TY - GEN
T1 - Infrared imaging based on quantum dot optical phase modulation
AU - Chen, Gang
AU - Yang, Tao
AU - Peng, Chen
AU - Martini, Rainer
PY - 2011
Y1 - 2011
N2 - 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.
AB - 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.
KW - All-optical Modulation
KW - Infrared Imaging
KW - Phase Modulation
KW - Quantum Dot
UR - http://www.scopus.com/inward/record.url?scp=80053634658&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=80053634658&partnerID=8YFLogxK
U2 - 10.1117/12.900858
DO - 10.1117/12.900858
M3 - Conference contribution
AN - SCOPUS:80053634658
SN - 9780819488343
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - International Symposium on Photoelectronic Detection and Imaging 2011
T2 - International Symposium on Photoelectronic Detection and Imaging 2011: Advances in Infrared Imaging and Applications
Y2 - 24 May 2011 through 24 May 2011
ER -