nm to 7800nm. It is slightly soluble in water and is susceptible to thermal shock. Common uses of CaF2 include IR components such as windows, lenses and Prisms.

Main Properties of CaF2

Melting Point1360℃
Density3.18g/cm3 (at 291K)
Mohs hardness4
Thermal conductivity9.71 Wm-1K-1
Expansion coefficient18.85x10-6/K
Elastic CoefficientsC11=164 C12=53 C44=33.7
Transparence range0.13-10µm
Refraction Indexn=1.6921-1.3161

Specification of CaF2 Window 

Diameter Tolerance+0.0/-0.1mm
Thickness Tolerance+/-0.1mm
Flatnessλ/4 at 632.8nm
Surface Quality40-20
Parallelism<3 arc min
Clear Aperture >90%

 

Si

Silicon (Si) is commonly used as a substrate material for infrared reflectors and windows in the 1.5μ m-8μm region. The strong absorption band at 9μm makes it unsuitable for CO2 laser transmission applications but it is frequently used for laser mirrors because of its high thermal conductivity and low density. Silicon is also a useful transmitter in 20μm range.
    Silicon is the most abundant electropositive element in the Earth’s crust. It’s a metalloid with a marked metallic luster and very brittle. It is usually tetravalent in its compounds, although sometimes they are bivalent and purely electropositive in its chemical behavior. Moreover, pentacoordinated and hexacoordinated silicon compounds are also known.
    Silicon lenses are popular for many applications in the IR. They are typically used for imaging applications in the 3-5μm region of the spectrum, making them excellent for security and military applications. They can also be used to collimate infrared lasers. These lenses are coated with a BBAR coating that provides 98% transmission in the 3-5μm spectral range.

Main Properties of Si

Material TypeCZ FZ,N or P
Crystal Direction[100],[111]
Resistivity0.003-50 Ohm/cm
Melting Point1410℃
Density2.33g/cm3
Knoop Hardness1150kg/mm2
Thermal Conductivity163.3 J/k.m.s@273K
Transmittance Range1um-10um,30um-300um
Refraction Index3.4179@10µm

Specification of Si Window & Mirror

Diameter Tolerance+0.0/-0.1mm
Thickness Tolerance+/-0.1mm
Flatnessλ/8 at 632.8nm
Surface Quality40-20
Parallelism<3 arc min
Clear Aperture >90%
CoatingAR or HR coating

 

Ge

Germanium (Ge) is used widely for lenses and windows in thermal imaging and FLIR applications. Its high index of refraction makes it of particular interest. Useful transmission range of Germanium windows is from 2 to 12μm.Germanium is opaque in the visible.
    Germanium has the property of thermal runaway, meaning that the transmission decreases as temperature increases. As such, Ge window should be used at temperatures below 100°C. The higher Knoop Hardness of Germanium (780) makes it ideal for IR applications requiring rugged optics. Germanium’s high density (5.33/cm 3) should be considered when designing for weight-sensitive systems.

Main Properties of Ge

Material TypeN or P
Resistivity4-50 Ohm/cm
Density5.33g/cm3
Knoop Hardness780kg/mm2
Thermal Expansion Coefficient5.5x10-6/K
Transmittance Range2µm-4µm
Refraction Index4.003@10µm

Specification of Ge Lens 

Diameter Tolerance+0.0/-0.1mm
Thickness Tolerance+/-0.1mm
Flatnessλ/4 at 632.8nm
Surface Quality40-20
Parallelism<3 arc min
Clear Aperture >90%
Coating AR or BBAR coating

 

