Generation and dynamics of optical beams with polarization singularities

被引：175

作者：

Cardano, Filippo ^{[1
]}

Karimi, Ebrahim ^{[1
]}

Marrucci, Lorenzo ^{[1
,2
]}

de Lisio, Corrado ^{[1
,2
]}

Santamato, Enrico ^{[1
,3
]}

机构：

[1] Univ Naples Federico II, Dipartimento Fis, I-80126 Naples, Italy

[2] CNR SPIN, I-80126 Naples, Italy

[3] CNISM Consorzio Nazl Interuniv Sci Fis Mat, Naples, Italy

来源：

OPTICS EXPRESS | 2013年 / 21卷 / 07期

基金：

欧盟第七框架计划;

关键词：

TOPOLOGICAL CHARGE; VORTEX-BEAMS; Q-PLATES; LIGHT; VORTICES; FIELDS; WAVES; MODES;

D O I：

10.1364/OE.21.008815

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present a convenient method to generate vector beams of light having polarization singularities on their axis, via partial spin-to-orbital angular momentum conversion in a suitably patterned liquid crystal cell. The resulting polarization patterns exhibit a C-point on the beam axis and an L-line loop around it, and may have different geometrical structures such as "lemon", "star", and "spiral". Our generation method allows us to control the radius of L-line loop around the central C-point. Moreover, we investigate the free-air propagation of these fields across a Rayleigh range. (c) 2013 Optical Society of America

引用

页码：8815 / 8820

页数：6

共 24 条

[1] Light-induced spiral mass transport in azo-polymer films under vortex-beam illumination [J].