GaAs - Gallium Arsenide
American Photonics gallium arsenide provides an alternative to zinc selenide when toughness and durability are important. GaAs works well in high power CW CO2 laser lenses and partial reflectors. In applications when contaminant particles can build up on the optics surface, GaAs provides better performance and longer life.
GaAs is thoroughly inspected for voids and inclusions to insure your material is healthy for optical applications. The material is non-hygroscopic and chemically stable except when contacted with strong acids.
American Photonics gallium arsenide provides an alternative to zinc selenide when toughness and durability are important. GaAs works well in high power CW CO2 laser lenses and partial reflectors. In applications when contaminant particles can build up on the optics surface, GaAs provides better performance and longer life.
GaAs is thoroughly inspected for voids and inclusions to insure your material is healthy for optical applications. The material is non-hygroscopic and chemically stable except when contacted with strong acids.
American Photonics offers these raw materials:
Mechanical Properties |
||
Density |
(g/cm3 @ 300K) |
5.32 |
Knoop Hardness |
(kg/mm2) |
731 |
Young's Modulus |
(GPa) |
82.68 |
Bulk modulus |
(GPa) |
75.5 |
Poisson's Ratio |
0.31 |
|
Optical Properties |
||
Bulk Absorption |
(cm-1 @ 10.6µm) |
0.01 |
Temp. Change of refractive index |
(@10.6µm) |
149X10-6/°C |
Thermal Properties |
||
Thermal Conductivity |
(@20°C) |
0.48 W/cm/°C |
Thermal Expansion |
(K-1 @ 300K) |
5.7 X 10-6 |
Specific Heat |
(cal/(gK)@273K) |
0.076 |
Debye temperature |
(K) |
360 |
Refractive Index |
|||||||
Wavelength µm |
Index |
Wavelength µm |
Index |
Wavelength µm |
Index
|
Wavelength µm |
Index |
2.6 |
3.3239 |
5.4 |
3.2991 |
8.2 |
3.2868 |
11.0 |
3.2725 |
2.8 |
3.3204 |
5.6 |
3.2982 |
8.4 |
3.2859
|
11.2 |
3.2713 |
3.0 |
3.3169 |
5.8 |
3.2972 |
8.6 |
3.2849
|
11.4 |
3.2701 |
3.2 |
3.3149 |
6.0 |
3.2963 |
8.8 |
3.2840
|
11.6 |
3.2690 |
3.4 |
3.3129 |
6.2 |
3.2955 |
9.0 |
3.2830
|
11.8 |
3.2678 |
3.6 |
3.3109 |
6.4 |
3.2947 |
9.2 |
3.2818
|
12.0 |
3.2666 |
3.8 |
3.3089 |
6.6 |
3.2939 |
9.4 |
3.2806
|
12.2 |
3.2651 |
4.0 |
3.3069 |
6.8 |
3.2931 |
9.6 |
3.2794
|
12.4 |
3.2635 |
4.2 |
3.3057 |
7.0 |
3.2923 |
9.8 |
3.2782
|
12.6 |
3.2620 |
4.4 |
3.3045 |
7.2 |
3.2914 |
10.0 |
3.2770
|
12.8 |
3.2604 |
4.6 |
3.3034 |
7.4 |
3.2905 |
10.2 |
3.2761
|
13.0 |
3.2589 |
4.8 |
3.3022 |
7.6 |
3.2896 |
10.4 |
3.2752
|
13.2 |
3.2573 |
5.0 |
3.3010 |
7.8 |
3.2887 |
10.6 |
3.2743
|
13.4 |
3.2557 |
5.2 |
3.3001 |
8.0 |
3.2878 |
10.8 |
3.2734
|
13.6 |
3.2541 |
