Hyperparametric effects in a whispering-gallery mode rutile dielectric resonator at liquid helium temperatures

Nitin R. Nand*, Maxim Goryachev, Jean Michel Le Floch, Daniel L. Creedon, Michael E. Tobar

*Corresponding author for this work

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

We report the first observation of low power drive level sensitivity, hyperparametric amplification, and single-mode hyperparametric oscillations in a dielectric rutile whispering-gallery mode resonator at 4.2 K. The latter gives rise to a comb of sidebands at 19.756 GHz. Whereas, most frequency combs in the literature have been observed in optical systems using an ensemble of equally spaced modes in microresonators or fibers, the present work represents generation of a frequency comb using only a single-mode. The experimental observations are explained by an additional 1/2 degree-of-freedom originating from an intrinsic material nonlinearity at optical frequencies, which affects the microwave properties due to the extremely low loss of rutile. Using a model based on lumped circuits, we demonstrate that the resonance between the photonic and material 1/2 degree-of-freedom, is responsible for the hyperparametric energy transfer in the system.

Original languageEnglish
Article number134105
Pages (from-to)1-8
Number of pages8
JournalJournal of Applied Physics
Volume116
Issue number13
DOIs
Publication statusPublished - 7 Oct 2014

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