High power, room temperature, terahertz sources, and frequency comb based on difference-frequency generation at CQD

Manijeh Razeghi

doi:10.1117/12.2635322

30 September 2022 High power, room temperature, terahertz sources, and frequency comb based on difference-frequency generation at CQD

Manijeh Razeghi

Author Affiliations +

Proceedings Volume 12230, Terahertz Emitters, Receivers, and Applications XIII; 1223006 (2022) https://doi.org/10.1117/12.2635322
Event: SPIE Optical Engineering + Applications, 2022, San Diego, California, United States

Abstract

Quantum cascade laser (QCL) is becoming the leading laser source in the mid-infrared and terahertz range due to its rapid development in power, efficiency, and spectral covering range. Owing to its unique intersubband transition and fast carrier lifetime, QCL possesses strong nonlinear susceptibilities that makes it the ideal platform for a variety of nonlinear optical generations. Among this, terahertz (THz) source based on difference-frequency generation (DFG) and frequency comb based on four wave mixing effect are the most exciting phenomena which could potentially revolutionize spectroscopy in mid-infrared (mid-IR) and THz spectral range. In this paper, we will briefly discuss the recent progress of our research. This includes high power high efficiency QCLs, high power room temperature THz sources based on DFG-QCL, room temperature THz frequency comb, and injection locking of high-power QCL frequency combs. The developed QCLs are great candidates as next generation mid-infrared source for spectroscopy and sensing.

Conference Presentation

Citation Download Citation

Manijeh Razeghi "High power, room temperature, terahertz sources, and frequency comb based on difference-frequency generation at CQD", Proc. SPIE 12230, Terahertz Emitters, Receivers, and Applications XIII, 1223006 (30 September 2022); https://doi.org/10.1117/12.2635322

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