Cross-polarized stimulated Brillouin scattering empowered photonics

• DOI: 10.48550/arxiv.2405.15888
• Publication Date: 2024-06-14
• Authors: Shu-Wei Huang; Mingming Nie; Jonathan Musgrave
• Keywords: FOS: Physical sciences; Physics - Optics; Optics (physics.optics)

Abstract This paper explores the integration of cross-polarized stimulated Brillouin scattering (XP-SBS) with Kerr and quadratic nonlinearities in lithium niobate (LN) to enhance photonic device performance. Three novel applications are demonstrated: (i) a reconfigurable stimulated Brillouin laser (SBL) with 0.7-Hz narrow linewidth and 40-nm tunability, enabled by XP-SBS’s thermo-optic phase matching; (ii) an efficient coherent mode converter achieving 55% conversion efficiency via intracavity Brillouin-enhanced four-wave mixing; (iii) 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 significant improvements in photonic technologies, including narrow-linewidth laser, microcomb generation, precision metrology, and optical signal processing, paving the way for more robust and versatile applications.