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Large scale manipulation of the dark spot by phase modulation of azimuthally polarized light
Chen, Weiguo; Wang, Jiong; Zhao, Zeyu; Wang, Changtao; Wang, Yanqin; Yao, Na; Luo, Xiangang
Source PublicationOptics Communications
Volume349Pages:125-131
2015
Language英语
ISSN0030-4018
DOI10.1016/j.optcom.2015.03.024
Indexed BySCI ; Ei
WOS IDWOS:000357551900021
Subtype期刊论文
AbstractA new method is proposed to focus azimuthally polarized beam into an ultra-small or ultra-big dark spot under high numerical aperture lens system. Manipulated by proper designed binary 0-π phase plate, an ultra small dark spot regardless of side-lobe intensity is generated with main-lobe peak to peak distance shrunk to 0.24λ, which is 46% of the case without phase plate. For potential applications, shrinking the dark spot and suppressing the side-lobe intensity are analyzed, and several cases of squeezed dark spots with different levels of side-lobe intensities are presented. Additionally, using a two-zone phase plate to enlarge the dark spot is investigated in this paper, and an enlarged dark spot is readily acquired with the main-lobe peak to peak distance in a range of 100%-200%. The advantages of this method are its large scale manipulation of the dark spot size and its high performance in suppressing side-lobe intensity, which is of great worth in enhancing the performance of many systems such as optical tweezers and stimulated emission depletion (STED) microscope. © 2015 Elsevier B.V.; A new method is proposed to focus azimuthally polarized beam into an ultra-small or ultra-big dark spot under high numerical aperture lens system. Manipulated by proper designed binary 0-π phase plate, an ultra small dark spot regardless of side-lobe intensity is generated with main-lobe peak to peak distance shrunk to 0.24λ, which is 46% of the case without phase plate. For potential applications, shrinking the dark spot and suppressing the side-lobe intensity are analyzed, and several cases of squeezed dark spots with different levels of side-lobe intensities are presented. Additionally, using a two-zone phase plate to enlarge the dark spot is investigated in this paper, and an enlarged dark spot is readily acquired with the main-lobe peak to peak distance in a range of 100%-200%. The advantages of this method are its large scale manipulation of the dark spot size and its high performance in suppressing side-lobe intensity, which is of great worth in enhancing the performance of many systems such as optical tweezers and stimulated emission depletion (STED) microscope. © 2015 Elsevier B.V.
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Document Type期刊论文
Identifierhttp://ir.ioe.ac.cn/handle/181551/6901
Collection微细加工光学技术国家重点实验室(开放室)
Corresponding AuthorLuo, Xiangang
Affiliation State Key Laboratory of Optical Technologies on Nano-Fabrication and Micro-Engineering, Institute of Optics and Electronics, Chinese Academy of Sciences, P.O. Box 350, Chengdu, China
Recommended Citation
GB/T 7714
Chen, Weiguo,Wang, Jiong,Zhao, Zeyu,et al. Large scale manipulation of the dark spot by phase modulation of azimuthally polarized light[J]. Optics Communications,2015,349:125-131.
APA Chen, Weiguo.,Wang, Jiong.,Zhao, Zeyu.,Wang, Changtao.,Wang, Yanqin.,...&Luo, Xiangang.(2015).Large scale manipulation of the dark spot by phase modulation of azimuthally polarized light.Optics Communications,349,125-131.
MLA Chen, Weiguo,et al."Large scale manipulation of the dark spot by phase modulation of azimuthally polarized light".Optics Communications 349(2015):125-131.
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