Abstract

We show that an evanescent field coupler can break the symmetry of a high quality factor monolithic ring microcavity, enabling generation of strongly nondegenerate frequency harmonics involving a few mode families that are orthogonal in an unperturbed microcavity. Using this property, we explain observed experimental generation of frequency combs in magnesium fluoride whispering gallery mode resonators characterized with strong normal group velocity dispersion.

© 2020 Optical Society of America

Phase-locking transition in Raman combs generated with whispering gallery mode resonators

Guoping Lin and Yanne K. Chembo
Opt. Lett. 41(16) 3718-3721 (2016)

Integrated in-fiber coupler for a whispering-gallery mode microsphere resonator

Xin Liu, X. L. Cui, and D. N. Wang
Opt. Lett. 45(6) 1467-1470 (2020)

Modulation instability induced by cross-phase modulation of transient stimulated Raman scattering and self-phase modulation in calcite

Shah Faisal B. Mazhar and Robert R. Alfano
Opt. Lett. 45(11) 3167-3170 (2020)

Clustered frequency comb

Andrey B. Matsko, Anatoliy A. Savchenkov, Shu-Wei Huang, and Lute Maleki
Opt. Lett. 41(21) 5102-5105 (2016)

Generation of near-infrared frequency combs from a MgF₂ whispering gallery mode resonator

W. Liang, A. A. Savchenkov, A. B. Matsko, V. S. Ilchenko, D. Seidel, and L. Maleki
Opt. Lett. 36(12) 2290-2292 (2011)