title: Tunable radiation source by coupling laser-plasma-generated electrons to a periodic structure.
abstract: Near-infrared radiation around 1000 nm generated from the interaction of a high-density MeV electron beam, obtained by impinging an intense ultrashort laser pulse on a solid target, with a metal grating is observed experimentally. Theoretical modeling and particle-in-cell simulation suggest that the radiation is caused by the Smith-Purcell mechanism. The results here indicate that tunable terahertz radiation with tens GV/m field strength can be achieved by using appropriate grating parameters.
authors.affiliation: Photon Pioneers Center, Osaka University, 2-1 Yamada-oka, Suita, Osaka, 565-0871 Japan.
authors.forename: Z
authors.initials: Z
authors.lastname: Jin
authors.forename: Z L
authors.initials: ZL
authors.lastname: Chen
authors.forename: H B
authors.initials: HB
authors.lastname: Zhuo
authors.forename: A
authors.initials: A
authors.lastname: Kon
authors.forename: M
authors.initials: M
authors.lastname: Nakatsutsumi
authors.forename: H B
authors.initials: HB
authors.lastname: Wang
authors.forename: B H
authors.initials: BH
authors.lastname: Zhang
authors.forename: Y Q
authors.initials: YQ
authors.lastname: Gu
authors.forename: Y C
authors.initials: YC
authors.lastname: Wu
authors.forename: B
authors.initials: B
authors.lastname: Zhu
authors.forename: L
authors.initials: L
authors.lastname: Wang
authors.forename: M Y
authors.initials: MY
authors.lastname: Yu
authors.forename: Z M
authors.initials: ZM
authors.lastname: Sheng
authors.forename: R
authors.initials: R
authors.lastname: Kodama