Linear and nonlinear intersub-band optical absorption in diffusion-induced AlGaAs/GaAs quantum well at far IR wavelengths

23 April 1992

journal article
Published by Institution of Engineering and Technology (IET) in Electronics Letters

Vol. 28 (9) , 885-886
https://doi.org/10.1049/el:19920558

Abstract

The effect of interdiffusion on the intersub-band absorption coefficient of AlGaAs/GaAs single quantum well structures has been analysed, based on the linear and nonlinear contributions from the first and third order susceptibilities, respectively. The results show that interdiffusion may be used to tune the intersub-band absorption over a large wavelength range of tens of micrometres together with a uniform absorption coefficient.

Keywords

SQW
SINGLE QUANTUM WELL STRUCTURES
FIRST ORDER SUSCEPTIBILITIES
NONLINEAR OPTICAL ABSORPTION
LINEAR OPTICAL ABSORPTION
INTERSUB-BAND ABSORPTION
UNIFORM ABSORPTION COEFFICIENT
ALGAAS-GAAS
FAR IR WAVELENGTHS
THIRD ORDER SUSCEPTIBILITIES
INTERDIFFUSION

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