Near-field observation of subwavelength confinement of photoluminescence by a photonic crystal microcavity |
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Authors: | Louvion Nicolas Rahmani Adel Seassal Christian Callard Ségolène Gérard Davy de Fornel Frédérique |
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Institution: | Laboratoire d'Elecronique, Optoélectronique et Microsystèmes, Ecole Centrale de Lyon, Ecully Cedex, France. |
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Abstract: | We present a direct, room-temperature near-field optical study of light confinement by a subwavelength defect microcavity in a photonic crystal slab containing quantum-well sources. The observations are compared with three-dimensional finite-difference time-domain calculations, and excellent agreement is found. Moreover, we use a subwavelength cavity to study the influence of a near-field probe on the imaging of localized optical modes. |
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