CO2 LASER RADIATION ABSORPTION IN SEMI-INSULATING GALLIUM ARSENIDE
- 15 August 1968
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 13 (4) , 129-132
- https://doi.org/10.1063/1.1652539
Abstract
In conjunction with studies relating to high‐power CO2 laser windows the linear absorption coefficient α of Cr‐doped GaAs was measured by means of calorimetric techniques. It was found that α ≈ 0.02 cm−1, at room temperature. This result is shown to be consistent with theoretical considerations: At 10.6 μ, the lattice absorption of GaAs stems from the existence of a fourth‐order electric moment and does not involve the fundamental resonance.Keywords
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