Affiliation: | ZHANG Wen1,LIU YiMin2,YIN XiaoFeng3 & ZHANG ZhanJun3 1 Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of China,School of Physics & Material Science,Anhui University,Hefei 230039,China,2 Department of Physics,Shaoguan University,Shaoguan 512005,3 School of Physics & Material Science |