Optical nonlinearities in GaSe and InSe crystals upon laser excitation

Autor:	L. G. Gasanova, V. M. Salmanov, R. M. Mamedov, A. G. Guseinov, A. G. Kyazym-zade
Rok vydání:	2014
Předmět:	Materials science business.industry Exciton Resonance Laser Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials law.invention Blueshift law Attenuation coefficient Transmittance Photonics Atomic physics business Excitation
Zdroj:	Optics and Spectroscopy. 116:595-598
ISSN:	1562-6911 0030-400X
DOI:	10.1134/s0030400x1404016x
Popis:	The nonlinear absorption of light and its temporal evolution in the vicinity of exciton resonance in layered GaSe and InSe crystals under high optical excitation have been experimentally investigated. The decisive factor for the observed temporal dependence of the absorption coefficient and its dependence on the excitation intensity is screening excitons by nonequilibrium-carrier plasma. It is shown that the increase in the transmittance in the absorption-band edge in GaSe with a simultaneous blue shift of the band edge is caused by filling the energy bands under high optical excitation.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b01816cb75fddc37f532e0570c9799e8 https://doi.org/10.1134/s0030400x1404016x Zobrazit plný text záznamu Plný text ve formátu PDF