1.12-W Q-switched Yb:KGW laser based on transmission-type Bi2Se3 saturable absorber*
Liu Jing-Huia), Tian Jin-Ronga)†, Hu Meng-Tinga), Xu Run-Qina), Dou Zhi-Yuana), Yu Zhen-Huab), Song Yan-Ronga)‡
       
(a) Schematic diagram of Z -scan system; (b) nonlinear transmission of TISA versus fluence.