Effect of frequency detuning on Brillouin lasing in microcavities

Journal Article · Sun Mar 01 04:00:00 EST 2020 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QEL17170· OSTI ID:23141909

Korobko, D. A.; Zolotovskii, I. O.; Zhukov, A. V.; Fomin, A. N.; Borisova, K. V.; Fotiadi, A. A. ^[1]

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1. Ulyanovsk State University, ul. L. Tolstogo 42, 432700 Ulyanovsk (Russian Federation)

We have theoretically investigated Brillouin lasing in microcavities in the case when the Brillouin shift and the intermode spacing of the microcavity do not coincide. It is shown that, despite the rise of the lasing threshold, a significant increase in the Brillouin signal intensity can be achieved in this case compared to the resonance one. A necessary condition for this effect is to select an optimal value of detuning of the pump radiation frequency from the frequency of the corresponding microcavity mode. The result of increasing the lasing threshold is also a narrowing of the Brillouin signal lasing range in the nonresonant case, which leads to a decrease in the signal noise level provided the detuning value is optimally selected. Analytical calculations are confirmed by the results of numerical modelling. (paper)

• OSTI ID: 23141909
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 3 Vol. 50; ISSN 1063-7818; ISSN QUELEZ
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
COMPARATIVE EVALUATIONS
RESONANCE
SIGNALS
SIMULATION