Title :
Asymmetric conical diffraction and generation of non-integer phase singularities in photonic graphene
Author :
Daohong Song ; Sheng Liu ; Paltoglou, Vassilis ; Gallardo, Daniel ; Liqin Tang ; Jingjun Xu ; Efremidis, Nikolaos K. ; Zhigang Chen
Author_Institution :
Sch. of Phys., Nankai Univ., Tianjin, China
Abstract :
We demonstrate asymmetric conical diffraction accompanied by pseudospin-mediated non-integer phase singularities when two sublattices of photonic graphene are equally excited near the Dirac points. Experimental and numerical results agree with analysis of the Dirac equation.
Keywords :
graphene; light diffraction; C; Dirac points; asymmetric conical diffraction; photonic graphene; pseudospin-mediated noninteger phase singularities; sublattices; Diffraction; Graphene; Lattices; Mathematical model; Optical vortices; Photonics; Physics;
Conference_Titel :
Lasers and Electro-Optics (CLEO), 2015 Conference on
Conference_Location :
San Jose, CA
