Presentation + Paper
15 March 2023 Progress in passively mode-locked interband cascade laser frequency combs for on-chip mid-infrared spectroscopy
M. Povolotskyi, A. J. Grede, C. L. Canedy, M. Kim, C. S. Kim, C. D. Merritt, W. W. Bewley, L. A. Sterczewski, M. Bagheri, C. Frez, J. R. Meyer, I. Vurgaftman
Author Affiliations +
Abstract
Frequency combs based on mid-infrared cascade lasers have been studied both experimentally and theoretically in recent years. So far only FM combs with quasi-cw output have been reported for interband cascade lasers (ICLs). We discuss the parameters that need to be achieved to realize passive mode locking in ICLs. The results are obtained from a comprehensive numerical model based on the wavevector-resolved Bloch equations coupled to the one-dimensional wave equation. We find that the design of the saturable absorber, in particular the carrier extraction time and length, is very important, while passive mode locking should already be achievable for the experimentally demonstrated values of group velocity dispersion. The leakage into the high-index GaSb substrate should also be controlled via the waveguide design.
Conference Presentation
© (2023) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Povolotskyi, A. J. Grede, C. L. Canedy, M. Kim, C. S. Kim, C. D. Merritt, W. W. Bewley, L. A. Sterczewski, M. Bagheri, C. Frez, J. R. Meyer, and I. Vurgaftman "Progress in passively mode-locked interband cascade laser frequency combs for on-chip mid-infrared spectroscopy", Proc. SPIE 12430, Quantum Sensing and Nano Electronics and Photonics XIX, 1243004 (15 March 2023); https://doi.org/10.1117/12.2649052
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KEYWORDS
Dispersion

Mode locking

Quantum cascade lasers

Frequency combs

Gallium antimonide

Mid-IR

Design and modelling

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