Coherent master equation for laser modelocking

Auro M. Perego, Bruno Garbin, François Gustave, Stephane Barland, Franco Prati, Germán J. De Valcárcel*

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

Modelocked lasers constitute the fundamental source of optically-coherent ultrashort-pulsed radiation, with huge impact in science and technology. Their modeling largely rests on the master equation (ME) approach introduced in 1975 by Hermann A. Haus. However, that description fails when the medium dynamics is fast and, ultimately, when light-matter quantum coherence is relevant. Here we set a rigorous and general ME framework, the coherent ME (CME), that overcomes both limitations. The CME predicts strong deviations from Haus ME, which we substantiate through an amplitude-modulated semiconductor laser experiment. Accounting for coherent effects, like the Risken-Nummedal-Graham-Haken multimode instability, we envisage the usefulness of the CME for describing self-modelocking and spontaneous frequency comb formation in quantum-cascade and quantum-dot lasers. Furthermore, the CME paves the way for exploiting the rich phenomenology of coherent effects in laser design, which has been hampered so far by the lack of a coherent ME formalism
Original languageEnglish
Article number311
Number of pages1
JournalNature Communications
Volume11
Issue number1
DOIs
Publication statusPublished - 16 Jan 2020

    Fingerprint

Bibliographical note

This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

Cite this

Perego, A. M., Garbin, B., Gustave, F., Barland, S., Prati, F., & De Valcárcel, G. J. (2020). Coherent master equation for laser modelocking. Nature Communications, 11(1), [311]. https://doi.org/10.1038/s41467-019-14013-4