Influence of a sharp fiber tip on high-Q modes of a microsphere resonator
- 15 January 2002
- journal article
- Published by Optica Publishing Group in Optics Letters
- Vol. 27 (2) , 80-82
- https://doi.org/10.1364/ol.27.000080
Abstract
We investigate the degradation of the 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 factor exceeding , 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- mode with great precision to achieve well-controlled coupling.
Keywords
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