ZnSe

ZnSe is used for optical windows, lenses, mirrors, prisms and optical blanks, plates, disks, sheets, slabs particularly for infrared applications Zinc Selenide (ZnSe) — transparent in wide spectral range from yellow (visible) to far IR. ZnSe material is a chemically inert, non-hygroscopic and highly pure product that is very effective in many optical applications due to its extremely low bulk losses, high resistance to thermal shock and stability in virtually all environments, easily machined. To obtain superior transmittance, ZnSe crystals are grown by Chemical Vapor Deposition process (CVD). Zinc Selenide CVD is polycrystalline material, demonstrates superior CO2 laser transmittance and is employed in the transmission optical components used in CO2 laser processing. ZnSe (Zinc Selenide) Chemical Vapor Deposition (CVD) material is produced by synthesis from zinc vapour and H2Se gas, forming as sheets on graphite susceptors (ZnSe-CVD processes). Chemical purity of CVD-ZnSe 99.999%. It has à polycrystalline structure; the grain size of Zinc Selenide CVD material is controlled to produce maximum strength. The transmission range of Zinc Selenide ZnSe-CVD is (0.5 – 20) microns. ZnSe CVD used for high power CO2 laser optics at 10.6 microns, for protective optics windows or optical elements in FLIR (forward looking infrared) thermal imaging equipment, optics for medical and industrial applications (optical plane parallel windows (plates, disks, sheets, slabs, blanks), wedged windows, Brewster windows, optical meniscus, spherical and cylindrical lenses, prisms, resonator mirrors of CO2 laser). Single crystal ZnSe Zinc Selenide is available, but is not common, it has lower bulk losses and thus more effective for CO2 optics.

Main Properties of ZnSe(CVD)

Density5.27 g/cm3
Melting Point1525℃
Thermal Conductivity18 W/(m K)@298K
Thermal Expansion7.1 x 10-6/℃ at 273K
Hardness339 J/(kg K)
Transmission Range0.6-21.0µm
Refractive Index2.4028@10µm

Specification of ZnSe Lens 

Design Wavelength10.6µm
Focal Length Tolerance+/-1%
Diameter Tolerance+0.0/-0.1mm
Thickness Tolerance+/-0.1mm
Flatnessλ/4 at 632.8nm
Surface Quality40-20
Centration<3 arc min
Clear Aperture >90%
CoatingAR@10.6µm or BBAR@8-14µm

 

NLO Crystals
KTP

KTP crystal is the most commonly used for SHG (Frequency doubling) of Nd-doped laser for green/red output. It is widely used in both commercial and military lasers including laboratory and medical systems, rang-finders, lidar, optical communication and industrial systems.

Advantages

Large nonlinear optical coefficient

High electro-optic coefficient and low dielectric constant

High thermal conductivity

Moisture free,chemically and mechanically stable

Large figure of merit

Chemical and Structural Properties

Orthorhombic, Space group Pna21, Point group mm2
a=6.404Å, b=10.616Å, c=12.814Å, Z=8
1172ºC incongruent
~5
3.01g/cm3
0.13W/cm/K
αx=11x10-6/K, αy=9x10-6/K, αz=0.6x10-6/K

Optical and nonlinear optical properties 

Transparency Range350-4500nm
SHG Phase Matchabel Range497~1800nm (TypeII)
Therm-optic Coefficients(/ºC)dnx/dT=-1.1x10-5,dny/dT=-1.3x10-5,dnz/dT=1.6x10-5
Absorption Coefficients<0.1%/cm at 1064nm, <1%/cm at 532nm

For Type II SHG of a Nd:YAG Laser at 1064nm

Temperature Acceptance:24ºC-cm

Spectral Acceptance:0.56nm-cm

Angular Acceptance:14.2mrad-cm(φ);55.3mrad-cm(θ)

Walk-off Angle:0.55°

NLO Coefficientsdeff(II)≈(d24-d15)sin2 φsin2θ-(d15sin2φ+d24cos2 φ)sinθ

Non-vanished NLO Susceptibilities

d31=6.5pm/V, d24=-7.6pm/V, d32=5pm/V

d15=6.1pm/V, d33=13.7pm/V

 

Sellmeier Equations(λ in μm)

nx2=3.0065+0.03901/(λ2-0.04251)-0.01327λ2

ny2=3.0333+0.04154/(λ2-0.04547)-0.01408λ2

nz2=3.3134+0.05694/(λ2-0.05658)-0.01682λ2

 Specifications of KTP Slabs

Dimension ToleranceWxH:±0.1mm, L≤2.5mm:±0.1mm, L>2.5mm:+0.5/-0.1mm 
Flatness<λ/10@632.8nm
Wavefront Distortion<λ/8@632.8nm
Surface Quality10/5 S/D
Paralellism≤10''
Perpendicularity≤5'
Angle Tolerance≤0.25°
Damage Threshold>500MW/cm ² for 1064nm, >300MW/cm ² for 532nm

