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Simplified theory of optical nonlinearities in spin-polarized semiconductors

Joshua, Arjun and Venkataraman, V (2009) Simplified theory of optical nonlinearities in spin-polarized semiconductors. In: Journal Of Physics-Condensed Matter, 21 (44).

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Official URL: http://www.iop.org/EJ/abstract/0953-8984/21/44/445...

Abstract

The spin degree of freedom is largely disregarded in existing theories of the density-dependent optical properties of an interacting electron-hole plasma in quasiequilibrium. Here, we extended the pair equation, which is applicable to a bulk semiconductor at elevated temperatures, to calculate optical nonlinearities due to a spin-polarized plasma. We obtained agreement with recent circular dichroism data in laser-excited GaAs by using the plasma density alone as the fitting parameter. The simplicity of our theory, based on the analytical pair-equation formula, makes it ideal for conveniently modelling absorption in a carrier spin-polarized semiconductor.

Item Type: Journal Article
Additional Information: Copyright for this article belongs to Institute Of Physics.
Department/Centre: Division of Physical & Mathematical Sciences > Physics
Date Deposited: 03 Jan 2010 09:14
Last Modified: 19 Sep 2010 05:52
URI: http://eprints.iisc.ernet.in/id/eprint/24913

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