Excitonic absorption in GaSe and InSe crystals under picosecond excitation |
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| Authors: | A G Kyazym-zade A A Agaeva V M Salmanov A G Mokhtari |
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| Affiliation: | (1) Baku State University, ul. Khalilova 23, Baku, AZ1145, Azerbaijan |
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| Abstract: | The nonlinear light absorption in GaSe and InSe layered crystals in the exciton resonance region and its time evolution have been studied experimentally under high-density optical excitation. The observed variation of the absorption coefficient with time and excitation intensity is due not only to exciton-exciton interaction and the shielding of excitons by nonequilibrium carrier plasma but also to kinetic and relaxation-recombination processes in these materials. |
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