Optical saturation of intersubband absorption in semiconductor superlattices
- 15 October 1991
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 44 (15), 8165-8169
- https://doi.org/10.1103/physrevb.44.8165
Abstract
The third-order nonlinear intersubband absorption in superlattices is studied theoretically by means of a general formalism of the Kronig-Penney model given recently. It is shown that there is a general relation between the tunnel bandwidth and the minimum optical saturation intensity. The physical origin of this relation is analyzed.Keywords
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