Acousto-optic materials
Standard characterictics of the main materials used in acousto-optics.
Material
Type
Wavelength range for AO applications (nm)
Input Polarization (*)
Refractive Index
@λ (nm)
Laser power density typ (W/mm2)
Germanium
Crystal
2500 - 11000
Linear //
4
10600
5
Doped glass
Glass
500 - 650
Random
2.09
633
1
Ge33As12Se55
Glass
1100 - 1700
Random
2.59
1064
1
As2S3
Glass
700 - 900
Random
2.46
1150
1
PbMoO4
Crystal
480 - 1100
Random
2.26 / 2.38
633
0.5
TeO2
Crystal
450 - 1100
Linear1
2.26
633
0.5
TeO2
Crystal
350 - 4500
Linear-Circular
2.26
633
0.5
SiO2 (fused silica)
Glass
200 - 2200
Linear1
1.46
633
> 100
SiO2 (fused silica)
Glass
200 - 2200
Random
1.46
633
< 100
(*) : // and 1 means parallel and perpendicular to the acoustic wave direction for optimum AO coupling