Abstract
Recently we have found a class of media, namely, zing-blende semiconductors (e.g., GaAS and InSb), in which polarization-sensitive interaction with light exhibits time- irreversible behavior.1,3 This phenomenon is due to relativistic q-linear spin splitting (q is the wave vector of the electron) in the band structure. Here we report what we believe to be the first results of a femtosecond pump-probe study of light-induced time-irreversible birefringence/di-chroism.
© 1995 Optical Society of America
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