Abstract
Recent efforts have been paid to elevate the operating temperature of Type II superlattice Mid Infrared photon detectors. Using M-structure superlattice, novel device architectures have been developed, resulting in significant improvement of the device performances. In this paper, we will compare different photodetector architectures and discuss the optimization scheme which leads to almost one order of magnitude of improvement to the electrical performance. At 150K, single element detectors exhibit a quantum efficiency above 50%, and a specific detectivity of 1.05x1012 cm.Hz1/2/W. BLIP operation with a 300K background and 2π FOV can be reached with an operating temperature up to 130K. High quality focal plane arrays were demonstrated with a noise equivalent temperature difference (NEDT) of 11mK up to 130K. Human body imaging is achieved at 165K with NEDT of 150mK.
Original language | English (US) |
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Title of host publication | Infrared Technology and Applications XXXVIII |
Publisher | SPIE |
Volume | 8353 |
ISBN (Print) | 9780819490315 |
DOIs | |
State | Published - Jan 1 2012 |
Event | 38th Conference on Infrared Technology and Applications - Baltimore, MD, United States Duration: Apr 23 2012 → Apr 27 2012 |
Other
Other | 38th Conference on Infrared Technology and Applications |
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Country/Territory | United States |
City | Baltimore, MD |
Period | 4/23/12 → 4/27/12 |
Keywords
- InAs/GaSb
- Infrared detector
- MWIR
- Photodetectors
- Tunneling Barrier
- Type-II superlattice
ASJC Scopus subject areas
- Applied Mathematics
- Computer Science Applications
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics