Integrated tunable green light source on silicon nitride

Gang Wang; Ozan Yakar; Xinru Ji; Marco Clementi; Ji Zhou; Christian Lafforgue; Jiaye Wu; Jianqi Hu; Tobias J. Kippenberg; Camille-Sophie Brès

doi:10.1038/s41377-026-02222-8

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Integrated tunable green light source on silicon nitride

Original Articles

- Integrated tunable green light source on silicon nitride
- Integrated tunable green light source on silicon nitride
- Light: Science & Applications 2026年15卷第5期页码：1523-1531
- Affiliations：
  
  1.École Polytechnique Fédérale de Lausanne, Photonic Systems Laboratory (PHOSL), Lausanne, Switzerland
  2.École Polytechnique Fédérale de Lausanne, Laboratory of Photonics and Quantum Measurements (LPQM), Lausanne, Switzerland
  3.Dipartimento di Fisica "A. Volta", Universitá di Pavia, Pavia, Italy
- Author bio：
  
  Camille-Sophie Brès (camille.bres@epfl.ch)
- Funds：
- DOI：10.1038/s41377-026-02222-8
  中图分类号：
- 收稿：2025-04-30，
  
  修回：2026-01-16，
  
  录用：2026-02-01，
  
  网络首发：2026-02-28，
  
  纸质出版：2026-05-31
- Accepted：
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Gang Wang, Ozan Yakar, Xinru Ji, 等. Integrated tunable green light source on silicon nitride[J]. Light: Science & Applications, 2026,15(5):1523-1531.

Wang, G. et al. Integrated tunable green light source on silicon nitride. Light: Science & Applications, 15, 1523-1531 (2026).
Gang Wang, Ozan Yakar, Xinru Ji, 等. Integrated tunable green light source on silicon nitride[J]. Light: Science & Applications, 2026,15(5):1523-1531. DOI： 10.1038/s41377-026-02222-8.

Wang, G. et al. Integrated tunable green light source on silicon nitride. Light: Science & Applications, 15, 1523-1531 (2026). DOI： 10.1038/s41377-026-02222-8.

摘要

Abstract

Integrated green light sources are essential for telecommunications and quantum applications

while the performance of current on-chip green light generation is still limited in power and tunability. In this work

we demonstrate green light generation in silicon nitride microresonators using photo-induced second-order nonlinearities

achieving up to 3.5 mW green power via second-harmonic generation and densely tunable over a 29 nm range. In addition

we report milliwatt-level all-optical poling (AOP) threshold

allowing for amplifier-free continuous-wave AOP. Furthermore

we demonstrate non-cascaded sum-frequency generation

leveraging the combination of AOP and simultaneous coherent frequency combs generation at 1

m. Such comb-assisted AOP enables switching of the green light generation over an 11 nm range while maintaining the pump within a single resonance. The combination of such highly efficient photo-induced nonlinearity and multi-wavelength AOP enables the realization of low-threshold

high-power

widely-tunable on-chip green sources.

关键词

Keywords

references

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