在超表面中实现光自旋到轨道角动量转换的相干控制。

Coherent Control of Optical Spin-to-Orbital Angular Momentum Conversion in Metasurface.

机构信息

Center for Terahertz Waves and College of Precision Instrument and Optoelectronics Engineering, The Key Laboratory of Optoelectronics Information and Technology, Tianjin University, Tianjin, 300072, P. R. China.

College of Physics and Materials Science, Tianjin Normal University, Tianjin, 300387, P. R. China.

出版信息

Adv Mater. 2017 Feb;29(6). doi: 10.1002/adma.201604252. Epub 2016 Nov 30.

DOI:10.1002/adma.201604252

PMID:27900784

Abstract

Efficient control over the conversion of optical angular momentum from spin to orbital form in a metasurface system is achieved. Under coherent symmetric incidence, it can support nearly 100% conversion and unitary output, while it can support 50% conversion with 25% transmittance under one beam incidence.

摘要

在超表面系统中实现了对光角动量从自旋到轨道形式的高效转换的有效控制。在相干对称入射下，它可以支持近 100%的转换和单元输出，而在单光束入射下，它可以支持 50%的转换和 25%的透射率。