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<p>This paper studies cross-polarized stimulated Brillouin scattering (XP-SBS) and its integration with quadratic nonlinearity in lithium niobate to enhance photonic device performance. Three novel applications are demonstrated: (1) a reconfigurable stimulated Brillouin laser with a 0.7-Hz narrow linewidth and 40-nm tunability, enabled by the thermo-optic phase matching of XP-SBS; (2) an efficient coherent mode converter achieving 55% conversion efficiency via intracavity Brillouin-enhanced four-wave mixing; (3) a Brillouin-quadratic laser and frequency comb operational in near-infrared and visible bands, benefiting from the interaction between XP-SBS and quadratic nonlinearity. These advancements promise substantial improvements in photonic technologies, including narrow-linewidth lasers, microcomb generation and optical signal processing, paving the way for more robust and versatile applications.</p>

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Cross-polarized stimulated Brillouin scattering-empowered photonics

  • 期刊论文

  • 发表日期：

    2025年5月20日

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  • Mingming Nie,
  • Jonathan Musgrave,
  • Shu-Wei Huang

摘要

This paper studies cross-polarized stimulated Brillouin scattering (XP-SBS) and its integration with quadratic nonlinearity in lithium niobate to enhance photonic device performance. Three novel applications are demonstrated: (1) a reconfigurable stimulated Brillouin laser with a 0.7-Hz narrow linewidth and 40-nm tunability, enabled by the thermo-optic phase matching of XP-SBS; (2) an efficient coherent mode converter achieving 55% conversion efficiency via intracavity Brillouin-enhanced four-wave mixing; (3) a Brillouin-quadratic laser and frequency comb operational in near-infrared and visible bands, benefiting from the interaction between XP-SBS and quadratic nonlinearity. These advancements promise substantial improvements in photonic technologies, including narrow-linewidth lasers, microcomb generation and optical signal processing, paving the way for more robust and versatile applications.