聚焦高斯涡旋光束焦区电场和磁场的偏振奇点

罗亚梅; 高曾辉; 唐碧华; 吕百达

doi:10.7498/aps.63.154201

摘要

以高斯涡旋光束为例，研究了聚焦场中电场和磁场的偏振奇点变化规律. 结果表明，高斯涡旋光束经透镜聚焦后，在焦区存在二维和三维电场和磁场的偏振奇点，其位置一般不重合.适当改变与焦面的距离以及光阑截断参数等出现圆偏振奇点的移动、产生和湮没.不同二维和三维电场和磁场圆偏振奇点湮没所对应的各参数临界值不同.在二维电场中，几何焦面上会有V点的产生.

关键词:

Taking the Gaussian vortex beam as an example, the variation of electric and magnetic polarization singularities of focused Gaussian vortex beams is studied. It is shown that in the focal region there exist two- and three-dimensional (2D and 3D) electric and magnetic polarization singularities of focused Gaussian vortex beams, which do not coincide in general. By suitably varying the distance from the focal plane and the truncation parameter, the motion, creation, and annihilation of circular polarization singularities will take place. The critical valuse of the parameters at which a pair of circular polarization singularities of 2D and 3D electric and magnetic fields will annihilate, are not the same. In the 2D electric field the V-point may appear at the focal plane.

Keywords:

focused vortex beam /
electric and magnetic polarization singularities /
focal region

作者及机构信息

1.
泸州医学院生物医学工程系, 泸州 646000;

2.
宜宾学院计算物理重点实验室, 宜宾 644000;

3.
四川大学激光物理与化学研究所, 成都 610064

基金项目: 国家自然科学基金（批准号：61275203）和四川省科技厅自然科学基金（批准号：2013JY0100）资助的课题.

Authors and contacts

1.
Department of Biomedical Engineering, Luzhou Medical College, Luzhou 646000, China;

2.
Key Laboratory of Computational Physics, Yibin University, Yibin 644000, China;

3.
Institute of Laser Physics & Chemistry, Sichuan University, Chengdu 610064, China

Funds: Project supported by the National Natural Science Foundation of China (Grant No. 61275203), and the Natural Science Foundation of the Science and TechnologyDepartment of Sichuan Province (Grant No. 2013JY0100).

参考文献

[1]	Nye J F, Hajnal J V 1987 Proc. R. Soc. Lond. A 409 21
[2]
[3]
[4]	Soskin M S, Denisenko V G, Egorov R I 2004 Proc. of SPIE 5458 79
[5]
[6]	Angelsky O V, Ushenko A G, Ushenko Ye G 2006 J. Phys. D: Appl. Phys. 39 3547.
[7]	Hajnal J V 1990 Proc. R. Soc. Lond. A 430 413
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[9]
[10]	Berry M V 2004 J. Opt. A: Pure Appl. Opt. 6 475
[11]	Luo Y M, Lü B D, Tang B H, Zhu Y 2012 Acta Phys. Sin. 61 134202 (in Chinese) [罗亚梅, 吕百达, 唐碧华, 朱渊 2012 物理学报 61 134202]
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[13]	Schoonover R W, Visser T D 2006 Opt. Express 14 5733
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[15]
[16]	Luo Y M, Lü B D 2010 J. Opt. 12 115703
[17]	Hua L M, Chen B S, Chen Z Y, Pu J X 2011 Chin. Phys. B 20 014202
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[19]	Dennis M R, O'Holleran K, Padgett M J 2009 Progress in Optics 53 293
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[22]	Karman G P, Duijil A, Beijersbergen M W, Woerdman J P 1997 Appl. Opt. 36 8091
[23]	Freund I, Shvartsman N 1994 Phys. Rev. A 50 5164

施引文献

[1]	Nye J F, Hajnal J V 1987 Proc. R. Soc. Lond. A 409 21
[2]
[3]
[4]	Soskin M S, Denisenko V G, Egorov R I 2004 Proc. of SPIE 5458 79
[5]
[6]	Angelsky O V, Ushenko A G, Ushenko Ye G 2006 J. Phys. D: Appl. Phys. 39 3547.
[7]	Hajnal J V 1990 Proc. R. Soc. Lond. A 430 413
[8]
[9]
[10]	Berry M V 2004 J. Opt. A: Pure Appl. Opt. 6 475
[11]	Luo Y M, Lü B D, Tang B H, Zhu Y 2012 Acta Phys. Sin. 61 134202 (in Chinese) [罗亚梅, 吕百达, 唐碧华, 朱渊 2012 物理学报 61 134202]
[12]
[13]	Schoonover R W, Visser T D 2006 Opt. Express 14 5733
[14]
[15]
[16]	Luo Y M, Lü B D 2010 J. Opt. 12 115703
[17]	Hua L M, Chen B S, Chen Z Y, Pu J X 2011 Chin. Phys. B 20 014202
[18]
[19]	Dennis M R, O'Holleran K, Padgett M J 2009 Progress in Optics 53 293
[20]
[21]
[22]	Karman G P, Duijil A, Beijersbergen M W, Woerdman J P 1997 Appl. Opt. 36 8091
[23]	Freund I, Shvartsman N 1994 Phys. Rev. A 50 5164

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