Comb formation in ring Quantum Cascade Lasers under radio-frequency injection
Abstract
On-chip frequency combs have drawn increasing attention due to their wide possible range of applications in spectroscopy and the intriguing mechanisms that govern their formation [1]. In the molecular fingerprint region of the mid-infrared, Quantum Cascade Lasers (QCLs) provide a flexible platform for developing such combs with high output powers, small device footprints and extensive spectral coverage [2]. However, in the established frequency-modulated (FM) combs, the bandwidth of such a QCL frequency comb is limited by dispersion, gain curvature, losses and carrier lifetimes [3], and is thus determined by both active region design and fabrication. Radio-frequency (RF) injection allows for some degree of additional broadening of these combs, thereby providing a powerful way to tune the bandwidth and dynamics of QCLs [4]. Show more
Publication status
publishedExternal links
Book title
2023 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC)Pages / Article No.
Publisher
IEEEEvent
Organisational unit
03759 - Faist, Jérôme / Faist, Jérôme
Notes
Conference lecture held on June 29, 2023.More
Show all metadata
ETH Bibliography
yes
Altmetrics