Journal article
Transient optical response of quantum well excitons to intense narrowband terahertz pulses
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 |
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Publisher: | American Institute of Physics |
Year: | 2009 |
ISSN: | 10773118 and 00036951 |
Types: | Journal article |
DOI: | 10.1063/1.3265735 |