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Products › Materials › Gallium Arsenide (GaAs)
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Gallium Arsenide (GaAs) |
| Gallium Arsenide has specialist applications in far IR optics and lens systems. |
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Product Data |
| Transmission Range : |
1 to 16 μm (1) |
| Refractive Index : |
3.2727 @ 10.33 μm (1) |
| Reflection Loss : |
44% @ 10.33 μm |
| Absorption Coefficient : |
0.01 cm-1 |
| Reststrahlen Peak : |
n/a |
| dn/dT : |
147 x 10-6/°C @ 10 μm (4) |
| dn/dμ = 0 : |
6.3 μm |
| Density : |
5.315 g/cc |
| Melting Point : |
1511°C |
| Thermal Conductivity : |
48 W m-1 K-1 @ 273K (2) |
| Thermal Expansion : |
5.7 x 10-6 /°C at 300K (3) |
| Hardness : |
Knoop 750 |
| Specific Heat Capacity : |
360 J Kg-1 K-1 |
| Dielectric Constant : |
12.91 at low frequencies |
| Youngs Modulus (E) : |
84.8 GPa |
| Shear Modulus (G) : |
n/a |
| Bulk Modulus (K) : |
75.5 GPa |
| Elastic Coefficients : |
n/a |
| Apparent Elastic Limit : |
71.9 MPa |
| Poisson Ratio : |
0.31 |
| Solubility : |
Insoluble in water |
| Molecular Weight : |
144.64 |
| Class/Structure : |
Cubic ZnS, F43m, (100) cleavage |
To download this data or our MSDS safety data sheet as a pdf, please click on the links at the top of the page. To expand the transmission graphs, please click on the image.
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Refractive Index |
| µm |
No |
µm |
No |
µm |
No |
| 1.033 |
3.492 |
1.550 |
3.3737 |
2.066 |
3.338 |
| 2.480 |
3.324 |
3.100 |
3.3125 |
4.133 |
3.3027 |
| 4.959 |
3.2978 |
6.199 |
3.2921 |
7.293 |
3.2874 |
| 8.266 |
3.2831 |
9.537 |
3.2769 |
10.33 |
3.2727 |
| 11.27 |
3.2671 |
12.40 |
3.2597 |
13.78 |
3.2493 |
| 15.50 |
3.2336 |
17.71 |
3.2081 |
19.07 |
3.1866 |
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Product Notes |
Gallium Arsenide is produced by Czochralski or horizontal Bridgeman crystal growth techniques. As it is arsenic bearing, precautions in handling and working should be observed.
REFERENCES:
(1) Handbook Optical Constants, ed Palik, V1, ISBN 0-12-544420-6
(2) Deutch, J.Electron. Mater. V4 p679
(3) Sze, Physics of Semiconductor Devices, Wiley 1981
(4) M.Cadona. Proc. Int Conf. Semicond. Phys. 1960 p.388
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Data provided is extracted from our technical handbook of materials. While every attempt has been made to verify the source of the information, Crystran Ltd accept no responsibility for accuracy of data |
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