INVESTIGATION OF EFFICIENT SELF-FREQUENCY-DOUBLING ND-YAB LASERS

We report on the investigation of efficient self-frequency doubling Nd :YAI(3)(BO3)(4) (Nd:YAB) lasers, Pumped by 1.6 W of 807 nm diode laser radiation, the Nd:YAB laser generates a green 531-nm output of 225 mW which corresponds to a conversion of pump to visible output power of 14%. Conversion efficiencies as high as 20% could be achieved by using the diffraction-limited beam of a Ti:sapphire laser as pump source, I n this case, 2.2 W of 807-nm Ti:sapphire radiation produced a 531-nm o utput of 450 mW, The experimental performance of these Nd:YAB lasers i s in good agreement with the predictions of a numerical analysis based on rate equations adequate for lasers with self-frequency doubling.