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Titre du Document
Local optical diagnostics of nanostructures. SNOM investigation of the electromagnetic field interaction with the nanostructures
Auteur(s)
BASHEVOY Maxim V. ; EZHOV Alexander A. ; MAGNITSKII Sergey A. ; ...
Corporation(s) du ou des auteurs
International Society for Optical Engineering Bellingham WA USA (Organisateur de congrès)
Résumé
Experimental and calculated results of the investigation of electromagnetic field distribution including its polarization characteristics in the vicinity of the nanostructures are presented. Experimental investigation was realized by aperture type scanning near field optical microscopes (SNOM) which operated in collection mode and provided both high spatial resolution and large scanning range. Shear force detection was used for the control of aperture to surface gap. Normal resolution which allows resolving 0.3 nm height surface steps was demonstrated for this gap control system. Theoretical computation of electromagnetic field distribution was realized by finite-difference time-domain (FDTD) method. Experimental three-dimensional maps of intensity and polarization distribution as result of light diffraction at nanoaperture in metal screen, dielectric and metallized nanocylinders were obtained. The qualitative difference between the orthogonal polarized component distributions near nanoaperture in aluminium screen was experimentally shown. The electromagnetic field concentration in the proximity of the dielectric nanocylinders was observed. This observation gives good fit with the results of FDTD computations. Spiral type electromagnetic field distribution pattern was experimentally observed in the proximity of metallized nanocylinders, which is unexpected from both experimental and theoretical points of view.
Editeur
SPIE
Type du document
Conférence : Micro- and nanoelectronics. Conference, Zvenigorod, RUS, 2003-10-06
Identifiant
ISSN : ISBN : 0-8194-5324-2
Source
SPIE proceedings series A. 2004, vol. 5401, pp. 561-572 [12 pages] [bibl. : 18 ref.]
Langue
Anglais
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