Inicio  /  Applied Sciences  /  Vol: 9 Par: 5 (2019)  /  Artículo
ARTÍCULO
TITULO

Three-Dimensional Optical Spin Angular Momentum Flux of a Vector Beam with Radially-Variant Polarization in Near Field

Ying Guan    
Li-Xin Zhong    
Chaoyang Qian and Rui-Pin Chen    

Resumen

The near-field characteristics of a radially-variant vector beam (RVVB) are analyzed by using the vectorial angular spectrum method. The non-paraxial RVVB can be decomposed into the propagating wave and the evanescent wave in near field. The coherent superposition of the longitudinal and transverse components of the RVVB results in a three-dimensional (3D) profile of the spin angular momentum flux density (SAM-FD). The evanescent wave part dominates the near field of a highly non-paraxial RVVB. The longitudinal component has a large impact on the 3D shape of the optical SAM-FD. Therefore, the 3D SAM-FD configuration of the RVVB can be manipulated by choosing the initial states of polarization arrangement. In particular, the transverse SAM-FD with a spin axis orthogonal to the propagation direction offers a promising range of applications spanning from nanophotonics and plasmonics to biophotonics.

 Artículos similares

       
 
Mariuca Gartner, Mihai Anastasescu, Hermine Stroescu, Jose Maria Calderon-Moreno, Silviu Preda, Octavian-Gabriel Simionescu, Andrei Avram and Octavian Buiu    
Nanocrystalline graphite (NCG) layers represent a good alternative to graphene for the development of various applications, using large area, complementary metal-oxide semiconductor (CMOS) compatible technologies. A comprehensive analysis of the physical... ver más
Revista: Coatings

 
Gang Wang, Gang Ren, Xinye Hong, Xun Peng, Wenbin Li and Eamonn O?Neill    
Augmented reality (AR) technologies can blend digital and physical space and serve a variety of applications intuitively and effectively. Specifically, wearable AR enabled by optical see-through (OST) AR head-mounted displays (HMDs) might provide users w... ver más
Revista: Information

 
Hongmei Jiang, Xu Peng, Wenbo Xie, Shaopeng Lu and Yongmin Gu    
The high-speed Over-Tip-Leakage (OTL) flow has a significant impact on the aerodynamic performance of the High-Pressure Turbine (HPT) passage and generates high thermal load for the blade tip. Different tip sealing and cooling design strategies are appli... ver más
Revista: Aerospace

 
Hyeonah Jeong, Eunsu Lee and Hoon Yoo    
This paper presents a new method for extracting an elemental image array in three-dimensional (3D) integral imaging. To reconstruct 3D images in integral imaging, as the first step, a method is required to accurately extract an elemental image array from... ver más
Revista: Applied Sciences

 
Cheng-Jian Lin, Chun-Hui Lin and Shyh-Hau Wang    
In industrial processing, workpiece quality and processing time have recently become important issues. To improve the machining accuracy and reduce the cutting time, the cutting feed rate will have a significant impact. Therefore, how to plan a dynamic c... ver más
Revista: Applied Sciences