Abstract
We present time resolved x-ray diffraction (TRXD) experiments on the transport of a coherent acoustic wave-packet and nonlinear carrier relaxation processes across the nearly ideal AlGaAs/GaAs interface. A femtosecond laser impulsively excites the underlying substrate such that the coherent acoustic phonons take the form of two counter propagating unipolar strain pulses and associated hot carrier dynamics. Picosecond TRXD is used to observe the laser-induced strain separately for the film and substrate.
© 2007 IEEE
PDF ArticleMore Like This
K. Sokolowski Tinten, M. Horn von Hoegen, D. von der Linde, A. Cavalleri, C. W. Siders, F. L. H. Brown, C. Toth, J. A. Squier, C. P. J. Barty, K. R. Wilson, and M. Kammler
MF43 International Conference on Ultrafast Phenomena (UP) 2000
Yuan Gao and Matthew F. DeCamp
LTu4H.3 Laser Science (LS) 2012
M.F. DeCamp, D.A. Reis, P.H. Bucksbaum, B. Adams, E.M. Dufresne, and R. Clarke
JTuD2 Conference on Lasers and Electro-Optics (CLEO:S&I) 2002