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Simplified theory of optical nonlinearities in spin-polarized bulk GaAs

Joshua, Arjun and Venkataraman, V (2007) Simplified theory of optical nonlinearities in spin-polarized bulk GaAs. In: 14th International Workshop on the Physics of Semiconductor Devices, DEC 17-20, 2007, Mumbai.

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Abstract

Apart from their intrinsic physical interest, spin-polarized many-body effects are expected to be important to the working of spintronic devices. A vast literature exists on the effects of a spin-unpolarized electron-hole plasma on the optical properties of a semiconductor. Here, we include the spin degree of freedom to model optical absorption of circularly polarized light by spin-polarized bulk GaAs. Our model is easy to implement and does not require elaborate numerics, since it is based on the closed-form analytical pair-equation formula that is valid in 3d. The efficacy of our approach is demonstrated by a comparison with recent experimental data.

Item Type: Conference Paper
Additional Information: Copyright 2007 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
Keywords: Many-body effects,Optical properties of III-V semiconductors ,Pump-probe spectroscopy,Spintronics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 11 Jun 2010 08:51
Last Modified: 19 Sep 2010 06:00
URI: http://eprints.iisc.ernet.in/id/eprint/27345

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