Optical properties of microfabricated fully-metal-coated near-field probes in collection mode
JOSA A, Vol. 22, Issue 7, pp. 1432-1441 (2005)
http://dx.doi.org/10.1364/JOSAA.22.001432
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Abstract
A study of the optical properties of microfabricated, fully-metal-coated quartz probes collecting longitudinal and transverse optical fields is presented. The measurements are performed by raster scanning the focal plane of an objective, focusing azimuthally and radially polarized beams by use of two metal-coated quartz probes with different metal coatings. A quantitative estimation of the collection efficiencies and spatial resolutions in imaging both longitudinal and transverse fields is made. Longitudinally polarized fields are collected with a resolution approximately 1.5 times higher as compared with transversely polarized fields, and this behavior is almost independent of the roughness of the probe's metal coating. Moreover, the coating roughness is a critical parameter in the relative collection efficiency of the two field orientations.
© 2005 Optical Society of America
OCIS Codes
(110.2970) Imaging systems : Image detection systems
(180.5810) Microscopy : Scanning microscopy
(260.3910) Physical optics : Metal optics
(260.5430) Physical optics : Polarization
Citation
Emiliano Descrovi, Luciana Vaccaro, Laure Aeschimann, Wataru Nakagawa, Urs Staufer, and Hans-Peter Herzig, "Optical properties of microfabricated fully-metal-coated near-field probes in collection mode," J. Opt. Soc. Am. A 22, 1432-1441 (2005)
http://www.opticsinfobase.org/josaa/abstract.cfm?URI=josaa-22-7-1432
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