23 October 2009 Focal properties of cylindrically polarized beams by a high numerical aperture parabolic mirror
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Abstract
In this article, the focal properties of cylindrically polarized beams through a high numerical aperture parabolic mirror are numerically investigated. The vector field distributions within the focal region for cylindrically polarized beams are calculated by using the Richards-Wolf vectorial diffraction theory. It shows that the three-dimensional intensity distributions in the vicinity of the focus is dependent on the polarization rotation angle, topological charge and numerical aperture value. Additionally, some interesting focal volume structures, such as adjustably confined flat-topped focus, doughnut focal hole can be obtained by controlling polarization rotator angle. The tightly focused cylindrically polarized beams by a high numerical aperture parabolic mirror have possible applications in particle acceleration, optical trapping and manipulating, single molecule imaging and high resolution imaging microscopy, et al.
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Lina Guo, Zhilie Tang, Chongqing Liang, Jinglin Liu, "Focal properties of cylindrically polarized beams by a high numerical aperture parabolic mirror", Proc. SPIE 7517, Photonics and Optoelectronics Meetings (POEM) 2009: Optical Storage and New Storage Technologies, 75170A (23 October 2009); doi: 10.1117/12.843638; https://doi.org/10.1117/12.843638
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