Cheng Jia, Wu Ya-Dong, Yan Ri, Peng Xue-Fang, Zhu Ren-Jiang, Wang Tao, Jiang Li-Dan, Tong Cun-Zhu, Song Yan-Rong, Zhang Peng. Tunable ultraviolet laser based on intracavity third harmonic generation of external cavity surface emitting laserJ. Acta Physica Sinica, 2024, 73(8): 084202. DOI: 10.7498/aps.73.20231923