偶极子涡旋光束的光斑及其传输研究

在近轴光束传输理论的前提下，推导了偶极子涡旋光束传输一段距离后光电场的解析表达式，同时得到了观测平面上的光强分布。研究表明，偶极子涡旋光束在传输过程中，双核的倾角会逐渐发生改变，拓扑电荷数较大，观测平面上光斑的中心区域越趋近于圆形暗斑，离心参数较大时，观测平面上光斑的中心区域趋近于矩形亮斑。极值理论分析进一步表明，当满足mw20>d2时，观测平面上存在7个光强极值点，否则存在5个光强极值点。这些结论对分析和了解偶极子涡旋光束能提供指导作用。

Abstract

Based on the propagation theory of paraxial approximation for optical beam, the analytical expression of the optical electric field is derived for the dipole vortex beam during propagation. The intensity distribution on the observation plane is obtained at the same time. It is shown that the obliquity of the dipole cores of the beam will change during propagation. While the topological charge is bigger, the center of spot on the observation plane tends to be a circular macula; while the off-center parameter is bigger, the center of the spot on the observation tends to be a rectangular bright spot. Further analysis on the extremum of the intensity reveals that if mw20>d2, there exists seven extreme points of light intensity on the observation plane; or else there exists five points.

参考文献

[1] L. Z. Rao, J. X. Pu. Spatial correlation properties of focused partially coherent vortex beams［J］. J. Opt. Soc. Am. A, 2007, 24(8): 2242～2247

[2] Z. Y. Chen, J. X. Pu. Stochastic electromagnetic vortex beam and its propagation［J］. Phys. Lett. A, 2008, 372(15): 2734～2740

[3] A. L. Yang, E. T. Zhang, X. L. Ji et al.. Propagation properties of partially coherent Hermite-Cosh-Gaussian beams through atmospheric turbulence［J］. Opt. Laser Technol., 2009, 41(6): 714～722

[4] Georgi Maleshkov, Dragomir N. Neshev, Alexander Dreischuh. Nonlinear beam steering by fractional vortex dipoles［J］. Phys. Rev. A, 2009, 80(5): 053828

[5] M. Babiker, C. R. Bennett, D. L. Andrews et al.. Orbital angular momentum exchange in the interaction of twisted light with molecules［J］. Phys. Rev. Lett., 2002, 89(14): 143601

[6] 陆璇辉, 黄慧琴, 赵承良等. 涡旋光束和光学涡旋［J］. 激光与光电子学进展, 2008, 45(1): 50～56

Lu Xuanhui, Huang Huiqin, Zhao Chenliang et al.. Optical vortex beams and optical votex［J］. Laser & Optoelectron. Progress, 2008, 45(1): 50～56

[7] 吴慧云, 黄值河, 吴武明等. 高斯涡旋光束分析及其在中继镜系统中的应用［J］. 光学学报, 2011, 31(4): 0414002

Wu Huiyun, Huang Zhihe, Wu Wuming et al.. Analysis of Gaussian-vortex beam and its application in a relay mirror system［J］. Acta Optica Sinica, 2011, 31(4): 0414002

[8] 刘永欣, 陈子阳, 蒲继雄. 涡旋光束经叉形光栅的衍射特性［J］. 中国激光, 2011, 38(3): 0302012

Liu Yongxin, Chen Ziyang, Pu Jixiong. Diffraction characteristics of vortex beams by a fork-shaped grating［J］. Chinese J. Lasers, 2011, 38(3): 0302012

[9] 赵肇雄, 刘勇. 初级慧差对圆偏振涡旋贝塞尔高斯光束聚焦场的影响［J］. 中国激光, 2010, 37(3): 739～742

Zhao Zhaoxiong, Liu Yong. Effect of primary coma aberration on focusing of a circularly polarized vortex Bessel-Gaussian beams［J］. Chinese J. Lasers, 2010, 37(3): 739～742

[10] 梁重庆, 唐志列, 郭利娜. 初级球差对椭圆偏振涡旋光束深聚焦场的影响［J］. 光学学报, 2010, 30(11): 3317～3322

Liang Chongqing, Tang Zhilie, Guo Lina. Effect of primary spherical aberration on tight focusing of elliptically polarized vortex beams［J］. Acta Optica Sinica, 2010, 30(11): 3317～3322

[11] 李海莲, 杨德兴, 任小元等. 体全息产生光学涡旋的实验研究［J］. 光学学报, 2010, 31(2): 503～507

Li Hailian, Yang Dexing, Ren Xiaoyuan et al.. Experimental investigation of optical vortex generated by volume holography［J］. Acta Optica Sinica, 2010, 31(2): 503～507

[12] L. Mandel, E. Wolf. Optical Coherence and Quantum Optics［M］. Cambridge: Cambridge University Press, 1995. 289

朱牡丹, 丁攀峰. 偶极子涡旋光束的光斑及其传输研究[J]. 激光与光电子学进展, 2012, 49(6): 062603. Zhu Mudan, Ding Panfeng. Research on Dipole Vortex Beam and Its Propagation[J]. Laser & Optoelectronics Progress, 2012, 49(6): 062603.

偶极子涡旋光束的光斑及其传输研究

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