 

KDP & KD*P

KDP and KD*P are among the most widely-used commercial NLO materials, characterized by good UV transmission, high damage threshold, and high birefringence. They are usually used for doubling, tripling and quadrupling of a Nd:YAG laser at the room temperature. In addition, they are also excellent electro-optic crystals with high electro-optic coefficients, widely used as electro-optical modulators, such as Q-switches, Pockels Cells, etc.

Applications

Second,third,and fourth harmonic generation of Nd:lasers
      Frequency doubling of dyer laser
      High power laser frequency conversion materials
      Shutter for high speed photography
      Electro-optical modulator and Q switches

Basic PropertiesKDPKD*P
Chemical FormulaKH2PO4KD2PO4
Transparency Range200-1500nm200-1600nm
NLO Coefficientsd36=0.44pm/Vd36=0.40pm/V
Refractive Index (at 1064nm)no=1.4938, ne=1.4599no=1.4938, ne=1.4599
Electro-optical Coefficientsr41=0.88pm/V, r63=10.3pm/Vr41=8.8pm/V, r63=25pm/V
Longgitudinal Half-wave VoltageVπ=7.65KV (λ=546nm)Vπ=2.98KV (λ=546nm)
Absorptance0.07/cm0.006/cm
Optical Damage Threshold>5 GW/cm2>3 GW/cm2
Extinction Ratio:30 dB
Sellmeier Equations of KDP (λ in μm)
n02=2.259276+0.01008956/(λ2-0.012942625)+13.00522λ2/(λ2-400)
ne2=2.132668+0.008637494/(λ2-0.012281043)+3.2279924λ2/(λ2-400)
Sellmeier Equations of KD*P (λ in μm)
n02=1.9575544+0.2901391λ2/(λ2-0.0281399)-0.02824391λ2+0.004977826λ4
n02=1.5005779+0.6276034λ2/(λ2-0.0131558)-0.01054063λ2+0.002243821λ4

 Specifications of KDP & KD*P slabs

Dimension ToleranceWxH:±0.1mm, L≤2.5mm:±0.1mm, L>2.5mm:+0.5/-0.1mm  
Flatness<λ/10@632.8nm
Wavefront Distortion<λ/8@632.8nm
Surface Quality10/5 S/D
Paralellism≤10''
Perpendicularity≤5'
Angle Tolerance≤0.25°

 

BBO

BBO crystal combines very wide transparency, moderately high nonlinear coupling, high damage threshold and good chemical and mechanical properties. BBO phase match covers a wide range, yielding SHG from 190nm to 1780nm.

Advantages
     Broad phase-matching range from 409.6nm to 3500nm
     Wide transmission region from 190nm to 3500nm
     Large effective second-harmonic-generation(SHG) coefficient
     High damage threshold
     High optical homogeneity with dn≈10-6/cm
     Wide temperature-bandwidth of about 55℃

Chemical and Structural Properties

Crystal structureTrigonal, Space group R3c
Lattice Parametersa=b=12.532Å, c=12.717Å, c=12.814Å, Z=6
Melting point:About 1095ºC
Mohs hasrdess4
Density3.85g/cm3
Thermal Conductivity1.2W/cm/K(⊥c), 1.6W/m/K(∥c)
Electrical Expansion Coefficientsα11=4x10-6/K, α33=36x10-6/K

Optical and Nonlinear Optical Properties 

Transparency Range190-3500nm
SHG Phase Matchabel Range409.6-3500nm (Type I), 525-3500nm (Type I)
Therm-optic Coefficients (/ºC)dno/dT=-16.6x10-6, dne/dT=-9.3x10-6
Absorption Coefficient<0.1%/cm at 1064nm, <1%/cm at 532nm

Angel Acceptance

0.8mrad-cm (θ,Type I,1064 SHG)

