Strain-Controlled Phase Matching of Optical Harmonic Generation in Microfibers

作者：Zhen Hao, Biqiang Jiang, Yuxin Ma, Ruixuan Yi, Hanyu Jin, Leijia Huang, Xuetao Gan, Jianlin Zhao · 发表于：Physical Review Applied · 年份：2023 · DOI：10.1103/physrevapplied.19.l031002 · 被引用次数：9 · 研究领域：Advanced Fiber Laser Technologies、Advanced Fiber Optic Sensors、Photonic Crystal and Fiber Optics

Nonlinear parametric processes in optical fibers provide opportunities to expand advanced fiber-based technologies of lasers, communications, and sensors, but their efficiencies are significantly degraded by phase mismatching. This study proposes a strategy to accurately control the phase matching of optical harmonic generations in a microfiber, by applying a mechanical strain that modifies its structure and refractive index. This effective strategy to optimize nonlinear processes will be beneficial to all-fiber nonlinear optics and could extend their applications in optical communications and signal processing.