Spectral tuning and near-field imaging of photonic crystal microcavities
| Autor: | Laurent Balet, Anna Vinattieri, Lianhe Li, Marco Francardi, Francesco Riboli, Diederik S. Wiersma, Marcello Colocci, C. Monat, Silvia Vignolini, Massimo Gurioli, Andrea Fiore, Annamaria Gerardino, Romuald Houdré, Francesca Intonti, C. Zinoni |
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| Přispěvatelé: | Photonics and Semiconductor Nanophysics, Semiconductor Nanophotonics |
| Jazyk: | angličtina |
| Rok vydání: | 2008 |
| Předmět: |
Materials science
Local density of states Single Quantum-Dot business.industry Resonance Physics::Optics Condensed Matter Physics Lambda Nanocavity Electronic Optical and Magnetic Materials law.invention Optics Optical microscope Quantum dot law Electric field Photonic crystals near-field spectroscopy business Image resolution Photonic crystal |
| Zdroj: | Physical Review B, 78(4):041401, 041401-1/4. American Physical Society 78 (2008): 041401. info:cnr-pdr/source/autori:F. Intonti, S. Vignolini, F. Riboli, A. Vinattieri, D. S. Wiersma, M. Colocci, L. Balet, C. Monat, C. Zinoni, L. H. Li, R. Houdré, M. Francardi, A. Gerardino, A. Fiore, M. Gurioli/titolo:Spectral tuning and near-field imaging of photonic crystal microcavities/doi:/rivista:/anno:2008/pagina_da:041401/pagina_a:/intervallo_pagine:041401/volume:78 |
| ISSN: | 1098-0121 |
| Popis: | We experimentally observe a sizable and reversible spectral tuning of the resonances of a two-dimensional photonic crystal microcavity induced by the introduction of a subwavelength size glass tip. The comparison between experimental near-field data, collected with lambda/6 spatial resolution, and results of numerical calculations shows that the spectral shift induced by the tip is proportional to the local electric field intensity of the cavity mode. This observation proves that the electromagnetic local density of states in a microcavity can be directly measured by mapping the tip-induced spectral shift with a scanning near-field optical microscope. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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