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Electric field effect on two‐photon transitions near thresholds in solids. II. Excitonic effects
Author(s) -
Yang E.
Publication year - 1973
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.2220590207
Subject(s) - exciton , electric field , photon , dielectric , electron , condensed matter physics , absorption (acoustics) , binding energy , photon energy , attenuation coefficient , atomic physics , field (mathematics) , physics , optics , optoelectronics , quantum mechanics , mathematics , pure mathematics
The excitonic effect on the dielectric properties of solids has been included in the calculation of the electric‐field‐induced change of the coefficient of two‐photon absorption. It is shown that the magnitude and line shapes are drastically changed when the exciton binding energy E B varied from E B < ℏΩ to E B ≫ ℏΩ, where ℏΩ is the effective characteristic electro‐optic energy which is calculated by including the electron‐hole interaction in solids.