TY - JOUR
T1 - Two-phonon Raman-scattering probe of nonequilibrium, high-frequency acoustic phonons
T2 - The TA-phonon bottleneck in GaAs
AU - Tsen, K. T.
AU - Abramsohn, D. A.
AU - Bray, Ralph
PY - 1982
Y1 - 1982
N2 - Two-phonon Raman spectroscopy is shown to be a viable probe of nonequilibrium, high-frequency acoustic phonons. These excess phonons were generated in GaAs at 25 K by intense Nd: YAlG (neodymium-doped yttrium aluminum garnet) laser pulses, and the same beam was used, in situ, for 90°Raman scattering. From the modulation of the overtones and the difference frequency combinations, the first direct and comprehensive information was obtained on both the frequencies and populations of excess phonons in the TA-phonon bottleneck.
AB - Two-phonon Raman spectroscopy is shown to be a viable probe of nonequilibrium, high-frequency acoustic phonons. These excess phonons were generated in GaAs at 25 K by intense Nd: YAlG (neodymium-doped yttrium aluminum garnet) laser pulses, and the same beam was used, in situ, for 90°Raman scattering. From the modulation of the overtones and the difference frequency combinations, the first direct and comprehensive information was obtained on both the frequencies and populations of excess phonons in the TA-phonon bottleneck.
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U2 - 10.1103/PhysRevB.26.4770
DO - 10.1103/PhysRevB.26.4770
M3 - Article
AN - SCOPUS:25344459380
SN - 0163-1829
VL - 26
SP - 4770
EP - 4773
JO - Physical Review B
JF - Physical Review B
IS - 8
ER -