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Alkor Technologies - manufacturer of ZnSe windows, ZnSe lenses, ZnSe ATR prisms. We produce custom Zinc Selenide optics according to customer demands.
ZnSe windows catalog
ZnSe wedges catalog
ZnSe plano-convex lenses catalog
ZnSe meniscus lenses catalog
ZnSe ATR prisms
CVD ZnSe used in windows and lenses for spectroscopy and high power laser optics, industrial applications. We offer ZnSe windows, ZnSe wedges, ZnSe lenses, ZnSe hemicylindrical lenses, ZnSe ATR prisms. The transmission range of Zinc Selenide (CVD ZnSe) is 0.5 - 20 µm. For the best perfomance of ZnSe windows we offer several type of AR coatings for 10.6, 2-13 or 8-12µm. See transmssion curve below or request our Sales for custom solution.
Please contact us us for quotation of your ZnSe windows or lenses. Our Sales Team will prepare an answer within 24 hours. If you do not see a suitable size in catalogue, write a request, we will make ZnSe windows according to your drawing at no additional cost. The largest dimensions of ZnSe optics - Diameter 80mm. Rectangular ZnSe windows are also available.
Zinc Selenide (ZnSe) - transparent in wide spectral range from 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.
Transmission of uncoated ZnSe window
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.
Transmission of AR coated @2-13 microns ZnSe window
Chemical purity of CVD-ZnSe 99.999%. The grain size of Zinc Selenide CVD material is controlled to produce maximum strength and machinability.
ZnSe properties |
| Chemical Formula |
ZnSe |
| Molecular Weight |
144.33 |
| Crystal Class |
Cubic, hexagonal |
| Crystal Structure |
Polycrystalline |
| Density, g/cm3 at 293 K |
5.27 |
| Melting Temperature, K |
1790 |
| Thermal Conductivity, W/(m K) at 300 K |
18 |
Thermal Expansion, 1/K
at 173 K
at 273 K
at 473 K |
5.6 x 10-6
7.1 x 10-6
8.3 x 10-6 |
| Specific Heat, cal/(g K) at 296 K |
0.081 |
| Debye Temperature, K |
246 |
| Bandgap, eV |
2.7 |
| Solubility in water at 298 K |
0.001 g/100 g H2O |
| Knoop Hardness, kg/mm2(100 g load) |
105 |
| Young's Modulus, GPa |
70 |
| Bulk Modulus, GPa |
40 |
| Poisson's Ratio |
0.28 |
ZnSe refractive index |
| µm |
No |
µm |
No |
µm |
No |
| 0.54 |
2.6754 |
0.58 |
2.6312 |
0.62 |
2.5994 |
| 0.66 |
2.5755 |
0.7 |
2.5568 |
0.74 |
2.5418 |
| 0.78 |
2.5295 |
0.82 |
2.5193 |
0.86 |
2.5107 |
| 0.90 |
2.5034 |
0.94 |
2.4971 |
0.98 |
2.4916 |
| 1.0 |
2.4892 |
1.4 |
2.4609 |
1.8 |
2.4496 |
| 2.2 |
2.4437 |
2.6 |
2.4401 |
3.0 |
2.4376 |
| 3.4 |
2.4356 |
3.8 |
2.4339 |
4.2 |
2.4324 |
| 4.6 |
2.4309 |
5.0 |
2.4295 |
5.4 |
2.4281 |
| 5.8 |
2.4266 |
6.2 |
2.4251 |
6.6 |
2.4235 |
| 7.0 |
2.4218 |
7.4 |
2.4201 |
7.8 |
2.4183 |
| 8.2 |
2.4163 |
8.6 |
2.4143 |
9.0 |
2.4122 |
| 9.4 |
2.4100 |
9.8 |
2.4077 |
10.2 |
2.4053 |
| 10.6 |
2.4028 |
11.0 |
2.4001 |
11.4 |
2.3974 |
| 11.8 |
2.3945 |
12.2 |
2.3915 |
12.6 |
2.3883 |
| 13.0 |
2.3850 |
13.4 |
2.3816 |
13.8 |
2.3781 |
| 14.2 |
2.3744 |
14.6 |
2.3705 |
15.0 |
2.3665 |
| 15.4 |
2.3623 |
15.8 |
2.3579 |
16.2 |
2.3534 |
| 16.6 |
2.3487 |
17.0 |
2.3438 |
17.4 |
2.3387 |
| 17.8 |
2.3333 |
18.2 |
2.3278 |
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