Optical properties of microfabricated fully-metal-coated near-field probes in collection mode

被引：42

作者：

Descrovi, E ^{[1
]}

Vaccaro, L ^{[1
]}

Aeschimann, L ^{[1
]}

Nakagawa, W ^{[1
]}

Staufer, U ^{[1
]}

Herzig, HP ^{[1
]}

机构：

[1] Univ Neuchatel, Inst Microtechnol, CH-2000 Neuchatel, Switzerland

来源：

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION | 2005年 / 22卷 / 07期

关键词：

D O I：

10.1364/JOSAA.22.001432

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

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. (C) 2005 Optical Society of America.

引用

页码：1432 / 1441

页数：10

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