znse

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ZnSe - Zinc Selenide

American Photonics
CVD Zinc Selenide material is highly effective for infrared applications due to its extreme low bulk losses, high resistance to thermal shock and stability. APC material is used extensively in high-powered CO2 lasers, FLIR thermal imaging equipment, medical and industrial applications

APC can provide raw or generated blanks to most customer specifications. Circular, square or rectangular geometries are available. See APC's capabilities with fabrication and thin film coating for more details on finished optics.

znsms spec chart image

American Photonics Buy-Back Program insures each customer gets the highest value from every ZnSe optic purchased.

American Photonics offers these Raw Materials:

Mechanical Properties
Hardness Knoop, 50 gm load (kg mm-2) 110
  Vickers, 1kg load (kg mm-2) 112
Flexural Strength ( modulous of rupture)
  4 pt. loading (psi) 8 x 103
  4 pt. loading (MPa) 55
Fracture toughness (critical stress intensity factor, KIC Values)
  (MPa√m, Vickers, 100g) 0.5
Young's modulus (elastic modulus)
  (psi) 9.75 X 106
  (GPa) 67.2
Poisson's ratio   0.28




Thermal Properties
Coefficient of Thermal Expansion
(K-1 @ 273 K)
7.1 X 10-6
 
(K-1 @ 373 K)
7.8 X 10-6
 
(K-1 @ 473 K)
8.3 X 10-6
Thermal Conductivity
(JK-1m-1s-1 @ 298 K)
18.0
Heat Capacity
(Jg-1K-1 @ 298 K)
0.339

Optical Properties
10% transmission limits (t=6mm)
.5 - 22µm
Index of refraction inhomogeneity (∆ n/n)
(ppm @ 0.6328µm)
<3
Thermo-optic coefficient, dn/dT(298-358K)
(K-1 @ 0.6328µm)
1.07 X 10-4
 
(K-1 @ 1.15µm)
7.0 X 10-5
 
(K-1 @ 3.39µm)
6.2 X 10-5
 
(K-1 @ 10.6µm)
6.1 X 10-5
Bulk Absorpbtion Coefficient
(cm-1 @ 1.3µm)
5.0 X 10-3
 
(cm-1 @ 2.7µm)
7.0 X 10-4
 
(cm-1 @ 3.8µm)
4.0 X 10-4
 
(cm-1 @ 5.25µm)
4.0 X 10-4
 
(cm-1 @ 10.6µm)
5.0 X 10-4

Physical Properties
Crystal structure
Cubic
Grain size (diameter)
50-70µm
Density (g cm-3 @ 298K)
5.27
Resistivity (Ωcm)
≈1012
Chemical Purity (%)
99.996