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arXiv · 1907.04843

Visible nonlinear photonics via high-order-mode dispersion engineering

Yun Zhao·Xingchen Ji·Bok Young Kim·Prathamesh S. Donvalkar·Jae K. Jang·Chaitanya Joshi·Mengjie Yu·Chaitali Joshi·Renato R. Domeneguetti·Felippe A. S. Barbosa·Paulo Nussenzveig·Yoshitomo Okawachi·Michal Lipson·Alexander L. Gaeta
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Abstract

Over the past decade, remarkable advances have been realized in chip-based nonlinear photonic devices for classical and quantum applications in the near- and mid-infrared regimes. However, few demonstrations have been realized in the visible and near-visible regimes, primarily due to the large normal material group-velocity dispersion (GVD) that makes it challenging to phase match third-order parametric processes. In this paper, we show that exploiting dispersion engineering of higher-order waveguide modes provides waveguide dispersion that allows for small or anomalous GVD in the visible and near-visible regimes and phase matching of four-wave mixing processes. We illustrate the power of this concept by demonstrating in silicon nitride microresonators a near-visible modelocked Kerr frequency comb and a narrow-band photon-pair source compatible with Rb transitions. These realizations extend applications of nonlinear photonics towards the visible and near-visible regimes for applications in time and frequency metrology, spectral calibration, quantum information, and biomedical applications.

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Yun Zhao, Xingchen Ji, Bok Young Kim, Prathamesh S. Donvalkar, Jae K. Jang, Chaitanya Joshi, Mengjie Yu, Chaitali Joshi, Renato R. Domeneguetti, Felippe A. S. Barbosa, Paulo Nussenzveig, Yoshitomo Okawachi, Michal Lipson, Alexander L. Gaeta. 2020-02-21. Visible nonlinear photonics via high-order-mode dispersion engineering. https://doi.org/10.1364/optica.7.000135

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