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Optics Letters

Optics Letters


  • Vol. 27, Iss. 2 — Jan. 15, 2002
  • pp: 80–82

Influence of a sharp fiber tip on high-Q modes of a microsphere resonator

S. Götzinger, O. Benson, and V. Sandoghdar  »View Author Affiliations

Optics Letters, Vol. 27, Issue 2, pp. 80-82 (2002)

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We investigate the degradation of the Q factor of a fundamental whispering-gallery mode of a microsphere resonator when a fiber tip is placed in the evanescent field of the mode. With a tip diameter of 80 nm it is possible to maintain a Q factor exceeding 108, even when the tip is as close as 10 nm to the sphere surface. This result demonstrates the possibility of using such a tip as a “nanotool” to actively place a single nanoparticle in a single high- Q mode with great precision to achieve well-controlled coupling.

© 2002 Optical Society of America

OCIS Codes
(140.4780) Lasers and laser optics : Optical resonators
(270.0270) Quantum optics : Quantum optics

S. Götzinger, O. Benson, and V. Sandoghdar, "Influence of a sharp fiber tip on high-Q modes of a microsphere resonator," Opt. Lett. 27, 80-82 (2002)

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