Inhomogeneous dephasing of heavy-hole and light-hole exciton coherences in GaAs quantum wells
作者： Amelia G. V. Spivey , Steven T. Cundiff
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摘要: Three-beam time-integrated transient four-wave mixing (TFWM) is used to probe both light-hole (LH) and heavy-hole (HH) exciton coherences in weakly disordered GaAs quantum wells. The period of the beats between LH HH changes as a function first-second pulse delay. A theoretical model for TFWM signal, including dephasing rates that vary with frequency across inhomogeneous linewidth, reproduces observations. inclusion also improves correspondence theory experiment when data second-third delays are simultaneously examined.
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