[Li, Gao-Xiang; Zhu, Shi-Yao; Wang, Li-Gang] Chinese Univ Hong Kong, Ctr Opt Sci, Shatin, Hong Kong, Peoples R China.
[Li, Gao-Xiang; Zhu, Shi-Yao; Wang, Li-Gang] Chinese Univ Hong Kong, Dept Phys, Shatin, Hong Kong, Peoples R China.
[Zhu, Shi-Yao; Wang, Li-Gang] Zhejiang Univ, Dept Phys, Hangzhou 310027, Zhejiang, Peoples R China.
[Li, Gao-Xiang] Huazhong Normal Univ, Dept Phys, Wuhan 430079, Peoples R China.
[Zhu, Shi-Yao] Hong Kong Baptist Univ, Dept Phys, Kowloon Tong, Hong Kong, Peoples R China.