Thermal investigation of mid-infrared quantum cascade lasers under quasi-continuous-wave operations

Xing Chen; Liwei Cheng; Dingkai Guo; Fow-Sen Choa; Terry Worchesky

doi:10.1117/12.875968

16 February 2011 Thermal investigation of mid-infrared quantum cascade lasers under quasi-continuous-wave operations

Xing Chen, Liwei Cheng, Dingkai Guo, Fow-Sen Choa, Terry Worchesky

Proceedings Volume 7953, Novel In-Plane Semiconductor Lasers X; 795320 (2011) https://doi.org/10.1117/12.875968
Event: SPIE OPTO, 2011, San Francisco, California, United States

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.

Citation Download Citation

Xing Chen, Liwei Cheng, Dingkai Guo, Fow-Sen Choa, and Terry Worchesky "Thermal investigation of mid-infrared quantum cascade lasers under quasi-continuous-wave operations", Proc. SPIE 7953, Novel In-Plane Semiconductor Lasers X, 795320 (16 February 2011); https://doi.org/10.1117/12.875968

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