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Optical Oscillations and Their Peculiarities Caused by Internal Switching Delay in Optically Bistable CdS Crystals
Author(s) -
Kažukauskas V.,
Issler H.,
Grohs J.,
Klingshirn C.
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.2221870123
Subject(s) - bistability , optics , beam (structure) , optical bistability , light beam , physics , pulse (music) , optical switch , switching time , materials science , optoelectronics , nonlinear optics , laser , detector
Light oscillations due to internal switching delay in optically bistable CdS platelets are reported using a geometry with two exciting beams. It is shown that in the case when one of the exciting beams has the form of a long thin light strip, an internal delay occurs due to the final propagation speed of the bistable switching front along it (switching wave) which enables one to obtain oscillations using electrooptical feedback without external delay. If an external delay is applied to one of the beams, while the second one appears as a single light pulse peculiarities of the oscillations caused by the interaction of both delay signals are obtained, which are not observed if only one light beam is used.