Visualizing the whispering gallery modes in a cylindrical optical microcavity

M.L.M. Balistreri, D.J.W. Klunder, F.C. Blom, A. Driessen, Hugo Hoekstra, Jeroen P. Korterik, L. Kuipers, N.F. van Hulst

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Whispering gallery modes in cylindrical integrated optics microcavities have, for what is to our knowledge the first time, been mapped with a photon scanning tunneling microscope. Optical images were obtained with a spatial resolution of 50 nm. By combination of information o­n the spatial optical distributions with wavelength-dependent measurements, an unexpectedly rich variety of intracavity phenomena, such as polarization conversion and interference of copropagating and counterpropagating modes, could be directly observed. A quantitative comparison of the experimental data with computer simulations results in a comprehensive understanding of the various whispering gallery modes inside the microcavity.
Original languageEnglish
Pages (from-to)1829-1831
Number of pages3
JournalOptics letters
Issue number24
Publication statusPublished - 1999


  • METIS-128621
  • IR-23822


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