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Proceedings Paper

Optical hysteresis and nonlinear light absorption in a-Si:H and a-SiC:H thin films
Author(s): Valentin N. Ciumash; Ion A. Cojocaru; G. Bostan; G. Para; Giampiero de Cesare; S. La Monica; Gabriella Maiello; A. Ferrari
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Paper Abstract

An optical hysteresis and nonlinear absorption of the microsecond and nanosecond laser pulse at interband excitation of different a-Si:H and a-SiC:H films are reported. To explain the experimental results a new physical model is suggested, taking into account the light interaction with nonequilibrium localized lattice vibrations anharmonically coupled with the extended phonons.

Paper Details

Date Published: 3 November 1995
PDF: 6 pages
Proc. SPIE 2648, International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics, (3 November 1995); doi: 10.1117/12.226165
Show Author Affiliations
Valentin N. Ciumash, Institute of Applied Physics (Moldova)
Ion A. Cojocaru, Institute of Applied Physics (Moldova)
G. Bostan, Institute of Applied Physics (Moldova)
G. Para, Institute of Applied Physics (Moldova)
Giampiero de Cesare, Univ. di Roma/Sapienza (Italy)
S. La Monica, Univ. "La Sapienza" (Italy)
Gabriella Maiello, Univ. "La Sapienza" (Italy)
A. Ferrari, Univ. "La Sapienza" (Italy)


Published in SPIE Proceedings Vol. 2648:
International Conference on Optical Diagnostics of Materials and Devices for Opto-, Micro-, and Quantum Electronics

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