Journal
OPTICS LETTERS
Volume 47, Issue 15, Pages 3884-3887Publisher
Optica Publishing Group
DOI: 10.1364/OL.463317
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Funding
- National Natural Science Foundation of China [62105291, 11874323]
- Zhejiang Sci-Tech University [11430131282104]
- City University of Hong Kong [SRG-Fd 7005599]
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This article reports the first observation of second-harmonic generation in a high-index doped silica micro-ring resonator and explores its generation mechanism and influencing factors. This work offers a new approach to achieve a visible-light integrated optical platform.
We report the first, to the best of our knowledge, observation of second-harmonic generation (SHG) in a high-index doped silica micro-ring resonator, due to the symmetry-breaking-induced chi((2)) at the core and cladding interface of the waveguide. The generated SH power is shown to have quadratic dependence on the in-cavity power of the fundamental pump at around 1550 nm. The pumping wavelength sweep method is adopted to fulfill the phase-matching condition for maximum conversion efficiency of SHG. This work offers a new approach to generate a visible source for the visible-light integrated optical platform from infrared-visible light con- version. (C) 2022 Optica Publishing Group
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