Electrooptic effects in GaAs-AlGaAs narrow coupled quantum wells

The linear and quadratic electrooptic coefficients in narrow single and strongly coupled GaAs-Al/sub x/Ga/sub 1-x/As quantum wells have been measured. The quadratic electrooptic effect is enhanced over that of conventional square quantum wells for both TE and TM polarization in all the structures co...

Full description

Saved in:
Bibliographic Details
Published in:IEEE journal of quantum electronics 2001-07, Vol.37 (7), p.897-904
Main Authors: Earnshaw, M.P., Allsopp, D.W.E.
Format: Article
Language:English
Subjects:
Absorption
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Doppler effect
Electrooptic effects
Electrooptical effects
Electrooptics
Exact sciences and technology
Excitation
Excitons
Iii-v semiconductors
Joining
Optical modulation
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of bulk materials and thin films
Optical properties of specific thin films
Optical refraction
Optical variables control
Origins
Phase modulation
Physics
Polarization
Quantum electronics
Quantum wells
Red shift
Switches
Tellurium
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The linear and quadratic electrooptic coefficients in narrow single and strongly coupled GaAs-Al/sub x/Ga/sub 1-x/As quantum wells have been measured. The quadratic electrooptic effect is enhanced over that of conventional square quantum wells for both TE and TM polarization in all the structures considered, by up to six times in the case of 2-nm-wide GaAs-Al/sub 0.2/Ga/sub 0.8/As strongly coupled quantum wells. The origin of the enhanced quadratic electrooptic effect was found to correlate with a larger red shift in the absorption edge exciton and strong Coulombic coupling of the bound exciton states with the quasi-continua.
ISSN:0018-9197
1558-1713
DOI:10.1109/3.929589