Title :
Enhanced bandgap resonant nonlinear susceptibility in quantum-well heterostructures
Author_Institution :
British Telecom Research Laboratories, Ipswich, UK
Abstract :
Calculation shows that the bandgap resonant nonlinear susceptibility in a multi-quantum-well structure can be a factor of approximately 2 greater than in the bulk. The calculation uses the mechanism of blocking of band-to-band transitions, likely to be present in materials of interest for advanced optical-fibre communication systems.
Keywords :
nonlinear optical susceptibility; optical communication equipment; p-n heterojunctions; semiconductors; band-to-band transitions; bandgap resonant nonlinear susceptibility; blocking mechanism; energy gap; optical-fibre communication systems; quantum-well heterostructures; semiconductor band structure;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19830093
