Affiliation: | [1]College of Precision Instrument and Opto-Electronics Engineering, Institute of Laser and Opto-Electronics Tianjin University, Tianjin 300072, China [2]Key Laboratory of Opto-electronics Information Technology of Ministry Education, Tianjin University, Tianjin 300072, China [3]School of Physics, Nankai University, Tianjin 300071, China |