1.27mrad-cm (θ,Type II,1064 SHG)

Temperature Acceptance55ºC-cm
Spectral Acceptance1.1nm-cm
Walk-off Angle2.7°(Type I,1064 SHG), 3.2°(Type II,1064 SHG)

NLO Coefficients

deff(I)=d31sinθ+(d11cos3Φ-d22sin3Φ)cosθ

deff(II)=(d11sin3Φ+d22cos3Φ)cos2θ

Non-vanished NLO Susceptibilitiesd11=5.8xd36(KDP), d31=0.05xd11, d22<0.05xd11
Sellmeier Equations (λ in μm)

no2=2.7359+0.01878/(λ2-0.01822)-0.01354λ2

ne2=2.3753+0.01224/(λ2-0.01667)-0.011516λ2

Electro-optic Coefficients γ22=2.7pm/V

Specifications of BBO slabs

Dimension ToleranceWxH:±0.1mm, L≤2.5mm:±0.1mm, L>2.5mm:+0.5/-0.1mm  
Flatness<λ/10@632.8nm
Wavefront Distortion<λ/8@632.8nm
Surface Quality10/5 S/D
Paralellism≤10''
Perpendicularity≤5'
Angle Tolerance≤0.25°
Damage Threshold>500MW/cm ² for 1064nm, >300MW/cm ² for 532nm

 

LBO

LBO crystal is an excellent nonlinear optical crystal. For frequency doubling (SHG), tripling (THG) of Nd:YAG,, Nd:YLF, Nd:YVO4 lasers, it is one of the most useful nonlinear optical materials in ultraviolet and visible laser applications. 

Advantages
    Broad transparency range from 160nm to 2600nm(SHG rangefrom 550nm to 2600nm)
    Relatively large effective SHG coefficient(about three times that of KDP)
    High damage threshold(18.9GW/cm2 for a 1.3ns laser at 1064nm)
    TypeⅠand type Ⅱ non-critical phase-matching(NCPM) over a wide wavelength range
    Spectral NCPM near 1300nm

Chemical and Structural Properties



Crystal structureOrthorhombic, Space group Pna21, Point group mm2
Lattice Parametera=8.4473Å, b=7.3788Å, c=5.1395Å, Z=2
Melting point:About 834ºC
Mohs hasrdess6
Density2.47g/cm3
Thermal Conductivity3.5W/m/K
Thermal Expansion Coefficientαx=10.8x10-5/K, αy=8.8x10-5/K, αz=3.4x10-5/K

 Optical and Nonlinear Optical Properties

Transparency Range160-2600nm
SHG Phase Matchabel Range551~2600nm (Type I), 790~2150nm(Type II)
Therm-optic Coefficient(ºC)dnx/dT=-9.3x10-6, dny/dT=-13.6x10-6, dnz/dT=(-6.3-2.1λ)x10-6
Absorption Coefficient<0.1%/cm at 1064nm, <0.3%/cm at 532nm

Angel Acceptance

6.54mrad-cm (Φ,Type I,1064 SHG)

15.27mrad-cm (θ,Type II,1064 SHG)
Temperature Acceptance4.7ºC-cm(Type I,1064SHG), 7.5ºC-cm(Type II,1064 SHG)
Spectral Acceptance1.0nm-cm(Type I,1064SHG), 1.3nm-cm(Type II,1064 SHG)
Walk-off Angle0.6°(Type I,1064 SHG), 1.2°(Type II,1064 SHG)

NLO Coefficients

deff(I)=d32cosΦ (Type I in XY plane)

deff(I)=d31cos2 θ+d32sin2θ (Type I in XZ plane)
deff(II)=d31cos θ (Type II in YZ plane)
deff(II)=d31cos2θ+d32sin2θ (Type II in XZ plane)
Non-vanished NLOd31=1.05±0.09pm/V,d32=-0.98±0.09pm/V,d33=0.05±0.006pm/V
Susceptibilities
Sellmeier Equations (λ in μm)nx2=2.454140+0.011249/(λ2-0.011350)-0.014591 λ2-6.60x10-5λ4
ny2=2.539070+0.012711/(λ2-0.012523)-0.018540 λ2-2.0x10-4λ4
nz2=2.586179+0.013099/(λ2-0.011893)-0.017968 λ2-2.26x10-4λ4

