ALKOR Technologies - your CRYSTAL optics supplier.   ALKOR Technologies - your CRYSTAL optics supplier.
ALKOR Technologies - your CRYSTAL optics supplier.
Products >> ZnSe lenses and windows

ZINC SELENIDE: ZnSe windows, wedges and ZnSe lenses

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 m.

For the best perfomance of ZnSe windows we offer several type of AR coatings for 10.6, 2-13 or 8-12m. 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.

ZnSe windows

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.

ZnSe Transmision

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.

AR coated ZnSe windows

Transmission of AR coated @2-13 microns ZnSe window

ZnSe prisms, ZnSe IR optics

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

m No m No m 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