title: Generation of multi-octave-spanning laser harmonics by cascaded quasi-phase matching in a monolithic ferroelectric crystal.
abstract: 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.
authors.affiliation: Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan.
authors.forename: Wei-Chun
authors.initials: WC
authors.lastname: Hsu
authors.forename: Ying-Yao
authors.initials: YY
authors.lastname: Lai
authors.forename: Chien-Jen
authors.initials: CJ
authors.lastname: Lai
authors.forename: Lung-Han
authors.initials: LH
authors.lastname: Peng
authors.forename: Ci-Ling
authors.initials: CL
authors.lastname: Pan
authors.forename: A H
authors.initials: AH
authors.lastname: Kung