NDLI: Mid-Infrared Interband Cascade Photodetectors With Different Absorber Designs

Content Provider	IEEE Xplore Digital Library
Author	Zhao-Bing Tian Krishna, S.
Copyright Year	1965
Abstract	We report an experimental investigation on the influence of absorber thicknesses in mid-infrared interband cascade (IC) photodetectors. The electrical and optical properties of these five-stage IC detectors are characterized in detail over a wide operating temperature range. The IC detectors are operational above 400 K under zero bias, with a 50% cutoff of 4.56 μm and external quantum efficiency (single pass, no antireflection coating) up to 10.1% at room temperature. The dark current in the IC detectors is at 10 μA/cm² at -10 mV, with a Johnson-limited D* of 1.10 × 10¹¹ Jones at 200 K. Our experimental results show that both the optical response and the noise performance in the quantum-engineered IC detectors improve with increased discrete absorber thicknesses. It is also suggested that the dark current in the IC detectors is determined by tunneling components at lower temperatures, and becomes diffusion-limited at higher temperatures.
Sponsorship	IEEE Lasers and Electro-Optics Society
Starting Page	1
Ending Page	5
Page Count	5
File Size	1562083
File Format	PDF
ISSN	00189197
Volume Number	51
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-01-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Integrated circuits Detectors Dark current Temperature Photodetectors Optical detectors Integrated optics type-II superlattices mid-infrared photodetectors quantum wells Mid-infrared
Content Type	Text
Resource Type	Article
Subject	Atomic and Molecular Physics, and Optics Condensed Matter Physics Electrical and Electronic Engineering

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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