Photons confined in hollow microspheres
- 19 February 2001
- journal article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 78 (8), 1032-1034
- https://doi.org/10.1063/1.1350423
Abstract
Incorporation of CdSe quantum dots into a thin (<1 μm) surface shell of polymer microspheres (R∼2–4 μm) is achieved. The room-temperature emission spectra of single, hollow microcavities show several, spectrally well-separated cavity modes in the red-orange spectral range which have been assigned to high-Q whispering gallery modes (WGM) with radial quantum number n=1 and high angular quantum number l. An enhancement of the cavity finesse Q by a factor of about 10 with respect to CdSe-doped bulk polymer microspheres is found.Keywords
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