Affiliation: | Photonics Center, College of Physics Science, Nankai University, Weijin Road 94, Tianjin 300071, China The Key Laboratory of Advanced Technique and Fabrication for Weak-Light Nonlinear Photonics Materials, Ministry of Education, Nankai University, Tianjin 300457, China Tianjin Key Laboratory of Photonics Materials and Technology for Information Science, Nankai University, Tianjin 300457, China |