Nonlinear Metasurface for Simultaneous Control of Spin and Orbital Angular Momentum in Second Harmonic Generation Li, Guixin ; Wu, Lin ; Li, King F. ; Chen, Shumei ; Schlickriede, Christian ; Xu, Zhengji ; Huang, Siya ; Li, Wendi ; Liu, Yanjun ; Pun, Edwin Y. B. ; Zentgraf, Thomas ; Cheah, Kok W. ; Luo, Yu ; Zhang, Shuang Abstract Publication: Nano Letters Pub Date: December 2017 DOI: 10.1021/acs.nanolett.7b04451 Bibcode: 2017NanoL..17.7974L