J.A. Kash
Physical Review B
Time-dependent spontaneous Raman spectra of optically pumped GaAs have been measured with subpicosecond time resolution. When the optically injected carrier density is less than 1017 cm-3, we temporally resolve the growth of the optically induced nonequilibrium LO-phonon population and deduce an average electron-phonon scattering time of about 165 fs. For higher injected carrier densities, substantial time-dependent changes are observed in the spectra which result from screening of the LO phonons by the free carriers and the relaxation of the free carriers to the band edges. © 1985 The American Physical Society.
J.A. Kash
Physical Review B
J.A. Kash, J.C. Tsang
UEO 1999
J.A. Kash, B. Pezeshki, et al.
LEOS 1995
S.S. Jha, J.C. Tsang
Physical Review B