NONLINEAR LIGHT-ABSORPTION IN GASE CRYSTALS AT THE FUNDAMENTAL ABSORPTION-EDGE

Authors
KALAFI M BIDADI H TAJALLI H SALMANOV V
Citation
M. Kalafi et al., NONLINEAR LIGHT-ABSORPTION IN GASE CRYSTALS AT THE FUNDAMENTAL ABSORPTION-EDGE, Optical materials, 6(1-2), 1996, pp. 117-120
Citations number
24
Categorie Soggetti
Material Science",Optics
Journal title
Optical materials → ACNP
ISSN journal
09253467
Volume
6
Issue
1-2
Year of publication
1996
Pages
117 - 120
Database
ISI
SICI code
0925-3467(1996)6:1-2<117:NLIGCA>2.0.ZU;2-8
Abstract
The nonlinear light absorption at the fundamental absorption edge for high excitation intensities in GaSe has been investigated experimental ly. The bleaching of band-edge absorption which manifests itself as an apparent blue shift of the absorption edge can be interpreted on the base of bandfilling nonlinearities. It is shown that, the observed neg ative absorption change in GaSe crystal is the basis of optical amplif ication and the semiconductor laser.