School of Physics Henan Normal University Xinxiang 453007 China;
Henan Key Laboratory of Infrared Materials & Spectrum Measures and Applications Xinxiang 453007 China;
School of Physics Henan Normal University Xinxiang 453007 China;
Yunnan Observatories Chinese Academy of Sciences Kunming 650216 China;
Kunming Institute of Physics Kunming 650216 China;
Yunnan Observatories Chinese Academy of Sciences Kunming 650216 China;