刘峰 ^1, , 潘正伟 ^2, , 张家骅 ^3, , 王笑军 ^4,

1.College of Engineering, Department of Physics and Astronomy, University of Georgia, Athens, GA 30602,USA;
2.College of Engineering, Department of Physics and Astronomy, University of Georgia, Athens, GA 30602,USA;
3.中国科学院长春光学精密机械与物理研究所发光学及应用国家重点实验室,吉林长春,130033;
4.东北师范大学物理学院,吉林长春130024;Department of Physics, Georgia Southern University, Statesboro, GA 30460, USA