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

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...

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Main Authors: Hiroki Itobe, Yosuke Nakagawa, Yuta Mizumoto, Hiroi Kangawa, Yasuhiro Kakinuma, Takasumi Tanabe
Format: Article
Language:English
Published: AIP Publishing LLC 2016-05-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.4952405
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author Hiroki Itobe
Yosuke Nakagawa
Yuta Mizumoto
Hiroi Kangawa
Yasuhiro Kakinuma
Takasumi Tanabe
author_facet Hiroki Itobe
Yosuke Nakagawa
Yuta Mizumoto
Hiroi Kangawa
Yasuhiro Kakinuma
Takasumi Tanabe
author_sort Hiroki Itobe
collection DOAJ
description 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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spelling doaj.art-900067b13f284e0480ce5e3af8bb960a2022-12-22T03:24:24ZengAIP Publishing LLCAIP Advances2158-32262016-05-0165055116055116-1010.1063/1.4952405066605ADVBi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilizationHiroki Itobe0Yosuke Nakagawa1Yuta Mizumoto2Hiroi Kangawa3Yasuhiro Kakinuma4Takasumi Tanabe5Department of Electronics and Electrical Engineering, Keio University, Yokohama, 223-8522, JapanDepartment of Electronics and Electrical Engineering, Keio University, Yokohama, 223-8522, JapanDepartment of System Design Engineering, Keio University, Yokohama, 223-8522, JapanDepartment of System Design Engineering, Keio University, Yokohama, 223-8522, JapanDepartment of System Design Engineering, Keio University, Yokohama, 223-8522, JapanDepartment of Electronics and Electrical Engineering, Keio University, Yokohama, 223-8522, JapanWe 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.http://dx.doi.org/10.1063/1.4952405
spellingShingle Hiroki Itobe
Yosuke Nakagawa
Yuta Mizumoto
Hiroi Kangawa
Yasuhiro Kakinuma
Takasumi Tanabe
Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
AIP Advances
title Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
title_full Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
title_fullStr Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
title_full_unstemmed Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
title_short Bi-material crystalline whispering gallery mode microcavity structure for thermo-opto-mechanical stabilization
title_sort bi material crystalline whispering gallery mode microcavity structure for thermo opto mechanical stabilization
url http://dx.doi.org/10.1063/1.4952405
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