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Proceedings Paper

Optical hysteresis and nonlinear absorption of laser pulses in a-As2S3
Author(s): Valentin N. Ciumash; G. Bostan; Ion A. Cojocaru; P. Cerbari
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Paper Abstract

Results of the experimental investigations of the nonlinear absorption of microsecond laser pulses in thin amorphous As2S3 films are presented. The optical transmission hysteresis at interband excitation of As2S3 films in a blue-green spectral region is reported for the first time. A reversible film photodarkening induced in the field of laser pulses was registered. It was suggested that the interband nonlinear light absorption could be explained by taking into account the light interaction with nonequilibrium phonons.

Paper Details

Date Published: 8 March 1995
PDF: 6 pages
Proc. SPIE 2461, ROMOPTO '94: Fourth Conference in Optics, (8 March 1995); doi: 10.1117/12.203547
Show Author Affiliations
Valentin N. Ciumash, Institute of Applied Physics (Moldova)
G. Bostan, Institute of Applied Physics (Moldova)
Ion A. Cojocaru, Institute of Applied Physics (Moldova)
P. Cerbari, Institute of Applied Physics (Moldova)


Published in SPIE Proceedings Vol. 2461:
ROMOPTO '94: Fourth Conference in Optics
Valentin I. Vlad, Editor(s)

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