Coherent Frequency Combs produced by Self Frequency Modulation in Quantum Cascade Lasers
Optics
2014-03-21 v1
Abstract
One salient characteristic of Quantum Cascade Laser (QCL) is its very shor gain recovery time that so far thwarted the attempts to achieve self-mode locking of the device into a train of single pulses. We show theoretically that four wave mixing, combined with the short gain recovery time causes QCL to operate in the self-frequency-modulated regime characterized by a constant power in time domain and stable coherent comb in the frequency domain.Coherent frequency comb may enable many potential applications of QCL in sensing and measurement.
Cite
@article{arxiv.1311.7431,
title = {Coherent Frequency Combs produced by Self Frequency Modulation in Quantum Cascade Lasers},
author = {Jacob Khurgin and Yamac Dikmelik and Andreas Hugi and Jerome Faist},
journal= {arXiv preprint arXiv:1311.7431},
year = {2014}
}