Abstract
Circular photogalvanic effect (CPGE) is observed in sillenite crystals, whereas linear photogalvanic effect (LPGE) is observed in LiNbO/sub 3/. The mechanisms of CPGE and LPGE are linked to the asymmetry of the electron-phonon interaction (EPI) and the inclusion of indirect transitions, which can also occur with the participation of optical phonons. The authors cite Raman scattering (RS) of light as one of the most promising tools for studying the electron-phonon interaction based on the polarized spectra of optical phonons. The experimental results obtained for the LiNbO/sub 3/: Fe crystals is examined, as well as for the Bi/sub 12/SiO/sub 20/ sillenite crystals.
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