https://doi.org/10.1051/epjconf/202328707020
Radio-frequency enabled comb in ring Quantum Cascade Lasers
Institute for Quantum Electronics, Swiss Federal Institute of Technology (ETH) Zürich, Auguste-Piccard-Hof 1, 8093 Zürich
* Corresponding author: iheckelmann@phys.ethz.ch
Published online: 18 October 2023
Frequency combs (FC) generated by quantum cascade lasers (QCLs) are a promising tool for precision spectroscopy and gas sensing. Recently, ring QCLs have emerged as a new platform for generating FC with unique advantages over Fabry-Perot geometry. While the bandwidth of such Fabry-Perot devices is determined by the device geometry and dispersion, radio-frequency injected devices with circular geometry enable the exploitation of the full gain bandwidth in a controlled manner. Together with this platform, a predictive analytical model that shows excellent agreement with the experimental data was developed. Our results pave the way for a new approach for frequency comb generation based on fast-gain saturation.
© The Authors, published by EDP Sciences, 2023
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
