Spectrally resolved linewidth enhancement factor of a semiconductor frequency comb
Optics
2021-04-14 v1 Applied Physics
Abstract
The linewidth enhancement factor (LEF) has recently moved into the spotlight of research on frequency comb generation in semiconductor lasers. Here we present a novel modulation experiment, which enables the direct measurement of the spectrally resolved LEF in a laser frequency comb. By utilizing a phase-sensitive technique, we are able to extract the LEF for each comb mode. We first investigate and verify this universally applicable technique using Maxwell-Bloch simulations and then present the experimental demonstration on a quantum cascade laser frequency comb.
Cite
@article{arxiv.2104.05747,
title = {Spectrally resolved linewidth enhancement factor of a semiconductor frequency comb},
author = {Nikola Opačak and Florian Pilat and Dmitry Kazakov and Sandro Dal Cin and Georg Ramer and Bernhard Lendl and Federico Capasso and Benedikt Schwarz},
journal= {arXiv preprint arXiv:2104.05747},
year = {2021}
}