Specifications of LBO slabs

Dimension ToleranceWxH:±0.1mm, L≤2.5mm:±0.1mm, L>2.5mm:+0.5/-0.1mm  
Flatness<λ/10@632.8nm
Wavefront Distortion<λ/8@632.8nm
Surface Quality10/5 S/D
Paralellism≤10''
Perpendicularity≤5'
Angle Tolerance≤0.25°
Damage Threshold>500MW/cm ² for 1064nm, >300MW/cm ² for 532nm
Birefringent Crystals
YVO4

The Yttrium Orthovanadate (YVO4) is a positive uniaxial crystal grown with Czochralski method. It has good mechanical and physical properties and is ideal for optical polarizing components because of its wide transparency range and large birefringence. It is an excellent synthetic substitute for Calcite (CaCO3) and Rutile (TiO2) crystals in many applications including fiber optic isolators and circulators, beam displacers, Glan polarizers and other polarizing optics, etc.

Main properties of YVO4 crystal

Crystal SymmetryZircon Tetragonal, Space Group D4h
Transmittance Range400-5000nm
Crystal Cella=b=7.12Å, c=6.29Å
Density4.22g/cm3
Mohs Hardness5
Hygroscopic SusceptibilityNone
Thermal Expansion Coefficientαa=4.43×10-6/K αc=11.37×10-6/K

Themal Optical Coefficient

∥c:5.23 W/m/K, ⊥c:5.10 W/m/K

dna/dT=8.5x10-6/K
Refractive Indices, Birefringence (Δn=ne-no) and Walk-off Angle at 45°(ρ)n0=1.9500 ne=2.1554 Δn=0.2054 ρ=5.72°@1300nm
n0=1.9447 ne=2.1486 Δn=0.2039 ρ=5.69° @1550nm
Sellmeier Equations (λ in μm)no2=3.77834+0.069736/(λ2-0.04724)-0.0108133λ2
ne2=4.59905+0.110534/(λ2-0.04813)-0.0122676λ2

Specifications of YVO4 Beam displacers 

Dimensional TolerancesW(±0.05mm)xH(±0.05mm)xL(±0.1mm)
Flatness<λ/10@632.8nm
Wavefront Distortion<λ/8@632.8nm
Parallelism≤10"
Perpendicularity≤5"
Surface Quality10-5 S/D
Acurracy of Oriention≤0.5°
AR-coatingR<0.2%@1550+/-40nm or 1310+/-40nm

 

Calcite

Calcite is a negative uniaxial crystal that has high birefringence, wide spectral transmission and availability in reasonably sized rhombs. Although a fairly soft crystal and easily scratched, Calcite is an ideal material for use as visible wavelengths and near IR polarizers such as Glan Taylor, Glan Thompson and Glan Laser.

Main Properties of Calcite Crystal

Transmittance Range350-2300nm
Density2.7g/cm3
Mohs Hardness3
Hygroscopic SusceptibilityLow
Thermal Expansion Coefficientαa=24.39×10-6/K αc=5.68×10-6/K
Crystal ClassNegative uniaxial with no=na=nb, ne=nc

Refractive Indices, Birefringence (Δn=ne-no)

and Walk-off Angle at 45°(ρ)

n0=1.6629 ne=1.4885 Δn=-0.1744 ρ=6.32° @630nm
n0=1.6557 ne=1.4852 Δn=-0.1705 ρ=6.20° @1300nm

Sellmeier Equations (λ in μm)

no2=2.69705+0.0192064/(λ2-0.001829)-0.0151624λ2
ne2=218438+0.0087309/(λ2-0.01018)-0.0024411λ2

Specifications of Polarizers 

Dimensional Tolerances+/-0.1mm
Flatness<λ/4@632.8nm
Surface Quality10-5 S/D
Acurracy of Oriention≤0.5°
Beam Deviation<3'
AR-coatingSingle MgF2


a-BBO

High temperature form of BBO (α-BaB2O4) is a negative uniaxial crystal. It has large birefringence over a broad transparent range of 190nm to 3500nm. The physical, chemical, thermal and optical properties of α-BBO are similar to those of β-BBO. However, the nonlinear optical properties of a-BBO crystals are nonexistent due to the centric symmetry with its crystal structure. α-BBO crystal is not recommended for NLO processes.

