A new broadly tunable visible solid-state laser is reported. Wavelengths between 550 and 610 nm are generated by intracavity frequency doubling of tuned and free-running room-temperature pulsed LiF:F<sub>2</sub><sup>-</sup> lasers in potassium titanyl phosphate. Second-harmonic energy of 1.3 mJ has been achieved, corresponding to a fundamental-to-second-harmonic conversion efficiency of 20%. Operation is optimized with respect to LiF:F<sub>2</sub><sup>-</sup> laser parameters.
© 1998 Optical Society of America
(140.1700) Lasers and laser optics : Color center lasers
(140.3580) Lasers and laser optics : Lasers, solid-state
(140.3600) Lasers and laser optics : Lasers, tunable
(140.7300) Lasers and laser optics : Visible lasers
(190.2640) Nonlinear optics : Stimulated scattering, modulation, etc.
(190.7220) Nonlinear optics : Upconversion
Shirin M. Giffin, Iain T. McKinnie, and Valerii V. Ter-Mikirtychev, "Tunable visible solid-state lasers based on second-harmonic generation of LiF:F2 in potassium titanyl phosphate," Opt. Lett. 23, 192-194 (1998)