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Zinc Selenide( ZnSe) is used for optical windows, lenses,
mirrors and prisms particularly for infrared applications.
The transmission range is 0.5 ～ 22 μm. Used for
high power CO2-laser optics at 10.6 microns. Zinc
Selenide is produced by synthesis from zinc vapour
and H2Se gas, forming as sheets on graphite susceptors.
It is microcrystalline in structure, the grain size
being controlled to produce maximum strength.
| Main properties of CVD ZnSe |
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Transmissive wavelength |
0.5～22μm |
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Density |
5.27g/cm3 |
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Transmittance >65% (0.5～8μm) |
>70% (8～13μm) |
| Bending strength |
56MPa |
| Knoop hardness |
130 kg/mm2 |
| Refractive index |
2.403 (10.6 at μm) |
| Absorption coefficient |
0.0006/cm (10.6 at μm) |
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Thermal expansion coefficient |
7.1×10-6 (273K) |
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Laser Optex provide OEM service for industry and research on high quality ZnSe optics.
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High Precision |
Standard |
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Specifications |
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Diameter Tolerance |
+0.0/-0.1mm |
+0.0/-0.1mm |
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Thickness tolerance |
±0.05mm |
±0.2mm |
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Clear Aperture |
>85% |
>80% |
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Parallelism |
<30 seconds |
3' |
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Surface Quality |
10-5 scratch and dig |
80-50 scratch and dig |
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Wavefront Distortion |
λ/8 per 25mm at 632nm |
2λ per 25mm at 632nm |
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Bevel |
< 0.25mm×45º |
<0.25mm×45º |
Feature product
1.ZnSe prism ( ATR prism, AR coated)
2.AR Coating ZnSe Windows for high power CO2 laser
catalog and price list download (89K)
Part No. |
Dimension mm |
Price 1-5pcs , USD |
LZW122 |
Ø12.7×2 mm , AR10.6μm |
36.50 |
LZW202 |
Ø20.0×3 mm , AR10.6μm |
43 |
LZW252 |
Ø25.4×3 mm , AR10.6μm |
85 |
LZW323 |
Ø32.0×3 mm , AR10.6μm |
220 |
LZW385 |
Ø38.1×5 mm , AR10.6μm |
275 |
LZW506 |
Ø50.0×6 mm , AR10.6μm |
525 |
AR coating for ZnSe opics at 8-14μm.
3.BBAR Coated ZnSe window for FTIR spectroscopy ![]() ![]() ![]()
Part No. |
Dimension mm |
Price 1-5pcs , USD |
FTZE252 |
Ø25..4×2 mm , AR2.5-12μm |
125 |
FTZE323 |
Ø32.0×3 mm , AR2.5-12μm |
280 |
FTZE503 |
Ø50.0×3 mm , AR2.5-12μm |
375 |
BBAR coating for ZnSe optics at 3-12μ m.
IR grade ZnSe for FTIR catalog and price list download (107K)
4.Brewster window ![]() ![]() ![]() ![]() catalog and price list download (41K)
5.Focusing lenses ![]() ![]() ![]() ![]() catalog and price list download
6.ATR Hemisphere ![]() ![]() ![]() catalog and price list download (60K)
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