Open AccessGeneration of energetic femtosecond green pulses based on an OPCPA-SFG scheme
Author(s) -
Mark Mero,
Áron Sipos,
G. Kurdi,
K. Osvay
Publication year - 2011
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.19.009646
Subject(s) - optics , femtosecond , chirp , laser , materials science , sum frequency generation , pulse compression , chirped pulse amplification , achromatic lens , femtosecond pulse shaping , broadband , pulse duration , optical parametric amplifier , nonlinear optics , optoelectronics , physics , optical amplifier , telecommunications , radar , computer science
Femtosecond green pulses were generated from broadband pulses centered at 800 nm and quasi-monochromatic pulses centered at 532 nm using noncollinear optical parametric chirped pulse amplification (NOPCPA) followed by sum frequency mixing. In addition to amplifying the 800-nm pulses, the NOPCPA stage pumped by a Q-switched, injection seeded Nd:YAG laser also provided broadband idler pulses at 1590 nm. The signal and idler pulses were sum frequency mixed using achromatic and chirp assisted phase matching yielding pulses near 530 nm with a bandwidth of 12 nm and an energy in excess of 200 μJ. The generated pulses were recompressed with a grating compressor to a duration of 150 fs. The technique is scalable to high energies, broader bandwidths, and shorter pulse durations with compensation for higher order chirps and dedicated engineering of the interacting beams.