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Proceedings Paper

Infrared imaging based on quantum dot optical phase modulation
Author(s): Gang Chen; Tao Yang; Chen Peng; Rainer Martini
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Paper Abstract

In the past two decades, there is an increasing interest in developing new infrared photodetectors based on novel nanostructures, such as quantum well infrared photodetector (QWIP) and quantum dot infrared photodetector (QDIP). However, the commonly used electrical read-out approach limits the resolution of QWIP/QDIP infrared imaging to around 1 mega pixel. In this paper, we reported our theoretical study on an all-optical readout based on quantum dot phase modulation, which provides a new way for the intersubband infrared detection by measuring the phase change in the transmitted interband near infrared (NIR) and allows a high-resolution middle infrared (MIR) or far infrared (FIR) imaging. Utilizing the long life time in the quantum dots, the intersubband infrared resonant light is used to control the interband NIR resonant light phase. An infrared image can be converted into a visible or near infrared image, which can be easily captured with a high resolution CCD camera. It provides a new way to obtain a high resolution infrared image.

Paper Details

Date Published: 8 September 2011
PDF: 5 pages
Proc. SPIE 8193, International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications, 81933R (8 September 2011); doi: 10.1117/12.900858
Show Author Affiliations
Gang Chen, Chongqing Univ. (China)
Tao Yang, Stevens Institute of Technology (United States)
Chen Peng, Chongqing Univ. (China)
Rainer Martini, Stevens Institute of Technology (United States)


Published in SPIE Proceedings Vol. 8193:
International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications
Jeffery J. Puschell; Junhao Chu; Haimei Gong; Jin Lu, Editor(s)

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