Xin Zeng, Shuzhen Cui, Huawei Jiang, Bowen Ruan, Xin Cheng, Jiaqi Zhou, Zhiquan Lin, Xuezong Yang, Weibiao Chen, Yan Feng. Single-frequency upconverted laser generation by phase summation[J]. High Power Laser Science and Engineering, 2023, 11(2): 02000e18