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3 November 1995 Nonlinear absorption of laser pulses in amorphous and crystalline As2S3 thin films
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Proceedings Volume 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics; (1995) https://doi.org/10.1117/12.226170
Event: International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, 1995, Kiev, Ukraine
Abstract
Results of the experimental investigations of absorption of laser pulses in amorphous (a-) and crystalline (c-) As2S3 films are presented. The optical transmission hysteresis and reversible film photodarkening at interband excitation of a-As2S3 films in a blue-green spectral region are reported. It was suggested that the nonlinear light absorption could be explained by taking into account the light interaction with nonequilibrium localized lattice vibrations anharmonically coupled with the extended phonons. The measurements of peculiarities of the pulse absorption in crystalline As2S3 films can confirm the proposed explanation.
© (1995) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Valentin N. Chumash, G. Bostan, Ion A. Cojocaru, Niculae E. Mincu, and P. Cerbari "Nonlinear absorption of laser pulses in amorphous and crystalline As2S3 thin films", Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); https://doi.org/10.1117/12.226170
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