Splitting of high-q mie modes induced by light backscattering in silica microspheres

D. S. Weiss, V. Sandoghdar, J. Hare, V. Lef È Vre-Seguin, J. M. Raimond, S. Haroche

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313 Scopus citations


We have observed that very high-Q Mie resonances in silica microspheres are split into doublets. This splitting is attributed to internal backscattering that couples the two degenerate whispering-gallery modes propagating in opposite directions along the sphere equator. We have studied this doublet structure by high-resolution spectroscopy. Time-decay measurements have also been performed and show a beat note corresponding to the coupling rate between the clockwise and counterclockwise modes. A simple model of coupled oscillators describes our data well, and the backscattering efficiency that we measure is consistent with what is observed in optical fibers.

Original languageEnglish (US)
Pages (from-to)1835-1837
Number of pages3
JournalOptics Letters
Issue number18
StatePublished - Sep 15 1995

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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