Abstract

The different manifestations of the crystalline potential anharmonicity in GaSe were studied. The temperature dependence of one and multiphonon mode energies was obtained from infrared absorption and Raman scattering experiments. The temperature and frequency dependence of multiphonon absorption coefficient were discussed.

© 1981 Optical Society of America

Modeling of the frequency- and temperature-dependent absorption coefficient of long-wave-infrared (2–25 µm) transmitting materials

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Photoacoustic measurement of internal quantum efficiency and observation of the exciton effect in GaSe with photoacoustic phase spectra

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