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Journal of the Optical Society of America B

Journal of the Optical Society of America B


  • Vol. 17, Iss. 1 — Jan. 1, 2000
  • pp: 128–137

Interaction of terahertz transients and broadband optical pulses in quantum wells

Steven Hughes and David S. Citrin  »View Author Affiliations

JOSA B, Vol. 17, Issue 1, pp. 128-137 (2000)

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A theoretical study of the interaction of intense terahertz transients and broadband optical pulses in quantum wells is presented. The approach is based on a numerical solution of the anisotropic semiconductor Bloch equations and includes, self-consistently, both continuum and excitonic effects. In the optical regime we recover the dynamic Franz–Keldysh effect showing THz sidebands in the optical absorption spectrum. In the THz regime we discern a series of harmonically generated upshifted THz transients. It is demonstrated pictorially that the upshifted transients are formed by the creation of highly anisotropic interfering, relative-motion electron–hole wave packets. We also investigate the influence of ellipticity of the driving field and chirped optical pulses. The field interaction with the quantum well is shown to be highly nonperturbative for typical free-electron laser fields. A series of propagating charge-carrier wave packets are analyzed, and a connection is made to analogies in the high-field physics of atomic ensembles.

© 2000 Optical Society of America

OCIS Codes
(140.2600) Lasers and laser optics : Free-electron lasers (FELs)
(250.0250) Optoelectronics : Optoelectronics
(300.6470) Spectroscopy : Spectroscopy, semiconductors
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.7130) Ultrafast optics : Ultrafast processes in condensed matter, including semiconductors

Steven Hughes and David S. Citrin, "Interaction of terahertz transients and broadband optical pulses in quantum wells," J. Opt. Soc. Am. B 17, 128-137 (2000)

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