Generation of blue laser by extracavity frequency-doubling of a tunable Ti:sapphire laser

In this letter, a blue laser based on frequency doubling of tunable Ti:Sapphire laser pumped by a frequency doubled Q switched Nd:YAG laser at a repetition rate of 10 Hz is demonstrated. A β BaB 2 O 4 (BBO) crystal was used for frequency doubling of the Ti:sapphire laser to obtain high efficiency second harmonic generation (SHG). By using two dense flint glass prisms as dispersion element, a Ti:sapphire laser and blue laser with tuning range from 740 nm to 860 nm and 370 nm 430 nm were obtained, respectiv ely. At incident pump energy of 50 mJ, the maximum output energy was 7.2 mJ and 2.9 mJ at 800 nm and 400 nm, respectively.