Open AccessМежзонный двухфотонный линейно-циркулярный дихроизм в полупроводниках в приближении Кейна
Author(s) -
В.Р. Расулов,
Р.Я. Расулов,
Б.Б. Ахмедов,
И.А. Муминов
Publication year - 2022
Publication title -
fizika i tehnika poluprovodnikov
Language(s) - English
Resource type - Journals
eISSN - 1726-7315
pISSN - 0015-3222
DOI - 10.21883/ftp.2022.01.51813.9719
Subject(s) - semiconductor , photon , attenuation coefficient , two photon absorption , circular polarization , polarization (electrochemistry) , linear dichroism , absorption (acoustics) , magnetic circular dichroism , band gap , dichroism , physics , optics , condensed matter physics , materials science , molecular physics , circular dichroism , chemistry , optoelectronics , spectral line , quantum mechanics , laser , crystallography , microstrip
Interband two-photon optical transitions are classified and expressions are obtained for the matrix elements in a narrow-gap semiconductor 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 two-photon absorption of light, which differ from each other by the types of optical transitions, are analyzed depending on the degree of polarization of the light, and a quantitative analysis of the coefficient of linear-circular dichroism of two-photon absorption of light is carried out.Expressions are obtained for the spectral dependence of the coefficient of interband two-photon absorption of light in narrow-gap semiconductors in the Kane model.