8 February 2012 28-dB gain mid-infrared optical amplification using resonant quantum cascade laser optical amplifier
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Proceedings Volume 8277, Novel In-Plane Semiconductor Lasers XI; 82771W (2012) https://doi.org/10.1117/12.905521
Event: SPIE OPTO, 2012, San Francisco, California, United States
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.
© (2012) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xing Chen, Dingkai Guo, David Shyu, Liwei Cheng, Fow-Sen Choa, Sudhir Trivedi, "28-dB gain mid-infrared optical amplification using resonant quantum cascade laser optical amplifier", Proc. SPIE 8277, Novel In-Plane Semiconductor Lasers XI, 82771W (8 February 2012); doi: 10.1117/12.905521; https://doi.org/10.1117/12.905521
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