Modulation of the second-order nonlinear tensor components in multiple-quantum-well structures

In this paper, we present experimental results which demonstrate that quantum-well intermixing techniques can be used to modulate the magnitude of the second-order nonlinear coefficient /spl chi//sup (2)/. Impurity-free vacancy disordering with SiO/sub 2/ and Ga/sub 2/O/sub 3/ caps was used to modul...

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Bibliographic Details
Published in:IEEE journal of selected topics in quantum electronics 1998-07, Vol.4 (4), p.695-700
Main Authors: Aitchison, J.S., Street, M.W., Whitbread, N.D., Hutchings, D.C., Marsh, J.H., Kennedy, G.T., Sibbett, W.
Format: Article
Language:English
Subjects:
Birefringence
Frequency conversion
Nonlinear optics
Optical frequency conversion
Optical waveguides
Quantum cascade lasers
Quantum well devices
Quantum wells
Semiconductor lasers
Tensile stress
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Summary:In this paper, we present experimental results which demonstrate that quantum-well intermixing techniques can be used to modulate the magnitude of the second-order nonlinear coefficient /spl chi//sup (2)/. Impurity-free vacancy disordering with SiO/sub 2/ and Ga/sub 2/O/sub 3/ caps was used to modulate the position of the band edge and hence, the magnitude of /spl chi//sub eff//sup (2)/. Using a coupled quantum-well structure we were able to demonstrate modulation of the d/sub 33/ tensor components associated with the asymmetric structure and of the d/sub 14/ component associated with the bulk crystal structure.
ISSN:1077-260X
1558-4542
DOI:10.1109/2944.720481