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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 17 — Aug. 13, 2012
  • pp: 19545–19553

Coupling of ultrathin tapered fibers with high-Q microsphere resonators at cryogenic temperatures and observation of phase-shift transition from undercoupling to overcoupling

Masazumi Fujiwara, Tetsuya Noda, Akira Tanaka, Kiyota Toubaru, Hong-Quan Zhao, and Shigeki Takeuchi  »View Author Affiliations


Optics Express, Vol. 20, Issue 17, pp. 19545-19553 (2012)
http://dx.doi.org/10.1364/OE.20.019545


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Abstract

We cooled ultrathin tapered fibers to cryogenic temperatures and controllably coupled them with high-Q microsphere resonators at a wavelength close to the optical transition of diamond nitrogen vacancy centers. The 310-nm-diameter tapered fibers were stably nanopositioned close to the microspheres with a positioning stability of approximately 10 nm over a temperature range of 7–28 K. A cavity-induced phase shift was observed in this temperature range, demonstrating a discrete transition from undercoupling to overcoupling.

© 2012 OSA

OCIS Codes
(270.0270) Quantum optics : Quantum optics
(350.3950) Other areas of optics : Micro-optics
(140.3945) Lasers and laser optics : Microcavities
(350.4238) Other areas of optics : Nanophotonics and photonic crystals

ToC Category:
Quantum Optics

History
Original Manuscript: May 29, 2012
Revised Manuscript: July 23, 2012
Manuscript Accepted: August 3, 2012
Published: August 10, 2012

Citation
Masazumi Fujiwara, Tetsuya Noda, Akira Tanaka, Kiyota Toubaru, Hong-Quan Zhao, and Shigeki Takeuchi, "Coupling of ultrathin tapered fibers with high-Q microsphere resonators at cryogenic temperatures and observation of phase-shift transition from undercoupling to overcoupling," Opt. Express 20, 19545-19553 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-17-19545


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