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On the theory of interband absorption of light in a field of intense acoustic flux

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Abstract

It is known that the presence in a crystal of an irregular force field leads, in particular, to the appearance of a low-frequency tail on the interband optical absorption curve for light quanta energies smaller than the width of the forbidden band. This paper studies a particular case of such a field, generated by an intense noise flux of longwave acoustic vibrations propagating through the sample. It is shown that the shape of the tail of the absorption curve is different for different mechanisms (deformation, piezoelectric) of formation of the field. The results obtained are used to interpret some experiments which investigate the modulation of the intrinsic absorption edge of piezocrystals by acoustoelectric domains.

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Authors and Affiliations

  1. Rostov-on-Don State University, USSR

    E. V. Burtsev

Authors
  1. E. V. Burtsev
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Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 1, pp. 111–116, January, 1973.

I would like to thank Professor V. L. Bonch-Bruevich for suggesting this topic and for his helpful advice.

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Burtsev, E.V. On the theory of interband absorption of light in a field of intense acoustic flux. Soviet Physics Journal 16, 86–90 (1973). https://doi.org/10.1007/BF00893348

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  • DOI: https://doi.org/10.1007/BF00893348

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