Journal
IEEE PHOTONICS TECHNOLOGY LETTERS
Volume 21, Issue 1-4, Pages 85-87Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LPT.2008.2008629
Keywords
Nonlinear optics; optical Kerr effect; quantum-well intermixing (QWI); semiconductor superlattice
Funding
- U.K. Engineering and Physical Science Research Council
- Natural Science and Engineering Research Council of Canada
- NUST SEECS
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The optical Kerr effect was measured by observing self-phase modulation in GaAs-AlGaAs superlattice-core waveguides modified by ion-implantation quantum-well intermixing. The band-gap energy was shifted by 68 nut for an implantation dose of 0.5 X 10(13) cm(-2) and annealing temperature of 775 degrees C. The Kerr effect was suppressed by up to 71% in the transverse-electric polarization after intermixing. A reduced polarization dependence of the self-phase modulation was observed after intermixing.
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