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Intersubband optical nonlinearity and bistable behavior of semiconductor superlattices

✍ Scribed by Guo-zhong Zhao; Shao-hua Pan

Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
263 KB
Volume
21
Category
Article
ISSN
0749-6036

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✦ Synopsis

The optical nonlinearity and bistability (OB) induced by intersubband transitions (ISBTs) in semiconductor superlattices are studied by means of the Kronig-Penney model and the density-matrix method. The OB state equation in a Fabry-Perot configuration is derived. It is shown that the ISBT-induced OB can be realized over a wide frequency range, and its bistable domain and hysteresis loop are much larger than those of a two-level system. Numerical illustration of the OB behavior in a GaAs/Al V Ga \V As superlattice is also given.

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