On-chip pulse generation at 8 {\mu}m wavelength
Optics
2026-03-11 v1
Abstract
The mid-infrared spectral region holds growing importance for applications such as gas sensing and spectroscopy. Although compact ultrashort pulse laser sources are essential to enable these applications, their realization in this spectral range remains an open challenge. We demonstrate an integrated approach to generate pulses in the mid-infrared based on chirped Bragg gratings engineered to compensate for the group delay dispersion of quantum cascade laser frequency comb sources. SiGe graded-index photonic circuits are used for operation around 8 {\mu}m wavelength. With this approach, pulses as short as 1.39 picoseconds were obtained, marking a key step towards fully integrated ultrashort pulse sources in the mid-infrared.
Keywords
Cite
@article{arxiv.2506.10798,
title = {On-chip pulse generation at 8 {\mu}m wavelength},
author = {Annabelle Bricout and Mathieu Bertrand and Philipp Täschler and Barbara Schneider and Victor Turpaud and Stefano Calcaterra and Davide Impelluso and Marco Faverzani and David Bouville and Jean-René Coudevylle and Samson Edmond and Etienne Herth and Carlos Alonso-Ramos and Laurent Vivien and Jacopo Frigerio and Giovanni Isella and Jérôme Faist and Delphine Marris-Morini},
journal= {arXiv preprint arXiv:2506.10798},
year = {2026}
}