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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: G. I. Stegeman
  • Vol. 22, Iss. 12 — Dec. 1, 2005
  • pp: 2715–2727

Chirped-pulse control of carriers in semiconductors: the role of many-body effects

Boris D. Fainberg, B. Levinsky, and V. A. Gorbunov  »View Author Affiliations


JOSA B, Vol. 22, Issue 12, pp. 2715-2727 (2005)
http://dx.doi.org/10.1364/JOSAB.22.002715


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Abstract

The possibility of realizing adiabatic rapid passage (ARP) with an intense chirped-pulse excitation (a concept well known in molecular systems) in direct-gap semiconductors is studied. Based on the semiconductor Bloch equations, the analysis shows that, in spite of complications due to band structure, signatures of ARP accompanied by an intrapulse pump-dump process (IPDP) should be observable in the dependence of the carriers’ density on the chirp rate in the frequency domain. The bandgap shrinkage, which is the main many-body effect, gives the dominant contribution to the asymmetry of this dependence on the chirp sign. We show that the bandgap shrinkage enlarges the carriers’ density and makes a major impact on the interplay of ARP with IPDP, enhancing ARP (suppressing IPDP) for positive chirped-pulse excitation and suppressing ARP (enhancing IPDP) for negative chirped-pulse excitation.

© 2005 Optical Society of America

OCIS Codes
(320.1590) Ultrafast optics : Chirping
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

ToC Category:
Ultrafast Optics

Citation
Boris D. Fainberg, B. Levinsky, and V. A. Gorbunov, "Chirped-pulse control of carriers in semiconductors: the role of many-body effects," J. Opt. Soc. Am. B 22, 2715-2727 (2005)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-22-12-2715

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