scholarly journals Efficient all-optical router and beam splitter for light with orbital angular momentum

2020 ◽  
Vol 28 (13) ◽  
pp. 19750
Author(s):  
T. H. Qiu ◽  
H. Li ◽  
M. Xie ◽  
Q. Liu ◽  
H. Y. Ma ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Beam Splitter ◽  
Optical Router ◽  
All Optical

Transmissive 2-bit anisotropic coding metasurface

2022 ◽  
Author(s):  
Pengtao Lai ◽  
Zenglin Li ◽  
Wei Wang ◽  
Jia Qu ◽  
Liang Wei Wu ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Electromagnetic Wave ◽  
Circular Polarization ◽  
Orbital Angular Momentum ◽  
Electromagnetic Waves ◽  
Beam Splitter ◽  
Far Field ◽  
Polarization Conversion ◽  
Field Patterns ◽  
Phase Profile

Abstract Coding metasurfaces have attracted tremendous interests due to unique capabilities of manipulating electromagnetic wave. However, archiving transmissive coding metasurface is still challenging. Here we propose a transmissive anisotropic coding metasurface that enables the independent control of two orthogonal polarizations. The polarization beam splitter and the OAM generator have been studied as typical applications of anisotropic 2-bit coding metasurface. The simulated far field patterns illustrate that the x and y polarized electromagnetic waves are deflected into two different directions, respectively. The anisotropic coding metasurface has been experimentally verified to realize an orbital angular momentum (OAM) beam with l = 2 of right-handed polarized wave, resulting from both contributions from linear-to-circular polarization conversion and the phase profile modulation. This work is beneficial to enrich the polarization manipulation field and develop transmissive coding metasurfaces.

A Compound Phase-Modulated Beam Splitter to Distinguish Both Spin and Orbital Angular Momentum

ACS Photonics ◽  
2019 ◽  
Vol 7 (1) ◽  
pp. 212-220 ◽  
Author(s):  
Xuesi Zhao ◽  
Xue Feng ◽  
Fang Liu ◽  
Kaiyu Cui ◽  
Wei Zhang ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Beam Splitter

Experimental realization of a resource-saving polarization-independent orbital-angular-momentum-preserving tunable beam splitter

2019 ◽  
Vol 44 (4) ◽  
pp. 755
Author(s):  
Ya-Ping Li ◽  
Fang-Xiang Wang ◽  
Wei Chen ◽  
Guo-Wei Zhang ◽  
Zhen-Qiang Yin ◽  
...  
Keyword(s):  
Angular Momentum ◽  
Orbital Angular Momentum ◽  
Beam Splitter ◽  
Resource Saving ◽  
Experimental Realization ◽  
Polarization Independent
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