title: Room-temperature ultraviolet nanowire nanolasers.
abstract: Room-temperature ultraviolet lasing in semiconductor nanowire arrays has been demonstrated. The self-organized, <0001> oriented zinc oxide nanowires grown on sapphire substrates were synthesized with a simple vapor transport and condensation process. These wide band-gap semiconductor nanowires form natural laser cavities with diameters varying from 20 to 150 nanometers and lengths up to 10 micrometers. Under optical excitation, surface-emitting lasing action was observed at 385 nanometers, with an emission linewidth less than 0.3 nanometer. The chemical flexibility and the one-dimensionality of the nanowires make them ideal miniaturized laser light sources. These short-wavelength nanolasers could have myriad applications, including optical computing, information storage, and microanalysis.
authors.affiliation: Department of Chemistry, University of California, Environmental Energy Technology Division, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
authors.forename: M H
authors.initials: MH
authors.lastname: Huang
authors.forename: S
authors.initials: S
authors.lastname: Mao
authors.forename: H
authors.initials: H
authors.lastname: Feick
authors.forename: H
authors.initials: H
authors.lastname: Yan
authors.forename: Y
authors.initials: Y
authors.lastname: Wu
authors.forename: H
authors.initials: H
authors.lastname: Kind
authors.forename: E
authors.initials: E
authors.lastname: Weber
authors.forename: R
authors.initials: R
authors.lastname: Russo
authors.forename: P
authors.initials: P
authors.lastname: Yang