Affiliation: | 1. State Key Laboratory of Transient Optics and Photonics , Xi'an Institute of Optics and Precision Mechanics , Chinese Academic of Sciences, Xi'an, China kqlu@opt.cn;3. State Key Laboratory of Transient Optics and Photonics , Xi'an Institute of Optics and Precision Mechanics , Chinese Academic of Sciences, Xi'an, China;4. Shangluo University, Shaanxi Shangluo , China |