Non-resonant operation of microcavity Brillouin lasers

Dmitry A. Korobko, Igor O. Zolotovskii, Sergei Sokolovskii, Sergei Sokolovski, Andrei A. Fotiadi, Alexis V. Kudryashov, Alan H. Paxton, Vladimir S. Ilchenko

Research output: Contribution to journalConference articlepeer-review


We present theoretical framework to describe Brillouin lasing in microcavities in the case of a significant mismatch between the Brillouin shift and the cavity intermode spacing. We show that despite an increase of the lasing threshold a significant increase of the Brillouin power in comparison with the resonance case is achievable. A necessary condition for this effect is the optimal value of the pump frequency detuning from the cavity mode frequency. An increase of the Brillouin threshold is accompanied by narrowing of the spectrum range where the Brillouin signal could be generated in non-resonant case. Besides, with the optimal pump frequency detuning the Brillouin signal noise level is reduced. Analytical results are in quantitative agreement with the results of numerical simulations.
Original languageEnglish
Article number109041U
JournalProceedings of SPIE - International Society for Optical Engineering
Publication statusPublished - 21 Mar 2019
EventLaser Resonators, Microresonators, and Beam Control XXI - San Francisco, United States
Duration: 2 Feb 20197 Feb 2019

Bibliographical note

Copyright 2019 SPIE. One print or electronic copy may be made for personal use only. Systematic reproduction, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper are prohibited.


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  • Microresonators
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