TITLE

Nonlinear excitonic optical absorption in GaInAs/InP quantum wells

AUTHOR(S)
Fox, A. M.; Maciel, A. C.; Shorthose, M. G.; Ryan, J. F.; Scott, M. D.; Davies, J. I.; Riffat, J. R.
PUB. DATE
July 1987
SOURCE
Applied Physics Letters;7/6/1987, Vol. 51 Issue 1, p30
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have studied the saturation of optical absorption in GaInAs/InP quantum wells at room temperature. Using optical excitation from a tunable cw Co:MgF2 laser, we find a saturation intensity of 70 W cm-2 when exciting resonantly at the n=1 heavy-hole exciton, and we deduce values of the nonlinear absorption and refraction coefficients -60 cm W-1 and -0.3 cm2 kW-1, respectively. The saturation intensity in the quantum well is significantly lower than in bulk GaInAs, and also in GaAs quantum wells.
ACCESSION #
9823434

 

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