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Proceedings Paper

Nonlinear intersubband optical absorption of asymmetric semiconductor quantum wells pumped by terahertz and infrared fields
Author(s): Hai-Yan Zhu; Tong-Yi Zhang; Wei Zhao
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Paper Abstract

We investigate the conduction intersubband linear response of a n-type quantum well driven by one or two infrared optical fields with arbitrary strengths. The fields couple the third subband to the second energy subband and the ground subband, forming a Λ system. We investigate the dependences of the absorption spectrum on the pump field strengths. The results for the equal Rabi frequencies can be understood in terms of quantum coherence processes of the intersubband transitions, such as coherent population trapping, and electromagnetically induced transparency. The effects of different Rabi frequencies on the absorption spectrum due to fields are also discussed.

Paper Details

Date Published: 4 August 2009
PDF: 7 pages
Proc. SPIE 7385, International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications, 73851Z (4 August 2009); doi: 10.1117/12.835726
Show Author Affiliations
Hai-Yan Zhu, Xi'an Institute of Optics and Precision Mechanics (China)
Graduate School of the CAS (China)
Tong-Yi Zhang, Xi'an Institute of Optics and Precision Mechanics (China)
Wei Zhao, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 7385:
International Symposium on Photoelectronic Detection and Imaging 2009: Terahertz and High Energy Radiation Detection Technologies and Applications
X.-C. Zhang; James M. Ryan; Cun-lin Zhang; Chuan-xiang Tang, Editor(s)

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