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融譜科技有限公司（主頁）：www.rhypex.com

融譜科技有限公司光學配件站：http://rhypex.1688.com/

融譜科技有限公司（產品站）:www.rhypex1688.cn

TEL：86-0519-86050157/18915071546

ZnSe is a preferred material for lenses, windows, output couplers and beam expanders for its low absorptivity at infrared 

wavelengths and its visible transmission. For high-power applications, it's critical that the material bulk absorption and 

internal defect structure be carefully controlled, that minimum-damage polishing technology be employed, and the highest 

quality optical thin-film coatings are used. The material absorption is verified by CO2 laser vacuum calorimetry. Our 

quality assurance department provides testing and specific optics certification on request. ZnSe optics are routinely 

polished from 5 to 300 mm in diameter. Sizes in 300 mm diameter and 25 mm thick are manufactured to customer requirements. 

ZnSe is non-hygroscopic and chemically stable, unless treated with strong acids. It's safe to use in most industrial, 

field, and laboratory environments.

Optical Properties

Bulk Absorption Coefficient @ 10.6µm：<= 0.0005 cm-1

Temperature Change of Refractive Index @ 10.6µm：61 x 10-6/°C

Refractive Index Inhomogeneity @ 632.8 nm：< 3 x 10-6

Thermal Properties

Thermal Conductivity @ 20° C：0.18 W/cm/°C

Specific Heat：0.356 J/g/°C

Linear Expansion Coefficient @ 20° C：7.57 x 10-6/°C

Mechanical Properties

Young’s Modulus：67.2 GPa (9.75 x 106 psi)

Rupture Modulus：55.1 MPa (8,000 psi)

Knoop Hardness：105-120 kg/mm2

Density：5.27 g/cm3

Poisson’s Ratio：0.28

Zinc Selenide (ZnSe) Prism Grade
We have the capability to grow prism grade ZnSe up to 2.50” thick. Prism grade ZnSe exhibits minimal refractive index
variations within the material on planes perpendicular to the growth direction as well as in other directions. Index
variations will test to less than 3 ppm at 0.6328 microns regardless of orientation. Prism grade ZnSe is commonly used in
thermal imaging systems. Call our technical sales staff to discuss your specific requirements for material greater than
2.50” thick.
Refractive index variation less than 3 ppm @0.6328µm in all directions
Consistent optical performance independent of orientation
Thickness to 2.50"

E-mail：[email protected]

TEL:86-0519-86050157

Http://www.rhypex.com