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arXiv · 1803.11341

Simultaneous generation of four-wave mixing and stimulated Raman scattering in coupled lithium niobate microdisks mediated by second harmonic generation

Min Wang·Ni Yao·Rongbo Wu·Zhiwei Fang·Shilong Lv·Jianhao Zhang·Lingling Qiao·Jintian Lin·Wei Fang·Ya Cheng
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Abstract

High quality lithium niobate thin film microresonators provide an ideal platform for on-chip nonlinear optics applications. However, the phase matching condition for efficient parametric process sets a high requirement for fabrication control. Here we demonstrate a photonic molecular structure composed of two strongly coupled lithium niobate microdisks of different diameters fabricated using femtosecond laser micromachining and focused ion beam milling. With a continuous wave excitation, rich nonlinear optical processes including cascaded four-wave mixing and stimulated Raman scattering were observed around the second harmonic wavelength. Our results indicate that the coupled microdisks form a superior system for nonlinear optical process.

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Min Wang, Ni Yao, Rongbo Wu, Zhiwei Fang, Shilong Lv, Jianhao Zhang, Lingling Qiao, Jintian Lin, Wei Fang, Ya Cheng. 2018-03-30. Simultaneous generation of four-wave mixing and stimulated Raman scattering in coupled lithium niobate microdisks mediated by second harmonic generation. https://arxiv.org/abs/1803.11341

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