Premium
Photovoltaic effect in semiconductors stimulated by an additional electromagnetic wave
Author(s) -
Shon Nguyen Hong,
Anh Vo Hong
Publication year - 1986
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.2221340146
Subject(s) - rectification , physics , semiconductor , polarization (electrochemistry) , electromagnetic field , jump , excited state , anomalous photovoltaic effect , electron , photovoltaic effect , electromagnetic radiation , condensed matter physics , computational physics , optics , photovoltaic system , quantum mechanics , dielectric , chemistry , power (physics) , electrical engineering , ferroelectricity , engineering
Abstract A new mechanism of the interband photovoltaic effect in semiconductors is considered when the direct current in a sample is excited by the simultaneous action of two linearly polarized electromagnetic waves. By solving the kinetic equation in relaxation time approximation for the photo‐electrons and using perturbation technique for calculating the transition probabilities the formula for the photostimulated current is obtained that shows an explicit dependence on the polarization direction, mutual orientation, and intensity of the two driving fields. In the resonant condition concerning the external field frequencies, r Ω 1 = s Ω 2 ( r , s are odd integers) there appears a jump in the current value due to the optical rectification effect. Numerical estimations are given which show that the effect is strong enough to be measurable in available experiments.