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Proceedings Paper

Thermal investigation of mid-infrared quantum cascade lasers under quasi-continuous-wave operations
Author(s): Xing Chen; Liwei Cheng; Dingkai Guo; Fow-Sen Choa; Terry Worchesky
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Paper Abstract

The temperature effect on the characteristics of strain-balanced mid-infrared quantum cascade lasers is theoretically investigated and compared to experimental results. Our theoretical model simulates the temperature dependence of modal gain, current threshold density, and optical output power of a QCL at pulsed, continuous wave (CW), and quasi-CW operation conditions. Simulation results show that QCLs operated at quasi-CW driving condition expresses much lower laser core temperature than CW mode while generates comparable or even higher average power than CW mode. The model can be used to predict the optimum driving condition in order to generate maximum average output power.

Paper Details

Date Published: 16 February 2011
PDF: 8 pages
Proc. SPIE 7953, Novel In-Plane Semiconductor Lasers X, 795320 (16 February 2011); doi: 10.1117/12.875968
Show Author Affiliations
Xing Chen, Univ. of Maryland, Baltimore County (United States)
Liwei Cheng, Univ. of Maryland, Baltimore County (United States)
Dingkai Guo, Univ. of Maryland, Baltimore County (United States)
Fow-Sen Choa, Univ. of Maryland, Baltimore County (United States)
Terry Worchesky, Univ. of Maryland, Baltimore County (United States)

Published in SPIE Proceedings Vol. 7953:
Novel In-Plane Semiconductor Lasers X
Alexey A. Belyanin; Peter M. Smowton, Editor(s)

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