Results 281 to 290 of about 21,769 (310)

Focusing of radially polarized beam with radial cosine phase wavefront

Optik, 2010
Radially polarized beam has gained much interest recently due to its properties and applications. In this article, the focusing properties of radially polarized beam with radial cosine phase wavefront are investigated theoretically. Results show that when the radially polarized beam with radial cosine wavefront phase is focused, the focal pattern ...
Xiumin Gao, Jinsong Li, Zhuo Li, Jian Wang, Songlin Zhuang   +4 more
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Generation of a plasmonic radially polarized vector beam with linearly polarized illumination

Optics Letters, 2018
Polarization state of a wave field can be manipulated through the plasmonic metasurface consisting of orthogonal nanoslit pairs; the output polarization angle is independent of the incident linearly polarized light and is highly dependent on the orientations of nanoslit pairs.
Yu-Qin, Zhang, Xiang-Yu, Zeng, Rui-Rui, Zhang, Zi-Jun, Zhan, Xing, Li, Li, Ma, Chun-Xiang, Liu, Chang-Wei, He, Chuan-Fu, Cheng   +8 more
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Radial Polarization Beams in Nanophotonics

Frontiers in Optics 2011/Laser Science XXVII, 2011
A superresolution volume of the focal spot and an axially-superresolved quasi-spherical focal spot can be produced for three-dimensional nanaophotonic fabrication, when radially polarized beams are focused by a high numerical-aperture objective.
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Generation of azimuthally and radially polarized beams by coherent polarization beam combination

Optics Letters, 2012
A new architecture for generating pure azimuthally and radially polarized beams is presented. It involves coherent polarization beam combination of two orthogonally polarized LP(11) fiber modes. Experimental results reveal that high purely polarized (polarization purity of 95% or better) azimuthal and radial beams can be generated.
Pengfei, Ma, Pu, Zhou, Yanxing, Ma, Xiaolin, Wang, Rongtao, Su, Zejin, Liu   +5 more
openaire   +2 more sources

Formation of radial and azimuthal polarization of light

Journal of Optical Technology, 2007
This paper discusses a method of obtaining and controlling radial and azimuthal polarization of light beams on the basis of conical refraction and electrooptics. An optical diagram of such a polarization converter is described, and a mathematical transformation of the phase of the orthogonal polarizations is considered.
A. I. Konoĭko, S. N. Zhdanovich
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Interfering SPR Sensor with Radial Polarization

Frontiers in Optics 2009/Laser Science XXV/Fall 2009 OSA Optics & Photonics Technical Digest, 2009
For a collinear SPR sensor, the refractive-index-sensing range was constrained by objective lens. Utilizing the interfering SPPs, we demonstrated a new scheme to extend the measured range from 1.3 to 1.5 in a 1.45-NA microscopy.
Tzu-Hsiang Lan, Chung-Hao Tien
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Optical fiber based radial polarizer

Optics Communications, 2012
Abstract In this paper we present a new type of optical fiber aiming to radially polarize the electrical field. This special device is composed of a tapered fiber having a classical core while on top of its external surface, radially oriented nanorods are disposed. The tails of the propagated wave are interacting with those radially oriented nanorods.
David Elbaz, Sophia Buhbut, Benjamin Zeev Kupfer, Arie Zaban, Zeev Zalevsky   +4 more
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Transformation problem for radiation with radial polarization

Optics and Spectroscopy, 2001
The propagation and transportation of laser beams with radial polarization (RP beam), possessing a high efficiency in their interaction with matter, are studied. The effect of different elements of an optical system on the polarization state of RP beams is analyzed.
A. V. Nesterov, V. G. Niz’ev, A. L. Sokolov   +2 more
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The effect of radial polarization in multiphoton lithography

SPIE Proceedings, 2015
Considering the axially symmetric polarization and intensity distribution, radially polarized (RP) laser beam has comparatively higher axial component of electric field and smaller size of focal spot compared to linearly polarized (LP) laser. In this study, the effect of radial polarization on multiphoton fabrication has been studied, and polymer spots
Le Lin, Mei-Ling Zheng, Xian-Zi Dong, Xuan-Ming Duan, Zhen-Sheng Zhao   +4 more
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Radially Polarized Ion Channel Laser

Proceedings of the 2005 Particle Accelerator Conference, 2006
Radially polarized radiation is amplified by a free electron laser (FEL) in which the undulator is an ion channel with uniform density. For long betatron wavelengths and low gain per pass, the gain at a given distance from the axis is three-eighths the gain of a periodic ion channel laser with the same wiggler parameter.
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