Title :
Investigation of efficient self-frequency-doubling Nd:YAB lasers
Author :
Bartschke, J. ; Knappe, R. ; Boller, K.-J. ; Wallenstein, R.
Author_Institution :
Fachbereich Phys., Kaiserslautern Univ., Germany
Abstract :
We report on the investigation of efficient self-frequency doubling Nd:YAl/sub 3/(BO/sub 3/)/sub 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. In this case, 2.2 W of 807-nm Ti:sapphire radiation produced a 531-nm output of 450 mW. The experimental performance of these Nd:YAB lasers is in good agreement with the predictions of a numerical analysis based on rate equations adequate for lasers with self-frequency doubling.
Keywords :
aluminium compounds; laser beams; laser variables measurement; neodymium; optical harmonic generation; optical pumping; solid lasers; yttrium compounds; 1.6 W; 14 percent; 2.2 W; 20 percent; 225 mW; 450 mW; 531 nm; 807 nm; Al/sub 2/O/sub 3/:Ti; Nd:YAB lasers; Nd:YAl/sub 3/(BO/sub 3/)/sub 4/ lasers; Ti:sapphire laser; YAl/sub 3/(BO/sub 3/)/sub 4/:Nd; conversion efficiencies; diffraction-limited beam; diode laser radiation; green output; pump conversion; pump source; rate equations; self-frequency doubling; self-frequency-doubling; visible output power; Frequency; Laser excitation; Laser modes; Laser theory; Optical resonators; Power generation; Power lasers; Pump lasers; Semiconductor laser arrays; Solid lasers;
Journal_Title :
Quantum Electronics, IEEE Journal of
