Non-resonant operation of microcavity Brillouin lasers

Dmitry A. Korobko; Igor O. Zolotovskii; S. G. Sokolovskii; Andrei A. Fotiadi

doi:10.1117/12.2508345

21 March 2019 Non-resonant operation of microcavity Brillouin lasers

Dmitry A. Korobko, Igor O. Zolotovskii, S. G. Sokolovskii, Andrei A. Fotiadi

Proceedings Volume 10904, Laser Resonators, Microresonators, and Beam Control XXI; 109041U (2019) https://doi.org/10.1117/12.2508345
Event: SPIE LASE, 2019, San Francisco, California, United States

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.

Citation Download Citation

Dmitry A. Korobko, Igor O. Zolotovskii, S. G. Sokolovskii, and Andrei A. Fotiadi "Non-resonant operation of microcavity Brillouin lasers", Proc. SPIE 10904, Laser Resonators, Microresonators, and Beam Control XXI, 109041U (21 March 2019); https://doi.org/10.1117/12.2508345

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