Frequency-doubling of a CW fiber laser using PPKTP, PPMgSLT, and PPMgLN

摘要: Second-harmonic generation (SHG) in PPKTP, PPMgSLT, and PPMgLN crystals is analyzed by frequency-doubling CW light from a 1064 nm fiber laser over range of powers up to 10 W. Data for fundamental less than 3 W used determine the effects linewidth on SHG identify imperfections periodicity boundary sharpness crystals’ poled domains which can reduce SHG. greater diagnose model limiting such as pump depletion thermal dephasing. Thermal dephasing was found second-harmonic power 25% or more input approaching