Anharmonic propagation of two-dimensional beams carrying orbital angular momentum in a harmonic potential

被引：65

作者：

Zhang, Yiqi ^{[1
,2
]}

Liu, Xing ^{[1
,2
]}

Belic, Milivoj R. ^{[3
]}

Zhong, Weiping ^{[4
]}

Wen, Feng ^{[1
,2
]}

Zhang, Yanpeng ^{[1
,2
]}

机构：

[1] Xi An Jiao Tong Univ, Minist Educ, Key Lab Phys Elect & Devices, Xian 710049, Peoples R China

[2] Xi An Jiao Tong Univ, Shaanxi Key Lab Informat Photon Tech, Xian 710049, Peoples R China

[3] Texas A&M Univ Qatar, Sci Program, Doha, Qatar

[4] Shunde Polytech, Dept Elect & Informat Engn, Shunde 528300, Peoples R China

来源：

OPTICS LETTERS | 2015年 / 40卷 / 16期

基金：

中国国家自然科学基金;

关键词：

NONLINEAR ACCELERATING BEAMS; LINEAR OPTICAL POTENTIALS; ENERGY AIRY BEAMS; GENERATION; TRANSFORMATION; INVERSION; SOLITONS; MEDIA;

D O I：

10.1364/OL.40.003786

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We analytically and numerically investigate an anharmonic propagation of two-dimensional beams in a harmonic potential. We pick noncentrosymmetric beams of common interest that carry orbital angular momentum. The examples studied include superposed Bessel-Gauss (BG), Laguerre-Gauss (LG), and circular Airy (CA) beams. For the BG beams, periodic inversion, phase transition, and rotation with periodic angular velocity are demonstrated during propagation. For the LG and CA beams, periodic inversion and variable rotation are still there but not the phase transition. On the whole, the "center of mass" and the orbital angular momentum of a beam exhibit harmonic motion, but the motion of the beam intensity distribution in detail is subject to external and internal torques and forces, causing it to be anharmonic. Our results are applicable to other superpositions of finite circularly asymmetric beams. (C) 2015 Optical Society of America

引用

页码：3786 / 3789

页数：4

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