Physics Department, Sichuan University, Chengdu 610064, China;
Physics Department, Sichuan University, Chengdu 610064, China;
Physics Department, Sichuan University, Chengdu 610064, China;
Physics Department, Sichuan University, Chengdu 610064, China;
Physics Department, Sichuan University, Chengdu 610064, China;
Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China;
Institute of Optics and Electronics, Chinese Academy of Sciences, Chengdu, 610209, China;
surface plasmon polaritons (SPPs); enhancement; interference lithography; resolution;