High power MWIR quantum cascade lasers and their use in intra-cavity THz room temperature generation

Mariano Troccoli; Xiaojun Wang; Jenyu Fan; Seungyong Jung; Aiting Jiang; Yifan Jiang; Karun Vijayraghavan; Mikhail A. Belkin

doi:10.1117/12.2178098

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22 May 2015 High power MWIR quantum cascade lasers and their use in intra-cavity THz room temperature generation

Mariano Troccoli, Xiaojun Wang, Jenyu Fan, Seungyong Jung, Aiting Jiang, Yifan Jiang, Karun Vijayraghavan, Mikhail A. Belkin

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Proceedings Volume 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII; 94672G (2015) https://doi.org/10.1117/12.2178098
Event: SPIE Defense + Security, 2015, Baltimore, Maryland, United States

Abstract

In this paper we review our results on high power quantum cascade lasers in the mid- and long-wave infrared regions of the spectrum (4-12um). The specifications and characteristics of state-of-the-art QC lasers fabricated by MOCVD technology are illustrated, along with their key application requirements and potential issues for future improvements. Single emitter QC lasers in the Watt-class range are presented and analyzed. In addition, we explore the use of high power QCLs for THz generation at room temperature by non-linear mixing of high power mid-infrared beams in a monolithic intra-cavity design. The THz radiation so obtained is widely tunable by electrical injection. Experimentally, we demonstrate ridge waveguide single mode devices electrically tunable between 3.44 and 4.02 THz.

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Mariano Troccoli, Xiaojun Wang, Jenyu Fan, Seungyong Jung, Aiting Jiang, Yifan Jiang, Karun Vijayraghavan, and Mikhail A. Belkin "High power MWIR quantum cascade lasers and their use in intra-cavity THz room temperature generation", Proc. SPIE 9467, Micro- and Nanotechnology Sensors, Systems, and Applications VII, 94672G (22 May 2015); https://doi.org/10.1117/12.2178098

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