Fabrication of whispering gallery mode cavity using crystal growth

Hiroshi Kudo; Yohei Ogawa; Takumi Kato; Atsushi Yokoo; Takasumi Tanabe

doi:10.1063/1.4807924

Fabrication of whispering gallery mode cavity using crystal growth

Hiroshi Kudo, Yohei Ogawa, Takumi Kato, Atsushi Yokoo, Takasumi Tanabe

Department of Electronics and Electrical Engineering

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

12 Citations (Scopus)

Abstract

We developed a method for fabricating crystalline whispering gallery mode cavities based on laser-heated pedestal growth. We fabricated sapphire cavities and obtained a Q factor of 1.6 × 10⁴ with a cavity whose radius was about 120 μm. We showed numerically that the cross sectional shape of the cavity is sensitive to the cavity Q, and we controlled it by changing the growth condition in the molten zone, without significantly degrading the crystal structure.

Original language	English
Article number	211105
Journal	Applied Physics Letters
Volume	102
Issue number	21
DOIs	https://doi.org/10.1063/1.4807924
Publication status	Published - 2013 May 27

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/1.4807924

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title = "Fabrication of whispering gallery mode cavity using crystal growth",

abstract = "We developed a method for fabricating crystalline whispering gallery mode cavities based on laser-heated pedestal growth. We fabricated sapphire cavities and obtained a Q factor of 1.6 × 104 with a cavity whose radius was about 120 μm. We showed numerically that the cross sectional shape of the cavity is sensitive to the cavity Q, and we controlled it by changing the growth condition in the molten zone, without significantly degrading the crystal structure.",

author = "Hiroshi Kudo and Yohei Ogawa and Takumi Kato and Atsushi Yokoo and Takasumi Tanabe",

note = "Funding Information: This work was supported by the Strategic Information and Communication R&D Promotion Programme (SCOPE), a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Techonology, Japan (KAKEN #25600118), and Keio University's Program for the Advancement of Next Generation Research Projects.",

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AU - Kudo, Hiroshi

AU - Ogawa, Yohei

AU - Kato, Takumi

AU - Yokoo, Atsushi

AU - Tanabe, Takasumi

N1 - Funding Information: This work was supported by the Strategic Information and Communication R&D Promotion Programme (SCOPE), a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Techonology, Japan (KAKEN #25600118), and Keio University's Program for the Advancement of Next Generation Research Projects.

PY - 2013/5/27

Y1 - 2013/5/27

N2 - We developed a method for fabricating crystalline whispering gallery mode cavities based on laser-heated pedestal growth. We fabricated sapphire cavities and obtained a Q factor of 1.6 × 104 with a cavity whose radius was about 120 μm. We showed numerically that the cross sectional shape of the cavity is sensitive to the cavity Q, and we controlled it by changing the growth condition in the molten zone, without significantly degrading the crystal structure.

AB - We developed a method for fabricating crystalline whispering gallery mode cavities based on laser-heated pedestal growth. We fabricated sapphire cavities and obtained a Q factor of 1.6 × 104 with a cavity whose radius was about 120 μm. We showed numerically that the cross sectional shape of the cavity is sensitive to the cavity Q, and we controlled it by changing the growth condition in the molten zone, without significantly degrading the crystal structure.

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Fabrication of whispering gallery mode cavity using crystal growth

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