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An All-Solid-State Tunable Dual-Wavelength Ti:Sapphire Laser with Quasi-Continuous-Wave Outputs

A high power dual-wavelength Ti:sapphire laser system with wide turning range and high efficiency is described, which consists of two prism-dispersed resonators pumped by an all-solid-state frequency-doubled Nd:YAG laser. Tunable dual-wavelength outputs, with one wavelength range from 750 nm to 795 nm and the other from 800 nm to 850 nm, have been demonstrated. With a pump power of 23 W at 532 nm, a repetition rate of 6.5 kHz and a pulse width of 67.6 ns, the maximum dual-wavelength output power of 5.6 W at 785.3 nm and 812.1 nm, with a pulse width of 17.2 ns and a line width of 2 nm, has been achieved, leading to an optical-to-optical conversion efficiency of 24.4%.