22 May 2015 High power MWIR quantum cascade lasers and their use in intra-cavity THz room temperature generation
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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, Mariano Troccoli, Xiaojun Wang, Xiaojun Wang, Jenyu Fan, Jenyu Fan, Seungyong Jung, Seungyong Jung, Aiting Jiang, Aiting Jiang, Yifan Jiang, Yifan Jiang, Karun Vijayraghavan, Karun Vijayraghavan, Mikhail A. Belkin, 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); doi: 10.1117/12.2178098; https://doi.org/10.1117/12.2178098
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