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Competition between Raman and Kerr effects in microresonator comb generation

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arxiv 1705.01900 v1 pith:EUTTNLIL submitted 2017-05-04 physics.optics

Yoshitomo Okawachi , Mengjie Yu , Vivek Venkataraman , Pawel M. Latawiec , Austin G. Griffith , Michal Lipson , Marko Loncar , Alexander L. Gaeta This is my paper · ORCID
classification physics.optics
keywords ramancombeffectskerrcompetitiongainmicroresonatormicroresonators
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We investigate the effects of Raman and Kerr gain in crystalline microresonators and determine the conditions required to generate modelocked frequency combs. We show theoretically that strong, narrowband Raman gain determines a maximum microresonator size allowable to achieve comb formation. We verify this condition experimentally in diamond and silicon microresonators and show that there exists a competition between Raman and Kerr effects that leads to the existence of two different comb states.

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