It is reported that efficient continuous wave (CW) red laser generation at 670 nm in a LBO crystal at type I phase matching direction performed with a diode pumped Nd 3+ :YAlO 3 (Nd:YAP) laser. With inci dent pump power of 15.6 W, output power of 273 mW at 670 nm has been obtained using a 10 mm long LBO crystal. At the output power level of 273 mW, the output stability is better than 3.7%.

We report a blue laser at 473 nm generation by intracavity frequency doubling of a continuous wave (CW) laser operation of a 946 nm Nd:YAG laser under in band diode pumping at 869 nm. An BiBO crystal, cut for critical type I phase matching at room temperature is used for second harmonic generation of the laser. At an incident pump power of 8.6 W, as high as 721 mW of CW output power at 473 nm is achieved. The optical to optical conversion efficiency is up to 8.4%, and the fluctuation of the blue output power was better than 3.5% in the given 30 min.

We report for the first time a continuous wave (CW) blue radiation at 494 nm by intracavity sum frequency generation of 912 nm Nd:GdVO 4 laser and 1079 nm Nd:YAlO 3 (Nd:YAP) laser. Using type I crit ical phase matching LiB 3 O 5 (LBO) crystal, 494 nm blue laser was obtained by 912 and 1079 nm intra cavity sum frequency mixing, and output power of 179 mW was demonstrated. At the output power level of 179 mW, the output power stability is better than 3.5% and laser beam quality M 2 factor is 1.21.

We report a green laser at 531 nm generation by intracavity frequency doubling of a continuous wave (cw) laser operation of a 1062 nm Nd:GAGG laser under in band diode pumping at 808 nm. A LiB 3 O 5 (LBO) crystal, cut for critical type I phase matching at room temperature is used for second harmonic gen eration of the laser. At an incident pump power of 18.5 W, as high as 933 mW of cw output power at 531 nm is achieved. The fluctuation of the green output power was better than 3.5% in the given 4 h.