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Band-to-acceptor luminescence has been used to observe the incoherent dynamics of hot carriers in semiconductors for a couple of years.1 In this paper we investigate the generation and relaxation of hot electrons in GaAs created by femtosecond light pulses. For the first time it is demonstrated that coherent effects play a major role also for the interpretation of seemingly incoherent experiments. The experimental results are analyzed by a Monte Carlo solution of the semiconductor Bloch equations.
© 1994 IEEE
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