Orbital angular momentum density characteristics of tightly focused polarized Laguerre-Gaussian beam

被引：7

作者：

Zhao, Yufeng ^{[1
]}

Yao, Yong ^{[1
]}

Xu, Xiaochuan ^{[1
]}

Xu, Ke ^{[1
]}

Yang, Yanfu ^{[1
]}

Tian, Jiajun ^{[1
]}

机构：

[1] Harbin Inst Technol, Sch Elect & Informat Engn, State Key Lab Tunable Laser Technol, Shenzhen 518055, Peoples R China

来源：

APPLIED OPTICS | 2020年 / 59卷 / 24期

基金：

中国国家自然科学基金;

关键词：

OPTICAL VORTEX; DIFFRACTION; VECTOR; PROPAGATION; LIGHT; SPIN;

D O I：

10.1364/AO.399033

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The orbital angular moment (OAM) of light has been proved to be useful in plenty of applications. By transmitting the OAM of the focused light field to a particle, it will be orbited around the optical axis. Therefore, it is necessary to study the OAM distribution of the focused light field used to manipulate the particles. In this application, the widely used paraxial approximation is no longer sufficient due to the tightly focused beam. We employ the higher-order Poincare sphere to represent the Laguerre-Gaussian (LG) beams with arbitrary polarization. Then the Rayleigh-Sommerfeld integral method and the q-parameter method are used to derive the analytical expression of the light field on the focal plane. Based on this, the OAM density expression of the tightly focused LG beam is derived. In the numerical simulation, we study and analyze the unique intensity distributions and OAM distributions of tightly focused linear polarized, radial polarized, and circular polarized LG beams. The results could be leveraged to further explore the applications of the polarized vortex beam. (C) 2020 Optical Society of America

引用

页码：7396 / 7407

页数：12

共 35 条

[1] The Poynting vector in Laguerre-Gaussian beams and the interpretation of their angular momentum density [J].

Allen, L ;

Padgett, MJ .

OPTICS COMMUNICATIONS, 2000, 184 (1-4) :67-71

[2] ORBITAL ANGULAR-MOMENTUM OF LIGHT AND THE TRANSFORMATION OF LAGUERRE-GAUSSIAN LASER MODES [J].

ALLEN, L ;

BEIJERSBERGEN, MW ;

SPREEUW, RJC ;

WOERDMAN, JP .

PHYSICAL REVIEW A, 1992, 45 (11) :8185-8189

[3] Turbulence-induced channel crosstalk in an orbital angular momentum-multiplexed free-space optical link [J].

Anguita, Jaime A. ;

Neifeld, Mark A. ;

Vasic, Bane V. .

APPLIED OPTICS, 2008, 47 (13) :2414-2429

[4] Effect of coma on tightly focused cylindrically polarized vortex beams [J].

Anita, G. Therese ;

Umamageswari, N. ;

Prabakaran, K. ;

Pillai, T. V. S. ;

Rajesh, K. B. .

OPTICS AND LASER TECHNOLOGY, 2016, 76 :1-5

[5]

[Anonymous], 2014, Table of Integrals, Series, and Products, DOI DOI 10.1016/B978-0-12-384933-5.00009-6

[6] A q-parameter approach to analysis of propagation, focusing, and waveguiding of radially polarized Gaussian beams [J].

Banerjee, Partha P. ;

Cook, Gary ;

Evans, Dean R. .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2009, 26 (06) :1366-1374

[7] ORBITAL ANGULAR-MOMENTUM AND NONPARAXIAL LIGHT-BEAMS [J].

BARNETT, SM ;

ALLEN, L .

OPTICS COMMUNICATIONS, 1994, 110 (5-6) :670-678

[8] On the natures of the spin and orbital parts of optical angular momentum [J].

Barnett, Stephen M. ;

Allen, L. ;

Cameron, Robert P. ;

Gilson, Claire R. ;

Padgett, Miles J. ;

Speirits, Fiona C. ;

Yao, Alison M. .

JOURNAL OF OPTICS, 2016, 18 (06)

[9] Spin-orbit interactions of light [J].

Bliokh, K. Y. ;

Rodriguez-Fortuno, F. J. ;

Nori, F. ;

Zayats, A. V. .

NATURE PHOTONICS, 2015, 9 (12) :796-808

[10] Orbital angular momentum of the laser beam and the second order intensity moments [J].

Gao, CQ ;

Wei, GH ;

Weber, H .

SCIENCE IN CHINA SERIES A-MATHEMATICS, 2000, 43 (12) :1306-1311

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