[1] Nanchang Univ, Coll Informat Engn, Nanchang 330031, Peoples R China
[2] Beijing Normal Univ, Minist Educ, Key Lab Beam Technol & Mat Modificat, Beijing 100875, Peoples R China
[3] Nanchang Univ, Dept Phys, Nanchang 330047, Peoples R China
[4] Inst Appl Phys & Computat Math, Beijing 100088, Peoples R China