1. The Guo China-US Photonics Laboratory, State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, China
2. Faculty of Physics, Voronezh State University, 1 University Square, Voronezh 394018, Russia
3. The Institute of Optics, University of Rochester, Rochester, New York 14627, USA