1. State Key Lab of Integrated OptoelectronicsCollege of Electronic Science and EngineeringJilin University 2699 Qianjin Street Changchun 130012 China
2. College of PhysicsJilin University 2699 Qianjin Street Changchun 130012 China
3. State Key Lab of Precision Measurement Technology and InstrumentsDepartment of Precision InstrumentTsinghua University Haidian Beijing 100084 China