Generation of multi-octave-spanning laser harmonics by cascaded quasi-phase matching in a monolithic ferroelectric crystal.
We report the generation of the second to the sixth harmonics of a fundamental frequency covering two and a half octaves in a multiply-periodically poled lithium tantalate crystal by cascaded quasi-phase-matched frequency mixing. A frequency comb that is composed of these harmonics will permit the synthesis of a train of periodic subcycle subfemtosecond pulses in a compact setting.
Hsu
Wei-Chun
WC
Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan.
Lai
Ying-Yao
YY
Lai
Chien-Jen
CJ
Peng
Lung-Han
LH
Pan
Ci-Ling
CL
Kung
A H
AH