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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Editor: Henry M. Van Driel
  • Vol. 24, Iss. 3 — Mar. 1, 2007
  • pp: 664–670

Inhomogeneous dephasing of heavy-hole and light-hole exciton coherences in GaAs quantum wells

Amelia G. V. Spivey and Steven T. Cundiff  »View Author Affiliations

JOSA B, Vol. 24, Issue 3, pp. 664-670 (2007)

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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 quantum beats between the LH and the HH exciton coherences changes as a function of first–second pulse delay. A theoretical model for the TFWM signal, including exciton dephasing rates that vary with frequency across the inhomogeneous linewidth, reproduces the observations. The inclusion of inhomogeneous dephasing also improves the correspondence between theory and experiment when data as a function of both first–second and second–third pulse delays are simultaneously examined.

© 2007 Optical Society of America

OCIS Codes
(190.4380) Nonlinear optics : Nonlinear optics, four-wave mixing
(190.5970) Nonlinear optics : Semiconductor nonlinear optics including MQW
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:

Original Manuscript: August 10, 2006
Revised Manuscript: October 3, 2006
Manuscript Accepted: October 5, 2006
Published: February 15, 2007

Amelia G. V. Spivey and Steven T. Cundiff, "Inhomogeneous dephasing of heavy-hole and light-hole exciton coherences in GaAs quantum wells," J. Opt. Soc. Am. B 24, 664-670 (2007)

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