Continuum contribution to excitonic four-wave mixing

D. Birkedal, Karim El, Hvam, Jørn Märcher
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引用次数: 1

Abstract

Summary form only given. We present an experimental and theoretical investigation of ultrafast transient four-wave mixing (TFWM) of GaAs-AlGaAs quantum wells for simultaneous excitation of exciton and continuum states. Recent TFWM experiments on semiconductors have shown unexpected results when both discrete exciton states and continuum states have been excited simultaneously by ultrafast laser pulses. The decay of the signal, as a function of delay, is significantly faster than the dephasing time of the excitons.
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连续体对激子四波混频的贡献
只提供摘要形式。本文对同时激发激子和连续态的GaAs-AlGaAs量子阱的超快瞬态四波混频(TFWM)进行了实验和理论研究。最近在半导体上进行的TFWM实验显示,当超快激光脉冲同时激发离散激子态和连续激子态时,得到了意想不到的结果。作为延迟的函数,信号的衰减明显快于激子的消相时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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