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题名:
Large scale manipulation of the dark spot by phase modulation of azimuthally polarized light
作者: Chen, Weiguo; Wang, Jiong; Zhao, Zeyu; Wang, Changtao; Wang, Yanqin; Yao, Na; Luo, Xiangang
刊名: Optics Communications
出版日期: 2015
卷号: 349, 页码:125-131
学科分类: Light polarization - Numerical methods - Optical tweezers - Phase modulation - Stimulated emission
DOI: 10.1016/j.optcom.2015.03.024
通讯作者: Luo, Xiangang
文章类型: 期刊论文
中文摘要: 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.
英文摘要: 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.
收录类别: SCI ; Ei
项目资助者: 973 Program of China [2013CBA01700] ; Chinese Nature Science Grant [61138002, 61177013]
语种: 英语
WOS记录号: WOS:000357551900021
ISSN号: 0030-4018
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ioe.ac.cn/handle/181551/6901
Appears in Collections:微细加工光学技术国家重点实验室(开放室)_期刊论文

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作者单位: 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:
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.
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