Optical nonlinearities due to long-lived electron-hole plasmas

Philip Dawson; Ian Galbraith; Alicia I. Kucharska; C. Thomas Foxon

doi:10.1117/12.24555

1 February 1991 Optical nonlinearities due to long-lived electron-hole plasmas

Philip Dawson, Ian Galbraith, Alicia I. Kucharska, C. Thomas Foxon

Proceedings Volume 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications; (1991) https://doi.org/10.1117/12.24555
Event: Physical Concepts of Materials for Novel Optoelectronic Device Applications, 1990, Aachen, Germany

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.

Citation Download Citation

Philip Dawson, Ian Galbraith, Alicia I. Kucharska, and C. Thomas Foxon "Optical nonlinearities due to long-lived electron-hole plasmas", Proc. SPIE 1362, Physical Concepts of Materials for Novel Optoelectronic Device Applications II: Device Physics and Applications, (1 February 1991); https://doi.org/10.1117/12.24555

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