[1] Beihang Univ, Sch Instrumentat Sci & Optoelect Engn, Beijing 100191, Peoples R China
[2] Beihang Univ, Lab Int Associe, Beijing 100191, Peoples R China
[3] Univ Lyon, Inst Nanotechnol Lyon, UMR 5270, CNRS,Ecole Cent Lyon, 36 Ave Guy Collongue, F-69134 Ecully, France
[4] Univ Glasgow, Sch Phys & Astron, SUPA, Glasgow G12 8QQ, Lanark, Scotland