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arXiv · 2003.06556

Radio-Frequency-to-Optical Conversion using Acoustic and Optical Whispering Gallery Modes

Rekishu Yamazaki·Ayato Okada·Atsushi Noguchi·Shingo Akao·Yusuke Tsukahara·Kazushi Yamanaka·Nobuo Takeda·Yutaka Tabuchi·Koji Usami·Yasunobu Nakamura
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Abstract

Whispering gallery modes (WGMs), circulating modes near the surface of a spheroidal material, have been known to exhibit high quality factors for both acoustic and electromagnetic waves. Here, we report an electro-optomechanical system, where the overlapping WGMs of acoustic and optical waves along the equator of a dielectric sphere strongly couple to each other. The triple-resonance phase-matching condition provides a large enhancement of the Brillouin scattering only in a single sideband, and conversion from the input radio-frequency signal exciting the acoustic mode to the output optical signal is observed.

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Rekishu Yamazaki, Ayato Okada, Atsushi Noguchi, Shingo Akao, Yusuke Tsukahara, Kazushi Yamanaka, Nobuo Takeda, Yutaka Tabuchi, Koji Usami, Yasunobu Nakamura. 2020-03-14. Radio-Frequency-to-Optical Conversion using Acoustic and Optical Whispering Gallery Modes. https://doi.org/10.1103/physreva.101.053839

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