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Gallium Arsenide (GaAs)

Gallium Arsenide (GaAs)

Molecular Weight 144.63
Density, g/cm3 at 300K 5.32
Absorption Coefficient. 1 / cm at 10.6 m <0.02
Useful Transmission Range, m 1 -11
Reflection Losses, % for 2 surfaces at 12m 45
Dielectric Constant at 300 K , high frequency 10.88
Dielectric Constant at 300 K, static 12.85

Melting point, K

1511
Thermal Conductivity, W /(m k) at 300 K 55
Thermal Expansion, 1 /K at 300 K Specific 5.7 x l0-6
Heat, cal/(g K) at 273 K 0.076

Debye Temperature, K

360

Knoop Hardness, kg/ mm2

731
Young's Modulus, Gpa 82.68
Bulk Modulus, Gpa 75.5

Poisson Ratio

0.31

Bandgap, eV

1.4

Solubility in water

None

Index of Refraction

8.0 microns 3.34
10.0 microns 3.13
11.0 microns 3.04
13.0 microns 2.97
13.7 microns 2.89
14.5 microns 2.82
15.0 microns 2.73
17.0 microns 2.59
19.0 microns 2.41
21.9 microns 2.12