Abstract
Quantum cascade lasers (QLCs) are semiconductor devices, which are the dominant light source in the mid-IR part of the electromagnetic spectrum [1], and have recently been demonstrated to operate as frequency combs [2]. Characteristics of the comb operation are a broad, phase-locked optical spectrum of equidistant modes, and a strong narrow radio frequency (RF) beatnote, that is generated from the beating of those modes. One unique property of the QCL is the short upper-state lifetime, which allows the coupling between the injected current and the beatnote at the roundtrip frequency.
© 2019 IEEE
PDF ArticleMore Like This
P. Taeschler, A. Forrer, D. Stark, T. Olariu, M. Beck, J. Faist, and G. Scalari
cb_9_4 The European Conference on Lasers and Electro-Optics (CLEO/Europe) 2019
Jie Liu, Phil Skochinski, Lawrence Hughes, Yamac Dikmelik, Kevin Lascola, and Gerard Wysocki
SM1J.4 CLEO: Science and Innovations (CLEO:S&I) 2023
Baichuan Huang, Jie Liu, Nicholas Kosan, Yamac Dikmelik, Kevin Lascola, and Gerard Wysocki
STh3Q.5 CLEO: Science and Innovations (CLEO:S&I) 2023