Gallium phosphide physical properties

Crystal symmetry: 43m

Density: 4,3 g/cm^3

Optical spectral range: 0,53 - 16 mkm

Elastic constants : 10^11 dyn/cm^2 or 10^10 Pa)

14.126.246.24000
6.2414.126.24000
6.246.2414.12000
0007.0400
00007.040
000007.04

Photolastic constants :

-0.151-0.082-0.082000
-0.082-0.151-0.082000
-0.082-0.082-0.151000
000-0.07400
0000-0.0740
00000-0.074

Refraction indices:

The values for refraction index for the given optical wavelengths.

wavelength, mkmrefraction index
0.553.4411
0.573.4012
0.63.3524
0.633.3132
0.663.2811
0.73.2462
0.83.183
0.93.143
13.1192
1.23.0844
1.43.0646
1.63.0509
1.83.0439
2.23.0331
2.43.0296
2.83.0236
3.23.0197
3.63.0166
43.0137

Sound velocity:

direction polarizationv (10^5 cm/s)
[110][110], L6.32
[100]S4.13

Gallium phosphide slowness surfaces in important planes

Acousto-optic figure of merit:

sound dir.sound pol.light dir.light pol.M (10^-18 s^3/g)
[110][110]--[110]44.6
[100]S--arb.24.1