Title :
Direct observation of “pseudospin”-mediated vortex generation in photonic graphene
Author :
Daohong Song ; Liqin Tang ; Yi Zhu ; Ablowitz, Mark ; Paltoglou, Vassilis ; Efremidis, Nikolaos K. ; Jingjun Xu ; Zhigang Chen
Author_Institution :
Key Lab. of Weak-Light Nonlinear Photonics, Nankai Univ., Tianjin, China
Abstract :
We observe vortex generation by selective excitation of two honeycomb sublattices at the vicinity of Dirac points. Such vortices arise from graphene “pseudospin”, suggesting that “pseudospin” could be observable and possess real angular momentum.
Keywords :
angular momentum; graphene; optical lattices; optical vortices; C; Dirac points; angular momentum; honeycomb sublattices; photonic graphene; pseudospin-mediated vortex generation; Educational institutions; Equations; Graphene; Lattices; Mathematical model; Optical vortices; Photonics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2014 Conference on
Conference_Location :
San Jose, CA
