[1] King Mongkuts Univ Technol Thonburi, Dept Phys, Bangkok 10140, Thailand
[2] Chinese Acad Sci, Shanghai Inst Opt & Fine Mech, Shanghai 201800, Peoples R China
[3] Shanghai Univ, Dept Phys, Shanghai 201800, Peoples R China
[4] AS CR, Inst Phys, Prague 16253, Czech Republic