Coherent optical phonon generation by the electric current in quantum wells

Komirenko, S. M.; Komirenko, S.M.; Kim, K. W.; Kim, K.W.; Kochelap, V. A.; Kochelap, V.A.; Fedorov, I.; Stroscio, M. A.; Stroscio, M.A.
December 2000
Applied Physics Letters;12/18/2000, Vol. 77 Issue 25
Academic Journal
This letter addresses the effect of generation of confined LO phonons by drifting electrons in quantum wells. We have derived a general formula for the phonon increment as a function of phonon wave vector, electron drift velocity, and structure parameters. Numerical estimates of the phonon increment and the phonon lifetimes have shown that AlAs/GaAs/AlAs and GaSb/InSb/GaSb quantum well structures can demonstrate the effect of coherent LO phonon generation by the electric current. © 2000 American Institute of Physics.


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