Fabrication of a nanofiber Bragg cavity with high quality factor using a focused helium ion beam | Zendy

Hideaki Takashima | Zendy; Atsushi Fukuda | Zendy; Hironaga Maruya | Zendy; Toshiyuki Tashima | Zendy; Andreas W. Schell | Zendy; Shigeki Takeuchi | Zendy

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Fabrication of a nanofiber Bragg cavity with high quality factor using a focused helium ion beam

Author(s) -

Hideaki Takashima,

Atsushi Fukuda,

Hironaga Maruya,

Toshiyuki Tashima,

Andreas W. Schell,

Shigeki Takeuchi

Publication year - 2019

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.27.006792

Subject(s) - materials science , fabrication , focused ion beam , optics , optoelectronics , beam (structure) , ion beam , photonics , optical fiber , helium , gallium , ion , atomic physics , physics , medicine , alternative medicine , pathology , quantum mechanics , metallurgy

Nanofiber Bragg cavities (NFBCs) are solid-state microcavities fabricated in an optical tapered fiber. NFBCs are promising candidates as a platform for photonic quantum information devices due to their small mode volume, ultra-high coupling efficiencies, and ultra-wide tunability. However, the quality (Q) factor has been limited to be approximately 250, which may be due to limitations in the fabrication process. Here we report high Q NFBCs fabricated using a focused helium ion beam. Whenan NFBC with grooves of 640 periods is fabricated, the Q factor is over 4170, which is more than 16 times larger than that previously fabricated using a focused gallium ion beam.

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