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Scientific-technical journal

Abstract

Interband two-photon optical transitions are analyzed, and expressions are obtained for the matrix elements in a narrow-gap crystal depending on the band parameters, degree of polarization, and light frequency. It is shown that the main contribution to two-photon linear-circular dichroism in narrow-gap semiconductors is made by optical transitions proceeding from the subband of light holes to the conduction band.

The dependences of the partial coefficients of interband one- and two-photon absorption of light are obtained, which differ from each other by the types of optical transitions, depending on the frequency and degree of polarization of light in narrow-gap crystals in the Kane model.

First Page

28

Last Page

31

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