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Exciton–Phonon Mechanism of Optical Bistability
Author(s) -
Nitsovich B. M.,
Krechivskii O. V.,
Pestryakov G. M.
Publication year - 1988
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221500233
Subject(s) - exciton , optical bistability , bistability , semiconductor , phonon , condensed matter physics , biexciton , mechanism (biology) , physics , materials science , nonlinear optics , optoelectronics , nonlinear system , quantum mechanics
A joint effect of exciton–phonon and exciton–exciton interactions on optical properties of semiconductors is studied. In these substances the exciton density is shown to be a multivalued function of incident light intensity and the frequency and temperature conditions under which the optical bistability arises are specified. Investigation of nonlinear optical properties of semiconductors with account for the indirect phototransitions exhibits that both multistable optical states and the bistable ones distinguished by a complicated dynamics of the switching may be observed in such systems.