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ZnSe Window

What is

ZnSe Window

?

Zinc Selenide (ZnSe) is a crystal that can penetrate light in the infrared spectrum region from visible light to 20μm.

ZnSe Window

Zinc Selenide (ZnSe) is a crystal that can penetrate light in the infrared spectrum region from visible light to 20μm. ZnSe can be used for CO2 Laser (10.6um) window.

Ruike Optics manufactures ZnSe window, ZnSe lens and ZnSe prisms.

Crystallographic

Syngony

Cubic

Symmetry Class

43m

Lattice Constants

a = 5.668 Å

Optical

Refractive Index at ne

2.6645

Refractive Index at nF' - nC'

0.1841

Refractive Index at n10.6

2.4034

Refractive Index at n8.0 - n12.5

0.0285

Thermal Coefficient of Refractive Index at 3.39 microns

for ±60 ℃

(6 ... 6.63) x 10-5

Transmission Range, microns

0.55 - 18

Thermal

Thermal Linear Expansion, ℃-1 at 27 ℃

7.9 x 10-6

Thermal Conductivity, W/(m * ℃) at 20 ℃

14.1

Specific Heat Capacity, J/(kg * ℃)

0.367 x 103

Thermal Stability, ℃

57 ±7

Melting Point, ℃

1520 ±15

Mechanical

Density, g/cm3 at 20 ℃

5.26

Mohs Hardness

4

Vickers Microhardness, Pa

(101 ±3) x 107

Young Modulus (E), Pa

7.76 x 1010

Shear Modulus (G), Pa

2.96 x 1010

Poisson Ratio

0.311

Chemical

Molecular Weight144.33
Solubility 
in water, gram/100cm3insoluble
in acidssoluble

Ref. Index vs. Wavelength λ

Wavelength, Microns

Refractive Index

1.0

2.4894

2.0

2.4462

3.0

2.4376

4.0

2.4331

5.0

2.4296

6.0

2.4258

7.0

2.4219

8.0

2.4176

9.0

2.4123

10.0

2.4067

11.0

2.4006

12.0

1.3936

12.5

2.3891

15.0

2.3662

Internal Transmittanceτ i (λ) vs. Wavelength λ

Wavelength, Microns

Internal Transmittance

0.5

0.65

1.0

0.76

3.0

0.94

5.0

0.97

7.0

0.99

8.0

0.99

9.0

0.99

10.0

0.99

12.0

0.98

15.0

0.90

20.0

0.16