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. Department of Physics, American University of Sharjah, PO Box 26666, Sharjah, United Arab Emirates
3. Faculty of Physics, Voronezh State University, 1 University Square, Voronezh 394006, Russia
4. The Institute of Optics, University of Rochester, Rochester, New York 14627, USA