title: Multiphoton route to ZnO nanowire lasers.
abstract: With intense femtosecond laser excitation, multiphoton absorption-induced stimulated emission and laser emission in ZnO bulk crystal and nanowires have been demonstrated at room temperature. UV-stimulated emission peaks appeared in both bulk crystal and nanowires when the excitation exceeded certain thresholds, and a sharp lasing peak with a linewidth of ~0.5 nm was observed from ZnO nanowires. The emission properties were attributed to the band-edge emission of the recombination of carriers excited by two- and three-photon absorption processes in the wide-bandgap semiconductor.
authors.affiliation: State Key Laboratory for Applied Surface Physics and Department of Physics, Fudan University, Shanghai, China.
authors.forename: C F
authors.initials: CF
authors.lastname: Zhang
authors.forename: Z W
authors.initials: ZW
authors.lastname: Dong
authors.forename: G J
authors.initials: GJ
authors.lastname: You
authors.forename: S X
authors.initials: SX
authors.lastname: Qian
authors.forename: H
authors.initials: H
authors.lastname: Deng