Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization

Hiroki Itobe; Yosuke Nakagawa; Yuta Mizumoto; Hiroi Kangawa; Yasuhiro Kakinuma; Takasumi Tanabe

doi:10.1063/1.4952405

Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization

Hiroki Itobe, Yosuke Nakagawa, Yuta Mizumoto, Hiroi Kangawa, Yasuhiro Kakinuma, Takasumi Tanabe

Research output: Contribution to journal › Article › peer-review

8 Citations (Scopus)

Abstract

We fabricated a calcium fluoride (CaF₂) whispering gallery mode (WGM) microcavity with a computer controlled ultra-precision cutting process. We observed a thermo-opto-mechanical (TOM) oscillation in the CaF₂ WGM microcavity, which may influence the stability of the optical output when the cavity is employed for Kerr comb generation. We studied experimentally and numerically the mechanism of the TOM oscillation and showed that it is strongly dependent on cavity diameter. In addition, our numerical study suggests that a microcavity structure fabricated with a hybrid material (i.e. CaF₂ and silicon), which is compatible with an ultra-high Q and high thermal conductivity, will allow us to reduce the TOM oscillation and stabilize the optical output.

Original language	English
Article number	055116
Journal	AIP Advances
Volume	6
Issue number	5
DOIs	https://doi.org/10.1063/1.4952405
Publication status	Published - 2016 May 1

ASJC Scopus subject areas

Physics and Astronomy(all)

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abstract = "We fabricated a calcium fluoride (CaF2) whispering gallery mode (WGM) microcavity with a computer controlled ultra-precision cutting process. We observed a thermo-opto-mechanical (TOM) oscillation in the CaF2 WGM microcavity, which may influence the stability of the optical output when the cavity is employed for Kerr comb generation. We studied experimentally and numerically the mechanism of the TOM oscillation and showed that it is strongly dependent on cavity diameter. In addition, our numerical study suggests that a microcavity structure fabricated with a hybrid material (i.e. CaF2 and silicon), which is compatible with an ultra-high Q and high thermal conductivity, will allow us to reduce the TOM oscillation and stabilize the optical output.",

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T1 - Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization

AU - Itobe, Hiroki

AU - Nakagawa, Yosuke

AU - Mizumoto, Yuta

AU - Kangawa, Hiroi

AU - Kakinuma, Yasuhiro

AU - Tanabe, Takasumi

PY - 2016/5/1

Y1 - 2016/5/1

N2 - We fabricated a calcium fluoride (CaF2) whispering gallery mode (WGM) microcavity with a computer controlled ultra-precision cutting process. We observed a thermo-opto-mechanical (TOM) oscillation in the CaF2 WGM microcavity, which may influence the stability of the optical output when the cavity is employed for Kerr comb generation. We studied experimentally and numerically the mechanism of the TOM oscillation and showed that it is strongly dependent on cavity diameter. In addition, our numerical study suggests that a microcavity structure fabricated with a hybrid material (i.e. CaF2 and silicon), which is compatible with an ultra-high Q and high thermal conductivity, will allow us to reduce the TOM oscillation and stabilize the optical output.

AB - We fabricated a calcium fluoride (CaF2) whispering gallery mode (WGM) microcavity with a computer controlled ultra-precision cutting process. We observed a thermo-opto-mechanical (TOM) oscillation in the CaF2 WGM microcavity, which may influence the stability of the optical output when the cavity is employed for Kerr comb generation. We studied experimentally and numerically the mechanism of the TOM oscillation and showed that it is strongly dependent on cavity diameter. In addition, our numerical study suggests that a microcavity structure fabricated with a hybrid material (i.e. CaF2 and silicon), which is compatible with an ultra-high Q and high thermal conductivity, will allow us to reduce the TOM oscillation and stabilize the optical output.

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Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization

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