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Non-resonant operation of microcavity Brillouin lasers
Author(s): Dmitry A. Korobko; Igor O. Zolotovskii; S. G. Sokolovskii; Andrei A. Fotiadi
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Paper Abstract

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.

Paper Details

Date Published: 21 March 2019
PDF: 12 pages
Proc. SPIE 10904, Laser Resonators, Microresonators, and Beam Control XXI, 109041U (21 March 2019); doi: 10.1117/12.2508345
Show Author Affiliations
Dmitry A. Korobko, Ulyanovsk State Univ. (Russian Federation)
Igor O. Zolotovskii, Ulyanovsk State Univ. (Russian Federation)
S. G. Sokolovskii, Aston Univ. (United Kingdom)
Andrei A. Fotiadi, Ulyanovsk State Univ. (Russian Federation)
Aston Univ. (United Kingdom)
Univ. de Mons (Belgium)

Published in SPIE Proceedings Vol. 10904:
Laser Resonators, Microresonators, and Beam Control XXI
Alexis V. Kudryashov; Alan H. Paxton; Vladimir S. Ilchenko, Editor(s)

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