机译:
School of Physics and Optoelectronic Engineering Xiangtan University Xiangtan 411105 China;
School of Physics and Optoelectronic Engineering Xiangtan University Xiangtan 411105 China;
School of Automation and Electronic Information Xiangtan University Xiangtan 411105 China;
School of Automation and Electronic Information Xiangtan University Xiangtan 411105 China;