Direct acoustic phonon excitation by intense and ultrashort terahertz pulses
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We report on the direct and resonant excitation of acoustic phonons in an AlGaAs intrinsic semiconductor using intense coherent and single cycle terahertz pulses created by two-color femtosecond laser pulse filamentation in air. While the electrons are left unperturbed, we follow the lattice dynamics with time-delayed optical photons tuned to the interband transition. © 2010 American Institute of Physics.
author list (cited authors)
Manceau, J., Loukakos, P. A., & Tzortzakis, S.