Direct acoustic phonon excitation by intense and ultrashort terahertz pulses

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 dynamic...

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Veröffentlicht in:	Applied physics letters 2010-12, Vol.97 (25)
Hauptverfasser:	Manceau, J.-M., Loukakos, P. A., Tzortzakis, S.
Format:	Artikel
Sprache:	eng
Schlagworte:	ALUMINIUM ARSENIDES ALUMINIUM COMPOUNDS ARSENIC COMPOUNDS ARSENIDES BEAMS BOSONS COLOR MODEL COMPOSITE MODELS CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY CRYSTAL GROWTH METHODS ELECTROMAGNETIC RADIATION ELEMENTARY PARTICLES ENERGY-LEVEL TRANSITIONS EPITAXY EXCITATION GALLIUM ARSENIDES GALLIUM COMPOUNDS LASER RADIATION LASERS MASSLESS PARTICLES MATERIALS MATHEMATICAL MODELS PARTICLE MODELS PHONONS PHOTONS PNICTIDES QUARK MODEL QUASI PARTICLES RADIATIONS SEMICONDUCTOR DEVICES SEMICONDUCTOR LASERS SEMICONDUCTOR MATERIALS SOLID STATE LASERS SOUND WAVES SPECTRA TIME DELAY VELOCITY
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