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Proceedings Paper

Cavity-enhanced effects with silica microspheres immersed in superfluid helium
Author(s): Valerie Lefevre-Seguin; F. Treussart; Vladimir S. Ilchenko; Jean-Francois Roch; Jean Hare; J.-M. Raimond; Serge Haroche
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Paper Abstract

Silica microspheres behave as efficient optical microresonators when small-volume whispering-gallery modes (WGMs) are used. We have realized a cryogenic set-up to work with microspheres immersed in a superfluid helium bath. Quality factors up to 109 have been obtained at 2 K. In this environment, we have been able to observe a dispersive bistable behavior of the WGM resonances, due to the weak intrinsic Kerr optical nonlinearity of silica, with a threshold power of 10 (mu) W only. This result opens the way to the realization of thresholdless microlaser, based on a rare-earth doped silica microsphere and to other Cavity-QED projects with microspheres at low temperatures.

Paper Details

Date Published: 25 February 1999
PDF: 8 pages
Proc. SPIE 3736, ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements, (25 February 1999); doi: 10.1117/12.340110
Show Author Affiliations
Valerie Lefevre-Seguin, Ecole Normale Superieure (France)
F. Treussart, Ecole Normale Superieure (France)
Vladimir S. Ilchenko, M.V. Lomonosov Moscow State Univ. (United States)
Jean-Francois Roch, Ecole Normale Superieure (France)
Jean Hare, Ecole Normale Superieure (France)
J.-M. Raimond, Ecole Normale Superieure (France)
Serge Haroche, Ecole Normale Superieure (France)

Published in SPIE Proceedings Vol. 3736:
ICONO '98: Quantum Optics, Interference Phenomena in Atomic Systems, and High-Precision Measurements
Anatoli V. Andreev; Sergei N. Bagayev; Anatoliy S. Chirkin; Vladimir I. Denisov, Editor(s)

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