@inproceedings{6f2fb0700b64448087ee43be6d465f71,
title = "Focusing by an arbitrary opening paraboloid mirror and its application in confocal scanning microscopy",
abstract = "Focusing of the plane wave with radially polarized electric field by an arbitrary opening paraboloid mirror is analyzed using a rigorous vectorial diffraction theory, i.e., Stratton-Chu integral. In the vicinity of the focus, far-field approximation conditions are used to simplify the derived integrals with sufficiently high accuracy. It is found that a noticeable deviation of the approximate integral, as characterized by a phenomenon of focal shift, from the exact integral can be observed when the maximum focusing semi-angle {\'a} below π/9. For {\'a}=π/2, the radial spot size reduces to below 0.40{\"e} if cutting off the central segment, larger than π/4, of the paraboloid mirror. The sharp focusing property of the paraboloid mirror has the potential application in super-resolution confocal scanning microscopy. Specific confocal scanning arrangements are provided and remarked.",
keywords = "Vectorial diffraction, confocal microscopy, paraboloid mirror, polarization",
author = "Tao Liu and Jiubin Tan and Yuhang Wang and Wang Chao and Jian Liu",
year = "2013",
doi = "10.1117/12.2014045",
language = "英语",
isbn = "9780819495501",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Eighth International Symposium on Precision Engineering Measurements and Instrumentation",
note = "8th International Symposium on Precision Engineering Measurements and Instrumentation ; Conference date: 08-08-2012 Through 11-08-2012",
}