title: Periodic metallo-dielectric structure in diamond.
abstract: Intense ultrashort light pulses induce three dimensional localized phase transformation of diamond. Photoinduced amorphous structures have electrical conducting properties of a maximum of 64 S/m based on a localized transition from sp(3) to sp(2) in diamond. The laser parameters of fluence and scanning speed affect the resultant electrical conductivities due to recrystallization and multi-filamentation phenomena. We demonstrate that the laser-processed diamond with the periodic cylinder arrays have the characteristic transmission properties in terahertz region, which are good agreement with theoretical calculations. The fabricated periodic structures act as metallo-dielectric photonic crystal.
authors.affiliation: Department of Material Chemistry, Kyoto University, Katsura, Kyoto, Japan.
authors.forename: M
authors.initials: M
authors.lastname: Shimizu
authors.forename: Y
authors.initials: Y
authors.lastname: Shimotsuma
authors.forename: M
authors.initials: M
authors.lastname: Sakakura
authors.forename: T
authors.initials: T
authors.lastname: Yuasa
authors.forename: H
authors.initials: H
authors.lastname: Homma
authors.forename: Y
authors.initials: Y
authors.lastname: Minowa
authors.forename: K
authors.initials: K
authors.lastname: Tanaka
authors.forename: K
authors.initials: K
authors.lastname: Miura
authors.forename: K
authors.initials: K
authors.lastname: Hirao
mesh_terms: D003460:Crystallization; D003461:Crystallography; D018130:Diamond; D004553:Electric Conductivity; D007700:Kinetics; D007834:Lasers; D008027:Light; D008962:Models, Theoretical; D037742:Nanotubes, Carbon; D016011:Normal Distribution; D055095:Optics and Photonics; D012542:Scattering, Radiation; D013499:Surface Properties; D014965:X-Rays
chemical_list: D037742:Nanotubes, Carbon; D018130:Diamond