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Impurity‐related dynamical optical switching in CdS
Author(s) -
Schmolke R.,
Schöll E.,
Nägele M.,
Gutowski J.
Publication year - 1995
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.2221880228
Subject(s) - optical bistability , bistability , materials science , impurity , conduction band , homogeneous , wavelength , optoelectronics , band gap , optics , lattice (music) , optical switch , doping , thermal conduction , condensed matter physics , nonlinear optics , physics , laser , quantum mechanics , acoustics , composite material , thermodynamics , electron
Nonlinear optical transmission in unintentionally or lightly doped CdS crystals is studied theoretically and experimentally near the band gap. A spatially homogeneous three‐level model is developed which explains the observed optical switching process and its dependence upon incident intensity, wavelength, lattice temperature, and surface reflectivity. It is shown that the switching is due to the dynamics of the generation‐recombination processes involving donors, acceptors, and the conduction band, and not due to transmissive optical bistability.