Optical nonlinearities in GaSe and InSe crystals upon laser excitation

Kyazym-Zade, A.G.; Salmanov, V.M.; Guseinov, A.G.; Gasanova, L.G.; Məmmədov , Rövşən

doi:10.1134/s0030400x1404016x

Optical nonlinearities in GaSe and InSe crystals upon laser excitation

Kyazym-Zade A., Salmanov V., Guseinov A., Gasanova L., Məmmədov R.

Optics and Spectroscopy (English translation of Optika i Spektroskopiya), vol.116, no.4, pp.595-598, 2014 (SCI-Expanded, Scopus)

Nəşrin Növü: Article / Article
Cild: 116 Say: 4
Nəşr tarixi: 2014
Doi nömrəsi: 10.1134/s0030400x1404016x
jurnalın adı: Optics and Spectroscopy (English translation of Optika i Spektroskopiya)
Jurnalın baxıldığı indekslər: Science Citation Index Expanded (SCI-EXPANDED), Scopus
Səhifə sayı: pp.595-598
Adres: Bəli

Qısa məlumat

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. © 2014 Pleiades Publishing, Ltd.