Observation of whispering gallery modes in cathode luminescence in TiO2:Eu3+ microspheres
We report cavity enhanced periodic structures in cathode luminescence spectra in TiO2:Eu3+ microspheres ranging from 6.2to12.2μm in diameter. The spectral structures observed at the accelerating voltage below 10kV are attributed to the lower order whispering galley modes, while the additional compon...
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| Veröffentlicht in: | Applied physics letters 2006-08, Vol.89 (6) |
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| container_title | Applied physics letters |
| container_volume | 89 |
| creator | Tomita, Makoto Totsuka, Kouki Ikari, Hiroshi Ohara, Kenji Mimura, Hidenori Watanabe, Hideyuki Kume, Hiroshi Matsumoto, Takahiro |
| description | We report cavity enhanced periodic structures in cathode luminescence spectra in TiO2:Eu3+ microspheres ranging from 6.2to12.2μm in diameter. The spectral structures observed at the accelerating voltage below 10kV are attributed to the lower order whispering galley modes, while the additional components appearing at 20kV are to the higher order modes within the microsphere. These observations illustrate that the basic properties of phosphors can be advanced from the point of view of cavity quantum electrodynamics by fabricating a microcavity structure onto a single phosphor crystal. |
| doi_str_mv | 10.1063/1.2335578 |
| format | Article |
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The spectral structures observed at the accelerating voltage below 10kV are attributed to the lower order whispering galley modes, while the additional components appearing at 20kV are to the higher order modes within the microsphere. 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| ispartof | Applied physics letters, 2006-08, Vol.89 (6) |
| issn | 0003-6951 1077-3118 |
| language | eng |
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| source | AIP Journals Complete; AIP Digital Archive |
| title | Observation of whispering gallery modes in cathode luminescence in TiO2:Eu3+ microspheres |
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