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Proceedings Paper

Optical nonlinearities due to long-lived electron-hole plasmas
Author(s): Philip Dawson; Ian Galbraith; Alicia I. Kucharska; C. Thomas Foxon
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Paper Abstract

By choice of appropriate layer thicknesses it is possible to produce GaAs/AlAs quantum well structures in which the lowest energy electron and hole wavefunctions are localised in spatially separate layers. As the low temperature radiative lifetime ol such a structure is long (ps) it is possible to observe cw optical nonlinearities at relatively low power densities. In this paper results of optical pump/probe experiments will be presented from a range of standard type II structures along with results from a new type of structure that enhances the spatial separation of the electron/hole population.

Paper Details

Date Published: 1 February 1991
PDF: 7 pages
Proc. SPIE 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications, (1 February 1991); doi: 10.1117/12.24555
Show Author Affiliations
Philip Dawson, Philips Research Labs. (United Kingdom)
Ian Galbraith, Philips Research Labs. (United Kingdom)
Alicia I. Kucharska, Philips Research Labs. (United Kingdom)
C. Thomas Foxon, Philips Research Labs. (United Kingdom)


Published in SPIE Proceedings Vol. 1362:
Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications

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