title: High-power picosecond terahertz-wave generation in photonic crystal fiber via four-wave mixing.
abstract: We demonstrate picosecond terahertz (THz)-wave generation via four-wave mixing in an octagonal photonic crystal fiber (O-PCF). Perfect phase-matching is obtained at the pump wavelength of 1.55 μm and a generation scheme is proposed. Using this method, THz waves can be generated in the frequency range of 7.07-7.74 THz. Moreover, peak power of 2.55 W, average power of 1.53 mW, and peak conversion efficiency of more than -66.65 dB at 7.42 THz in a 6.25 cm long fiber are realized with a pump peak power of 2 kW.
authors.affiliation: State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Science (CAS), Xi'an, China.
authors.forename: Huihui
authors.initials: H
authors.lastname: Wu
authors.forename: Hongjun
authors.initials: H
authors.lastname: Liu
authors.forename: Nan
authors.initials: N
authors.lastname: Huang
authors.forename: Qibing
authors.initials: Q
authors.lastname: Sun
authors.forename: Jin
authors.initials: J
authors.lastname: Wen