Gallium Arsenide (GaAs) Optical Material

Gallium arsenide is a non-glass optical ceramic material.

Material Properties

Density5.3 g/cm3 (330 lb/ft3)

Elastic (Young's, Tensile) Modulus85 GPa (12 x 106 psi)

Knoop Hardness750

Light Transmission Range1.0 to 16 µm

Melting Onset (Solidus)1400 °C (2550 °F)

Poisson's Ratio0.31

Refractive Index3.4

Specific Heat Capacity360 J/kg-K

Thermal Conductivity47 W/m-K

Thermal Diffusivity25 m2/s

Thermal Expansion5.6 µm/m-K

The length of each bar compares the given value to the highest value in the database.

Further Reading

Handbook of Optical Constants of Solids, Edward D. Palik (editor), 1998

Handbook of Optical Materials, Marvin J. Weber, 2003