Analysis of gain distribution in cladding-pumped thulium-doped fiber laser and optical feedback inhibition problem in fiber-bulk laser system
Ji En-Cai†, Liu Qiang, Hu Zhen-Yue, Gong Ma-Li
       
Distribution of gain coefficient g ( λ , z ) in cladding-pumped TDFL when P in = 34 W and L = 1.9 m.