High-numerical-aperture microlensed tip on an air-clad optical fiber

Shinya Kato, Sho Chonan, Takao Aoki*

*この研究の対応する著者

研究成果: Article査読

32 被引用数 (Scopus)

抄録

We show that a hemispherically shaped tip on an air-clad optical fiber simultaneously works as a high-numericalaperture lens and efficiently collects photons from an emitter placed near the beam waist into the fundamental guided mode. Numerical simulations show that the coupling efficiency reaches about 25%. We have constructed a confocal microscope with such a lensed fiber. The measurements are in good agreement with the numerical simulation. The monolithic structure with a high-photon-collection efficiency will provide a flexible substitute for a conventional lens system in various experiments such as single-atom trapping with a tightly focused optical trap.

本文言語English
ページ(範囲)773-776
ページ数4
ジャーナルOptics Letters
39
4
DOI
出版ステータスPublished - 2014 2月 15

ASJC Scopus subject areas

  • 原子分子物理学および光学

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