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Virtual Journal for Biomedical Optics

Virtual Journal for Biomedical Optics

| EXPLORING THE INTERFACE OF LIGHT AND BIOMEDICINE

  • Editors: Andrew Dunn and Anthony Durkin
  • Vol. 9, Iss. 4 — Apr. 1, 2014

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

Shinya Kato, Sho Chonan, and Takao Aoki  »View Author Affiliations


Optics Letters, Vol. 39, Issue 4, pp. 773-776 (2014)
http://dx.doi.org/10.1364/OL.39.000773


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Abstract

We show that a hemispherically shaped tip on an air-clad optical fiber simultaneously works as a high-numerical-aperture 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.

© 2014 Optical Society of America

OCIS Codes
(020.7010) Atomic and molecular physics : Laser trapping
(060.2310) Fiber optics and optical communications : Fiber optics
(270.0270) Quantum optics : Quantum optics

ToC Category:
Atomic and Molecular Physics

History
Original Manuscript: November 13, 2013
Revised Manuscript: January 3, 2014
Manuscript Accepted: January 3, 2014
Published: February 4, 2014

Virtual Issues
Vol. 9, Iss. 4 Virtual Journal for Biomedical Optics

Citation
Shinya Kato, Sho Chonan, and Takao Aoki, "High-numerical-aperture microlensed tip on an air-clad optical fiber," Opt. Lett. 39, 773-776 (2014)
http://www.opticsinfobase.org/vjbo/abstract.cfm?URI=ol-39-4-773

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