Abstract
Coherent subpicosecond charge oscillations have been observed in several recent experiments performed on GaAs/GaALAs quantum well1 and superlattice2 samples. In such experiments a single femtosecond laser pulse photoexcites from the valence band to a superposition state consisting of two or more eigenfunctions in the conduction band. The time-varying interference between these wave functions gives rise to an ultrafast wave packet motion. This wave packet motion manifests itself as periodic tunneling between the two wells in a coupled quantum well system or as a Bloch oscillation in a biased superlattice.
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© 1996 Plenum Press, New York
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Weiner, A.M., Liu, Y. (1996). Prospects for Manipulating Bloch Oscillations in Biased Superlattices Through Femtosecond Pulse Shaping. In: Hess, K., Leburton, JP., Ravaioli, U. (eds) Hot Carriers in Semiconductors. Springer, Boston, MA. https://doi.org/10.1007/978-1-4613-0401-2_40
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DOI: https://doi.org/10.1007/978-1-4613-0401-2_40
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