Efficient harmonic generation from 532 to 266 nm in ADP and KD*P

Abstract

Second harmonic generation of mode-locked pulses in ADP and KD*P from 532 to 266 nm with 85% conversion is reported. Two-photon absorption coefficients are measured for the two materials and found to be relatively unimportant in the limitation of harmonic conversion compared to the effects of phase mismatch and dispersion.