Voltage tunable two-color infrared detection using semiconductor superlattices.

Journal Article · Fri Aug 01 00:00:00 EDT 2003 · Proposed for publication in Applied Physics Letters.

DOI:https://doi.org/10.1063/1.1635981· OSTI ID:1005090

Majumdar, Amlan ^[1]; Choi, Kyung K ^[2]; Tsui, Daniel Chee ^[1]; Reno, John Louis

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1. Princeton University, Princeton, NJ
2. U. S. Army Research Laboratory, Adelphi, MD

We demonstrate a voltage tunable two-color quantum-well infrared photodetector (QWIP) that consists of multiple periods of two distinct AlGaAs/GaAs superlattices separated by AlGaAs blocking barriers on one side and heavily doped GaAs layers on the other side. The detection peak switches from 9.5 {micro}m under large positive bias to 6 {micro}m under negative bias. The background-limited temperature is 55 K for 9.5 {micro}m detection and 80 K for 6 {micro}m detection. We also demonstrate that the corrugated-QWIP geometry is suitable for coupling normally incident light into the detector.

• Research Organization: Sandia National Laboratories (SNL), Albuquerque, NM, and Livermore, CA (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 1005090
• Report Number(s): SAND2003-3210J; TRN: US201105%%188
• Journal Information: Proposed for publication in Applied Physics Letters., Vol. 83, Issue 25; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
DETECTION
GEOMETRY
PHOTODETECTORS
SUPERLATTICES
SWITCHES