Nonlinear optical absorption in separate confinement multi-quantum-well structures due to spatial band bending
- 15 July 1994
- journal article
- research article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 76 (2) , 1184-1186
- https://doi.org/10.1063/1.358464
Abstract
We report on nonlinear optical absorption in InGaAs/InGaAsP separate confinement multiple‐quantum‐well (SCMQW) structures based on charge‐carrier induced band bending. Carrier induced localization and related changes in absorption strength due to spatial separation of electrons and holes are utilized to design SCMQW structures with a new type of optical nonlinearity. Experimentally, we observe strong changes in optical absorption with increasing excitation power. Compared to exciton bleaching, the new nonlinearity dominates at low carrier densities.This publication has 7 references indexed in Scilit:
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