Optical Parametric Generation of Greater Than 30 mJ Signal Energies in PPLN Stacks

摘要

We report generation of high energy mid-IR pulses by pumping stacks of PPLN crystals with multiple elliptical beams in a single-pass optical parametric generator. Signal energies as high as 33 mJ in 3.5-nsec pulses were achieved with bare (uncoated) PPLN crystals while maintaining excellent beam quality.