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Journal article

Transient optical response of quantum well excitons to intense narrowband terahertz pulses

By Jameson, A. D.1; Tomaino, J. L.1; Lee, Yun-Shik1; Prineas, J. P.2; Steiner, J. T.3; Kira, M.3; Koch, S. W.3

From

Oregon State University, Department of Physics, , Corvallis, Oregon 97331-6507, USA1

University of Iowa, Department of Physics and Astronomy, , Iowa City, Iowa 52242, USA2

Philipps University, Department of Physics and Material Sciences Center, , 35032 Marburg, Germany3

Intense narrowband terahertz pulses are used to modify excitonic transitions in semiconductor quantum wells and to study the dephasing properties of the optically dark 2p states. Time-resolved terahertz-pump and optical-probe measurements exhibit strong nonlinear optical transients of the 1s heavy-hole and light-hole exciton resonances when the terahertz radiation is tuned near the 1s to 2p intraexciton transition.

A microscopic theory attributes the observed nonlinearities to Rabi sidebands showing that the 2p-dephasing time is three times that of the 1s-state.

Language: Undetermined
Publisher: American Institute of Physics
Year: 2009
ISSN: 10773118 and 00036951
Types: Journal article
DOI: 10.1063/1.3265735

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