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Abstracts
We present the results of a new excitonic formalism for the treatment of ultrafast dynamics in asymmetric semiconductor multiple quantum well structures. The method is infinite order in the optical field, with truncation of the infinite hierarchy of dynamical equations being accomplished via a factorization of six-particle correlation functions into a product of two- and four-particle ones. We use this formalism to calculate the THz emission and degenerate four-wave mixing signals from biased semiconductor superlattices under different excitation conditions. We present a number of density-dependent effects that demonstrate the central role that the intraband polarization plays in determining and modifying the nonlinear ultrafast response of the system.
Discipline
- 42.65.Re: Ultrafast processes; optical pulse generation and pulse compression(for ultrafast spectroscopy, see 78.47.J-; for ultrafast magnetization dynamics, see 75.78.Jp)
- 78.67.-n: Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures(for magnetic properties of nanostructures, see 75.75.-c; for electronic transport in nanoscale structures, see 73.63.-b; for mechanical properties of nanoscale systems, see 62.25.-g)
Journal
Year
Volume
Issue
Pages
56-64
Physical description
Dates
published
2005-01
received
2004-08-22
Contributors
author
- Department of Physics, Queen's University, Kingston, ON, K7L 3N5, Canada
author
- Department of Physics, Lakehead University, Thunder Bay, ON, P7B 5E1, Canada
author
- Department of Physics, Queen's University, Kingston, ON, K7L 3N5, Canada
author
- Institut für Angewandte Photophysik, Technische Universität Dresden, 01062 Dresden, Germany
References
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Document Type
Publication order reference
Identifiers
YADDA identifier
bwmeta1.element.bwnjournal-article-appv107n106kz