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Coherent Phonons as an Ultrafast Probe of Optical Nonlinearities in Semiconductors

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Abstract

Since the first time-resolved observation of coherent phonons in semiconductors [1], the excitation of coherent lattice vibrations in solid states has attracted considerable interest due to the information, which can be obtained from these kind of experiments not accessible by other experimental techniques. We discuss two recent achievements on the observation of the nonlinear dynamics of the coupled phonon-carrier system by pump-probe reflectivity spectroscopy using femtosecond laser pulses.

© 1996 Optical Society of America

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