Broadband γ-graphyne saturable absorber for Q-switched solid-state laser

摘要： γ‐graphyne, as a member of two‐dimensional carbon materials, has attracted much attentions benefitting from its unique characteristics, such as high carriers mobility, high stability, etc. In the present study, a γ‐graphyne saturable absorber (SA) was fabricated and characterized. The linear optical absorption in the spectral range from the visible to mid‐infrared as well as the nonlinear optical character of the SA were investigated. The passively Q‐switched solid‐ state lasers emitting at 639 nm, 1342 nm, 1932 nm were realized by using the γ‐graphyne SA. The results indicate that the γ‐graphyne could be a promising alternative for rare broadband optical modulator.