SECOND HARMONIC GENERATION IN LiNbO3 BY PICOSECOND PULSES

Short pulses emitted by a Nd:glass laser were passed through LiNbO3 crystals to produce SHG (second harmonic generation) of tunable duration. The duration of the SHG pulse was tuned between 1.5 psec and 9 psec by varying the length of the LiNbO3 crystals.