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- W1978968960 abstract "The role of electron-hole interaction in the ultrafast relaxation of hot photoexcited carriers in GaAs and how it depends on the carrier density and energy of the laser pulse is discussed. The intervalley transfer of carriers photoexcited by a 2.04 laser pulse and their response to 500V/cm field is examined for two excitation levels of 5x10<sup>16</sup> cm<sup>-3</sup> and 1018 cm<sup>-3</sup>. It is found that the transfer rates are not affected by e-h or electron-electron interaction at low excitation levels. At high excitation levels the e-h interaction accelerates the return rates to the central valley and provides an important energy loss channel for the electrons. In response to a 500V/cm field, the electrons exhibit very small velocities during the first two picoseconds. At times beyond 4 ps, the velocities are smaller for higher electron densities." @default.
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- W1978968960 date "1988-08-22" @default.
- W1978968960 modified "2023-09-25" @default.
- W1978968960 title "Electron-Hole Interaction In GaAs" @default.
- W1978968960 doi "https://doi.org/10.1117/12.947189" @default.
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