ZnSe

Structure:

Cubic (zincblende)

Density

5.264 g/ cm³

Hardness

105 kg/ mm²

Flexural Strength (4pt bending)

7500 psi

Young’s Modulus

10.2 Mpsi

Poisson Ratio

0.28

Coefficient of thermal expansion

7.1×10−6/K

Specific Heat

0.339 J/gK

Thermal conductivity

0.16 W/cmK

Eg at 295 K

2.67 eV

Dielectric Constant

8.976

Max. Transmittance (λ=2.5-15 μm)

≥70.5 %

Absorption Coefficient (λ=10.6 μm)

(1-2)×10-3 cm-1 (including 2 surfaces)

Damage threshold (λ=10.6 μm)

≥100 kWt/cm2

Thermo-Optic Coef. (dn/dT)

6.1 ( λ=10.6 μm)

Refractive index (λ=10.6 μm)

2.4

Electrooptical coefficient r41 (λ=10.6 μm)

2.2×10-12 m/V

γ-radiation tolerance dose

> 106 J/kg

Diameter/Width

1-50 mm

Thickness/length

0.1-150 mm

Orientation

(110), (111)

Surface quality

As-grown, as-cut, 80/50, 60/40, 40/20 per MIL-0-13830