Influences of annealing temperature on properties of Fe2+:ZnSe thin films deposited by electron beam evaporation and their applications to Q-switched fiber laser
Qing Du-Xin1, Wang Shu-Tong1, Ning Shou-Gui1, Zhang Wei1, Chen Xiao-Xu1, Zhang Hong1, Feng Guo-Ying1, †, Zhou Shou-Huan1, 2
       

Surface SEM images of Fe2+:ZnSe films (a) as-deposited and annealed at (b) 100 °C, (c) 200 °C, (d) 300 °C, and (e) 400 °C.