1. Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, China
2. Suzhou Advanced Research Institute, University of Science and Technology of China, Suzhou, Jiangsu 215123, China
3. Key Laboratory of Scientific Instrumentation of Anhui Higher Education Institutes, Department of Precision Machinery and Precision Instrumentation, University of Science and Technology of China, Hefei, Anhui 230027, China