Near-field observation of subwavelength confinement of photoluminescence by a photonic crystal microcavity

Publication Type:
Journal Article
Optics Letters, 2006, 31 (14), pp. 2160 - 2162
Issue Date:
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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. © 2006 Optical Society of America.
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