We investigate the dynamics of ballistic charge currents, optically-injected into GaAs by quantum interference of 1550 and 775nm, 150fs pulses. Space-charge induced transport and ambipolar diffusion successively define the relaxation dynamics on a 500fs-20ps timescale.
© 2005 Optical Society of America
(190.0190) Nonlinear optics : Nonlinear optics
(190.4720) Nonlinear optics : Optical nonlinearities of condensed matter
(320.0320) Ultrafast optics : Ultrafast optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors
Y. Kerachian, P. A. Marsden, A. Najmaie, J. E. Sipe, H. M. van Driel, and A. L. Smirl, "Femtosecond Dynamics of Ballistic Charge Current Gratings in GaAs," in Conference on Lasers and Electro-Optics/Quantum Electronics and Laser Science and Photonic Applications Systems Technologies, Technical Digest (CD) (Optical Society of America, 2005), paper QThI5.
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