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Related Experiment Video

Updated: Dec 27, 2025

Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators
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Fabrication and Characterization of High-Q Silicon Nitride Membrane Resonators

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Detuning effects in Brillouin ring microresonator laser.

D A Korobko, I O Zolotovskii, V V Svetukhin

    Optics Express
    |March 4, 2020
    PubMed
    Summary

    We developed a theoretical framework for Brillouin lasers in integrated microcavities. Optimal pump frequency detuning enhances laser power and minimizes noise, overcoming previous limitations for integrated platforms.

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    Area of Science:

    • Optics and Photonics
    • Integrated Photonics
    • Nonlinear Optics

    Background:

    • Brillouin lasers offer unique properties for various applications.
    • Integrating Brillouin lasers onto microcavity platforms presents performance challenges.
    • Understanding nonlinear interactions in microresonators is crucial for device development.

    Purpose of the Study:

    • To develop a theoretical framework for Brillouin lasing in integrated ring microcavities.
    • To analyze the impact of mismatched Brillouin shift and microresonator inter-mode spacing.
    • To identify optimal conditions for enhanced laser power and reduced noise in integrated Brillouin lasers.

    Main Methods:

    • Theoretical modeling of Brillouin lasing in ring microcavities.
    • Analysis of frequency detuning effects on lasing threshold and power.

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  • Steady-state analytical approach validated by numerical simulations.

    • Main Results:

    • Lasing threshold increases with pump frequency detuning.
    • Significant laser power enhancement is achievable compared to pure resonant interaction.
    • An optimal pump frequency detuning exists for maximal Brillouin signal and minimal noise.
    • Increased detuning narrows the pump frequency range for lasing.

    Conclusions:

    • A theoretical framework successfully describes Brillouin lasing in integrated microcavities.
    • Optimizing pump frequency detuning is key to enhancing power and reducing noise.
    • This work provides a pathway for high-performance integrated Brillouin laser systems.