Institute of Photonics & Photon-Technology;
Northwest University;
Xi' an 710069;
China;
Department of Physics;
Northwest University;
Xi'an 710069;
China;
Chemical Engineering College;
Northwest University;
Xi'an 710069;
China;
State Key Laboratory of Transient Optics and Technology;
Xi'an Institute of Optics & Precision Mechanics;
Academy of Sciences of China;
Xi'an 710068;
China;