Journal
SUPERLATTICES AND MICROSTRUCTURES
Volume 52, Issue 2, Pages 183-192Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.spmi.2012.04.023
Keywords
Quantum well; Nonlinear optical properties
Categories
Funding
- National Natural Science Foundation of China [61178003]
- Guangdong Provincial Department of Science and Technology [2011B0 10400006]
- Science and Information Technology Bureau of Guangzhou [11C62010688]
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Linear and nonlinear intersubband optical absorption and refractive index change in asymmetrical semi-exponential quantum wells are theoretically investigated within the framework of the compact-density-matrix approach and iterative method. The wave functions are obtained by using the effective mass approximation. The energy levels are obtained by numerical method. It is found that the optical absorption coefficients and refractive index changes are strongly affected not only by sigma and U-0, but also by the incident optical intensity. (C) 2012 Elsevier Ltd. All rights reserved.
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