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 SM ISO690:2012CHUMASH, Valentin, BOSTAN, Gheorghe, COJOCARU, Ion, MINCU, Niculae, CERBARI, Pavel. Optical hysteresis and light absorption in a-As2S3 and c-As2S3. In: Proceedings of the International Semiconductor Conference: CAS, Ed. 18, 11-14 octombrie 1995, Sinaia. New Jersey: Institute of Electrical and Electronics Engineers Inc., 1995, pp. 87-88. DOI: https://doi.org/10.1109/SMICND.1995.494870 |
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| Proceedings of the International Semiconductor Conference 1995 | ||||||
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Conferința "International Semiconductor Conference" 18, Sinaia, Romania, 11-14 octombrie 1995 | ||||||
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| DOI:https://doi.org/10.1109/SMICND.1995.494870 | ||||||
| Pag. 87-88 | ||||||
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Results of the experimental investigations of nonlinear absorption of laser pulses in amorphous a-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 is reported for the first time. 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 c-As2S3 films can confirm the proposed explanation. |
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| Cuvinte-cheie Arsenic compounds, Crystalline materials, hysteresis, laser pulses, Lattice vibrations, Light absorption, Light transmission, Nonlinear optics, phonons |
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