1. National Key Laboratory of Photoelectric Technology and Functional Materials (Culture Base) in Shaanxi Province, National Photoelectric Technology and Functional Materials & Application of Science and Technology International Cooperation Base, Institute of Photonics & Photon-Technology, Northwest University, Xi’an 710069, China
2. Institute
of Modern Physics, Northwest University, Xi’an 710069, China
3. School of Sciences, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
4. ARC Centre of Excellence for Nanoscale
Biophotonics (CNBP), Macquarie University, North Ryde 2109, Australia