A 12.1-W SESAM mode-locked Yb:YAG thin disk laser
Peng Yingnan1, Wang Zhaohua2, Li Dehua2, Zhu Jiangfeng1, Wei Zhiyi1, 2, †, 
(a) Schematic of the Yb:YAG thin disk oscillator. M1, M2, and M3 are the concave mirrors with radii of curvature of 150 mm, 200 mm, and 500 mm, respectively; GTI1 and GTI2 are Gires–Tournois interferometer mirrors; OC is an output coupler with 2.5% transmission; FS is a 2-mm-thick fused silica plate positioned at the Brewster angle; and SESAM represents the semiconductor saturable absorber mirror. (b) Mode radius on the thin disk vs. the dioptric power of the thin disk.
