Ao Sun, Huabing Du, Lifei Hou, Wanli Shang, Xingsen Che, Wenhai Zhang, Minxi Wei, Guohong Yang, Rongqing Yi, Yimeng Yang, Shaoen Jiang, Feng Wang, Jiamin Yang. Filter-based technology for evaluating proportions of high-order harmonics and its application[J]. Infrared and Laser Engineering, 2020, 49(8): 20200072