OPTICAL BISTABILITY OBSERVED IN AMORPHOUS SEMICONDUCTOR FILMS.

J. Hajto, I. Jánossy

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Abstract

The optical properties of amorphous self-supporting GeSe//2 films show strong non-linear behavior under the influence of relatively low-intensity cw laser irradiation. Discontinuities, bistability and, in special circumstances, oscillation in the optical properties have been found. The importance of thermal effects is experimentally proved. A theoretical model is constructed which explains some of the experimental findings. Evidence is presented, however, that, as well as thermal effects, photostructural changes also play an important role in the bistability and oscillatory phenomena.

Original languageEnglish
Pages (from-to)347-366
Number of pages20
JournalPhilosophical Magazine B: Physics of Condensed Matter; Electronic, Optical and Magnetic Properties
Volume47
Issue number4
Publication statusPublished - Apr 1983

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Optical bistability
Amorphous semiconductors
Thermal effects
Optical properties
Laser beam effects

ASJC Scopus subject areas

  • Engineering(all)

Cite this

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abstract = "The optical properties of amorphous self-supporting GeSe//2 films show strong non-linear behavior under the influence of relatively low-intensity cw laser irradiation. Discontinuities, bistability and, in special circumstances, oscillation in the optical properties have been found. The importance of thermal effects is experimentally proved. A theoretical model is constructed which explains some of the experimental findings. Evidence is presented, however, that, as well as thermal effects, photostructural changes also play an important role in the bistability and oscillatory phenomena.",
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AB - The optical properties of amorphous self-supporting GeSe//2 films show strong non-linear behavior under the influence of relatively low-intensity cw laser irradiation. Discontinuities, bistability and, in special circumstances, oscillation in the optical properties have been found. The importance of thermal effects is experimentally proved. A theoretical model is constructed which explains some of the experimental findings. Evidence is presented, however, that, as well as thermal effects, photostructural changes also play an important role in the bistability and oscillatory phenomena.

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