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

Huifang Zhang; Ming Kang; Xueqian Zhang; Wengao Guo; Changgui Lv; Yanfeng Li; Weili Zhang; Jiaguang Han

doi:10.1002/adma.201604252

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

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

Authors

Huifang Zhang¹, Ming Kang², Xueqian Zhang¹, Wengao Guo³, Changgui Lv³, Yanfeng Li¹, Weili Zhang^{1

4}, Jiaguang Han¹

Affiliations

¹ 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.
² College of Physics and Materials Science, Tianjin Normal University, Tianjin, 300387, P. R. China.
³ Advanced Photonics Center, Southeast University, Nanjing, 210096, P. R. China.
⁴ School of Electrical and Computer Engineering, Oklahoma State University, Stillwater, OK, 74078, USA.

PMID: 27900784
DOI: 10.1002/adma.201604252

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.

Keywords: Pancharatnam-Berry phase optical element; coherent control; phase discontinuities; terahertz.