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Proceedings Paper

28-dB gain mid-infrared optical amplification using resonant quantum cascade laser optical amplifier
Author(s): Xing Chen; Dingkai Guo; David Shyu; Liwei Cheng; Fow-Sen Choa; Sudhir Trivedi
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Paper Abstract

We report the operation of quantum cascade lasers (QCLs) as a mid-infrared photodetector as well as a tunable resonant amplifying detector. When biased at low voltage or without bias, QCL works as a photoconductive or photovoltaic detector. When biased near threshold, QCL operates as a tunable resonant amplifying detector. The detected signal reaches its maximum when the QCL bias is close to its threshold. The maximum signal power is over 28 dB higher compared with the case without bias. These interesting mid-IR detection and amplification characteristics of QCL gain material can help with mid-IR optical filtering and photonics integration.

Paper Details

Date Published: 8 February 2012
PDF: 6 pages
Proc. SPIE 8277, Novel In-Plane Semiconductor Lasers XI, 82771W (8 February 2012); doi: 10.1117/12.905521
Show Author Affiliations
Xing Chen, Univ. of Maryland, Baltimore County (United States)
Dingkai Guo, Univ. of Maryland, Baltimore County (United States)
David Shyu, Univ. of Maryland, Baltimore County (United States)
Liwei Cheng, Univ. of Maryland, Baltimore County (United States)
Fow-Sen Choa, Univ. of Maryland, Baltimore County (United States)
Sudhir Trivedi, Brimrose Corp. of America (United States)


Published in SPIE Proceedings Vol. 8277:
Novel In-Plane Semiconductor Lasers XI
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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