Elastic
constants cij (1011 dyn/cm2
or 1010 Pa):
| 7.15 |
-0.57 |
1.33 |
0 |
0 |
0 |
| -0.57 |
7.15 |
1.33 |
0 |
0 |
0 |
| 1.33 |
1.33 |
5.61 |
0 |
0 |
0 |
| 0 |
0 |
0 |
1.27 |
0 |
0 |
| 0 |
0 |
0 |
0 |
1.27 |
0 |
| 0 |
0 |
0 |
0 |
0 |
0.62 |
Photoelastic constants
pij:
| 0.253 |
0.24 |
0.24 |
0 |
0 |
0 |
| 0.24 |
0.253 |
0.24 |
0 |
0 |
0 |
| 0.223 |
0.223 |
0.216 |
0 |
0 |
0 |
| 0 |
0 |
0 |
0.09 |
0 |
0 |
| 0 |
0 |
0 |
0 |
0.09 |
0 |
| 0 |
0 |
0 |
0 |
0 |
-0.061 |
Sound velocity:
| direction |
polarization |
v
(105 cm/s) |
| [100] |
[100],
L |
5.41 |
| [001] |
[001],
L |
4.86 |
Acousto-optic figure
of merit:
| sound
dir. |
sound
pol. |
light
dir. |
light
pol. |
M
(10-18 s3/g) |
| [100] |
[100] |
|
[100] |
1.45 |
|
Refraction
indices:
| l(mkm) |
nx |
ny |
nz |
| 0.2 |
1.6226 |
1.6226 |
1.5639 |
| 0.3 |
1.5456 |
1.5456 |
1.4982 |
| 0.4 |
1.5245 |
1.5245 |
1.4802 |
| 0.5 |
1.5149 |
1.5149 |
1.4725 |
| 0.6 |
1.5093 |
1.5093 |
1.4683 |
| 0.7 |
1.5052 |
1.5052 |
1.4656 |
| 0.8 |
1.5019 |
1.5019 |
1.4637 |
| 0.9 |
1.4989 |
1.4989 |
1.4622 |
| 1 |
1.496 |
1.496 |
1.461 |
| 1.1 |
1.4931 |
1.4931 |
1.4599 |
| 1.2 |
1.4902 |
1.4902 |
1.4588 |
| 1.3 |
1.4871 |
1.4871 |
1.4578 |
| 1.4 |
1.4838 |
1.4838 |
1.4568 |
| 1.5 |
1.4804 |
1.4804 |
1.4558 |
| 1.6 |
1.4767 |
1.4767 |
1.4548 |
| 1.7 |
1.4729 |
1.4729 |
1.4537 |
| 1.8 |
1.4688 |
1.4688 |
1.4526 |
| 1.9 |
1.4646 |
1.4646 |
1.4515 |
| 2 |
1.46 |
1.46 |
1.4503 |
NOTE: It
should be taken into account that nx=ny=nz=n
for optically isotropic material and nx=ny=no
and nz=ne
for uniaxial crystal |
Crystal
symmetry: -42m
Density: 2.338 g/cm3
Optical spectral range: 0.25 - 1.7 mkm |