Main Properties of Calcite Crystal

Transmittance Range190-3500nm
Density3.85g/cm³
Mohs Hardness4.5
Hygroscopic SusceptibilityLow
Thermal Expansion Coefficientαa=4×10-6/K αc=36×10-6/K
Optical HomogeneityΔn=10-6/cm
Linear Absorbtion Coefficient0.05%/cm-1@300-2300nm


Themal Optical Coefficient

dno/dT=-9.3x10-6/K
dne/dT=-16.6x10-6/K
Damage Threshold1 GW/cm2 @1064nm, 500 MW/cm2 @532nm
Refractive Indices, Birefringence (Δn=ne-no) and Walk-off Angle at 45°(ρ)no=1.7617 ne=1.6719 Δn=-0.0898 ρ=-5.6926° @266nm
no=1.6776 ne=1.6021 Δn=-0.0755 ρ=-5.0407° @532nm
no=1.6579 ne=1.5846 Δn=-0.0733 ρ=-4.953° @1064nm

Specifications of YVO4, α-BBO and Calcite Polarizers

LiNbo3

LiNbO3 (LN) crystal is widely used as frequency doublers for wavelength greater than 1000µm and optical parametric oscillators (OPOs) pumped at 1064 nm and quasi-phase-matched (QPM) devices. Due to its unique electro-optical, photoelastic, piezoelectric and non-linear properties, Lithium Niobate is widely used in a variety of integrated and active acousto-optical devices. The material is Czochralsky grown and poled along Z-axis.

Main Properties of LN Crystal

Crystal StructureTrigonal, Space Group R3c, Point group 3m
Transmittance Range420-5200nm
Absorption Coefficient~0.1%/cm at 1064nm
Melting Point1253ºC
Density4.64g/cm3
Mohs Hardness5
Hygroscopic SusceptibilityNone
Thermal Conductivity Coefficient38 W/m/K at 25ºC
Thermal Expansion Coefficient (at 25ºC)∥a:2.0×10-6/K, ∥c:2.2×10-6/K
Themal Optical Coefficientdno/dT=-0.874x10-6/K at 1.4μm
dne/dT=39.073x10-6/K at 1.4μm
Refractive Indicesn0=2.232 ne=2.156 @1064nm
n0=2.220 ne=2.146 @1300nm
Sellmeier Equations (λ in μm)no2=4.9048+0.11768/(λ2-0.004750)-0.027169λ2
ne2=4.5820+0.099169/(λ2-0.04443)-0.021950λ2

Specifications of LN Wedges 

Dimensional Tolerances+/-0.05mm
Flatness<λ/10@632.8nm
Parallelism≤10"
Perpendicularity≤5"
Surface Quality10-5 S/D
Acurracy of Oriention≤0.5°
Wedge Angle Tolerances+/-0.1°
AR-coatingR<0.2%@1550+/-40nm

Laser Crystals
Nd:YVO4

Nd:YVO4 crystal is one of the most excellent laser host materials, it is suitable for diode laser-pumped solid state laser. Compactly designed Nd3+ :YVO4 lasers with green, red and blue light output are really perfect means for material processing. Nd3+ :YVO4 diode pumped lasers have: wide absorption bandwidth, low lasing threshold, high slope efficiency, large luminescent cross-section, linearly polarized emission and single-mode output.

