作者机构:[1]National Laboratory for Infrared Physics, Shanghai Institute of Technical Physics, Chinese Academy of Sciences, Shanghai 200083, P R. China
相关基金:Supported by Shanghai City Committee of Science and Technology(Nos.06XD14020, 07JC14058) and the Outstanding Young Scholar' Program by NSFC(No.60225004) and Shanghai Pujiang Talent Plan(07PJ14095).