Computer controlled intracavity SHG in a cw ring dye laser

A tunable computer controlled UV laser spectrometer utilizing intracavity second harmonic generation of a cw ring dye laser is described. The spectrometer yields broadband (~100-GHz) second harmonic outputs of up to 30 mW and narrowband (~100-MHz) single-mode UV outputs of up to 10 mW continuously tunable over intervals of 3200 GHz in the 285-311-nm wavelength range.