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The Review of Laser Engineering

Multi-wave-mixing and decoherence control in semiconductors

F. Minami, T. Kishimoto, Atsushi Hasegawa, M. Sasaki

Published Jan 1, 2005• 0 citations
Publisher
DOI
10.2184/lsj.33.3

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We report the first decoherence control of excitons which was performed on the model semiconductor GaSe by using successive three femtosecond pulses, i.e., the six-wave mixing configuration. The second pulse acts as a $\ensuremath{\pi}$ pulse which reverses the time evolution of non-Markovian dynamics. By changing the pulse interval conditions, we confirmed the suppression of exciton decoherence by $\ensuremath{\pi}$ pulse irradiation. From the analysis of the decoherence, it is also found that the six-wave mixing technique can successfully be applied to determine the reservoir parameters.