Advantages
     Lower lasing threshold and higher slope efficiency
     Low dependency on pumping wavelength and tend to single mode output
     Large stimulated emission cross-section at lasing wavelength
     High absorption over a wide pumping wavelength bandwidth
     Optically uniaxial and large birefringence emit strongly-polarized laser

Main Types of Diffusion Bonded Crystals

Crystal StructureZircon Tetragonal, Space Group D4h
Lattice Parametersa=b=7.12Å, c=6.29Å
Dopant Level0.1~3.0 atm%
Density4.22g/cm3
Mohs Hardness4.6~5, Glass-like
Refractive Indicesno=1.9573, ne=2.1652 @1064nm
Thermal Expansion Coefficientαa=4.43×10-6/K, αc=11.37×10-6/K
Thermal Conductivity Coefficient∥c:5.23W/m/K, ⊥c:5.10W/m/K  
Lasing Wavelengths914nm, 1064nm, 1324nm
Thermal Optical Coefficientdno/dT=8.5×10-6/K, dne/dT=3.0×10-6/K
Stimulated Emission Cross-section25.0×10-19cm2 @1064nm
Fluorescent Lifetime90μs @808nm
Absorption Coefficient31.4cm-1 @808nm
Absorption Length0.32mm @808nm
Instrinsic LossLess 0.1%cm-1@1064nm
Gain Bandwidth0.96nm (257GHz) @1064nm
Polarized Laser Emissionπ polarization, Parallel to optic axis
Diode Pumped Optical to Optical Efficiency>60%

Specifications of Nd:YVO4

Flatness<λ/10@632.8nm
Parallelism≤10"
Perpendicularity≤5"
Surface Quality10-5 S/D

Dimensional Tolerance

Rod: Dia+/-0.1mm, L+/-0.25mm
Slab: +/-0.1mm
CoatingUpon request 
Damage Threshold≥1GW/cm ²

 

Nd:YAG

Nd:YAG crystal is the most early and mature laser material adopted by R&D, medical, industrial and military customers. It is the ubiquitous presence for near-infrared solid-state lasers and their frequency-doubler, tripler, and higher order multiplier.

Advantages

High Gain,High Efficiency,Low Threshold

High Optical Quality and low Loss at 1064nm

Good Mechanical and Thermal Properties

Easy to operate with TEM00 mode(Q-Switch,pulsed,CW)

Main Properties of Nd:YAG Crystal

Chemical FormulaNd:Y3Al5O12
Crystal StructureCubic Garnet
Dopant Level0.6~1.3 atm%
Melting Point1970ºC
Density4.56 g/cm3
Mohs Hardness8.5
Refractive Index1.82@1064nm
Thermal Expansion Coefficient7.8x10-6/K [111], 0-250ºC
Thermal Conductivity14W/m/K @20ºC, 10.5W/m/K @100ºC
Loss Coefficient0.003cm-1@1064nm
Lasing Wavelength1064nm
Pump Wavelength807.5nm
Refraction Time of Terminal Lasing Level30ns
Radiative Lifetime550µs
Fluorescence Lifetime230µs
Effective Emission Cross Section2.8x10-19cm2
Polarized EmissionUnpolarized
Thermal BirefringenceHigh

Specifications of Nd:YAG

Flatness<λ/10@632.8nm
Paralellism≤10''
Perpendicularity≤5'
Surface Quality10-5 S/D
Optical QualityInterference fringes<0.125/inch
Extinction ration Ø3~Ø6.35>28dB, Ø7~ Ø10>25dB
Dimensional ToleranceRod: Dia+/-0.1mm, L+/-0.25mm
Slab: +/-0.1mm
AR-coating R<0.2%(@1064nm)
HR-Coating ReflectivityR>99.8%@1064nm and T>95%@808nm
Other HR CoatingsHR@1064/532nm, HR@946nm, HR@1319nm
and other wavelengths are also available
Damage Threshold≥500MW/cm ²

 

Cr:YAG

Cr4+ :YAG Crystal is an excellent crystal for passively Q-switching diode pumped or lamp-pumped Nd:YAG , Nd:YLF, Nd:YVO4 or other Nd and Yb doped lasers at wavelength from 0.8 to 1.2µm. Passive Q-switches or saturable absorbers provide high power laser pulses without electro-optic Q-switches, thereby reducing the package size and eliminating a high voltage power supply. Cr4+ :YAG is more robust than dyes or color centers and is the material of choice for 1 um Nd lasers.

