Diode-pumped Pr3+:LiYF4 visible dual-wavelength laser

A diode-pumped simultaneous continuous-wave (cw) dual-wavelength Pr3+:LiYF4 laser in the green spectral region is experimentally demonstrated. We calculate the condition of gain-to-loss balance via an uncoated glass plane to achieve the simultaneous dual-wavelength operation. The simultaneous dual-wavelength Pr3+:LiYF4 laser at 546 nm in π-polarization and 550 nm in σ-polarization is experimentally realized. At an absorbed pump power of 1.5 W, the maximum output power obtained at 546 nm and 550 nm is 184 mW and 158 mW, respectively.