575-fs passively mode-locked Yb:CaF<sub>2</sub> ceramic laser

575-fs passively mode-locked Yb:CaF₂ ceramic laser

Wang Cong^{1, 2}, Hao Qian-Qian^{1, 2}, Li Wei-Wei^{3, ‡}, Huang Hai-Jun⁴, Wang Shao-Zhao³, Jiang Da-Peng^{5, 6}, Liu Jie^{1, 2, §}, Mei Bing-Chu⁴, Su Liang-Bi^{5, 6}

The (a) photograph and (b) in-line transmittance of 5-at.% Yb:CaF₂ transparent cermics (16 mm in diameter, 3.5 mm in thickness).