Hyper-Raman Gain due to Excitons Coherently Driven with Femtosecond Pulses
- 10 November 1997
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 79 (19) , 3716-3719
- https://doi.org/10.1103/physrevlett.79.3716
Abstract
We report the observation of optical gain in the transparency region of gallium arsenide highly excited by femtosecond pulses just below the excitonic resonance. We find a very good agreement of the pump-probe spectra with a model based on the fifth-order development of the time-dependent density operator.Keywords
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