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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 20, Iss. 14 — Jul. 15, 1995
  • pp: 1515–1517

Mapping whispering-gallery modes in microspheres with a near-field probe

J. C. Knight, N. Dubreuil, V. Sandoghdar, J. Hare, V. Lefèvre-Seguin, J. M. Raimond, and S. Haroche  »View Author Affiliations


Optics Letters, Vol. 20, Issue 14, pp. 1515-1517 (1995)
http://dx.doi.org/10.1364/OL.20.001515


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Abstract

We demonstrate the use of a near-field probe to map the angular dependence of high-Q whispering-gallery modes in fused-silica microspheres. The mapping is performed by placing a micrometer-sized tip formed on the end of a monomode fiber into the evanescent field at the microsphere surface, causing light to be coupled from the microsphere resonance into the fiber guided mode. The light output of the fiber is then measured while the tip is moved to different points on the microsphere surface. We have used this method to investigate the lifting of spherical degeneracy in the system.

© 1995 Optical Society of America

History
Original Manuscript: April 24, 1995
Published: July 15, 1995

Citation
J. C. Knight, N. Dubreuil, V. Sandoghdar, J. Hare, V. Lefèvre-Seguin, J. M. Raimond, and S. Haroche, "Mapping whispering-gallery modes in microspheres with a near-field probe," Opt. Lett. 20, 1515-1517 (1995)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-20-14-1515

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