Highly-coherent second-harmonic generation in a chip-scale source

Xuanyi Liu; Hongyan Fu

doi:10.1038/s41377-023-01359-0

Highly-coherent second-harmonic generation in a chip-scale source

Light Sci Appl. 2024 Jan 17;13(1):20. doi: 10.1038/s41377-023-01359-0.

Authors

Xuanyi Liu¹, Hongyan Fu²

Affiliations

¹ Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China.
² Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, 518055, China. hyfu@sz.tsinghua.edu.cn.

Abstract

A highly efficient second-harmonic source is integrated into a silicon nitride microring resonator, unlocking the potential for advanced chip-scale devices such as miniaturized atomic clocks and fully integrated self-referenced microcombs.