Main Properties of Cr4+:YAG Crystal

Chemical FormulaCr4+:Y3Al5O12
Crystal StructureCubic Garnet
Dopant Level0.5~3 atm%
Mohs Hardness8.5
Melting Point1970ºC
Density4.55 g/cm3
Refractive Index1.82@1064nm
Themal Expansion Coefficient8.2x10-6/K[100], 7.7x10-6/K[110]
Thermal Conductivity12.13 W/m/K @25ºC
Fluorescence Lifetime3.4µs
Base State Absorption Cross Section4.3x10-18cm2
Emission State Absorption Cross Section8.2x10-19cm2

Specifications of Cr4+:YAG

Flatness<λ/10
Parallelism≤10"
Perpendicularity≤5´
Surface Quality20-10 S/D
Initial Transmittance1%~98%
Dimensional TolerancesRod: Dia+/-0.1mm, L+/-0.25mm
Slab: +/-0.1mm
CoatingUpon request 
Damage Threshold≥500 MW/cm²

 

Diffusion Bonded Crystals

Diffusion Bonded Crystals are crystals consisting of two, three or more parts with different dopant levels. Usually, doped and undoped materials are used. Difussion Bonded Crystals are used to decrease thermal lensing effect considerably. This bonding technology in laser applications can not only greatly improve the laser performance and beam quality, but also conducive to the intergration of laser systems and access to large-size crystal.

Advantages
     Decrease thermal effect
     Improve efficiency
     High damage threshold
     Improve beam quality
     Compact size

Main Types of Diffusion Bonded Crystals

MaterialDoping ConcentrationAperture(mm2)Length(mm)
YAG+Nd:YAG0.6~1.3%2x2-20x202-200
YAG+Cr4+:YAG0.5~3%2x2-20x202-50
Nd:YAG+Cr4+:YAG0.6~1.3%/0.5~3%2x2-20x202-200
YAG+Nd:YAG+YAG0.6~1.3%2x2-20x203-200
YAG+Nd:YAG+Cr4+:YAG0.6~1.3%/0.5~3%2x2-20x203-200
YAG+Nd:YAG+Cr4+:YAG+YAG0.6~1.3%/0.5~3%2x2-20x205-200
YVO4+Nd:YVO4+YVO40.1~3%2x2-10x101-20
YVO4+Nd:YVO4+YVO40.1~3%Φ2-103-20

Specifications of Nd:YVO4+YVO4

Flatness<λ/10
Parallelism≤20"
Perpendicularity≤15´
Surface quality20-10 S/D
Dimensional tolerances+/-0.1mm
CoatingUpon request

Specifications of Nd:YAG+YAG+Cr:YAG

Flatness<λ/10
Parallelism≤10"
Perpendicularity≤10´
Surface quality20-10 S/D
Dimensional tolerances+/-0.1mm
Coating Upon request

Specifications of Diffusion Bonded Crystals

Flatness<λ/10
Parallelism≤10"
Perpendicularity≤5´
Surface quality20-10 S/D
Dimensional tolerances+/-0.1mm
Coating AR or HR Coating
Green Laser Kits
DPM Crystals

Diode-pumped Solid State (DPSS) lasers are the ideal laser tools for applications such as pointing light shows, machining, material processing, spectroscopy, wafer inspection and medical diagnostics. Toptec’s Diode-Pump Microchip (DPM) crystal assemblies combine Nd:YVO4 and KTP and act as the laser core for green DPSS lasers. Applications for DPMs include green laser pointers, laser displays, DPSS green lasers and surveying laser systems.

SpecificationsCommercialHigh Precision
Flatness<λ/10<λ/10
Parallelism≤10"≤5"
Perpendicularity≤5´≤5´
Surface quality20-10 S/D20-10 S/D
Dimensional tolerances+/-0.1mm+/-0.05mm
Pump Power300 mW500 mW
Output Power>25 mW at 532nm>50 mW at 532nm

 

Coatings
Coatings

 

 

 

 

 

 

Other coatings are available upon request

Toptec Optics, Inc.

Tel:+86-591-8347 7500

Fax:+86-591-8347 7600

Email:sales@toptecoptics.com

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