title: Imaging single ZnO vertical nanowire laser cavities using UV-laser scanning confocal microscopy.
abstract: We report the fabrication and optical characterization of individual ZnO vertical nanowire laser cavities. Dilute nanowire arrays with interwire spacing >10 microm were produced by a modified chemical vapor transport (CVT) method yielding an ideal platform for single nanowire imaging and spectroscopy. Lasing characteristics of a single vertical nanowire are presented, as well as high-resolution photoluminescence imaging by UV-laser scanning confocal microscopy. In addition, three-dimensional (3D) mapping of the photoluminescence emission performed in both planar and vertical dimensions demonstrates height-selective imaging useful for vertical nanowires and heteronanostructures emerging in the field of optoelectronics and nanophotonics.
authors.affiliation: Department of Chemistry, University of California, Berkeley, California 94720, USA.
authors.forename: Daniel J
authors.initials: DJ
authors.lastname: Gargas
authors.forename: Maria Eugenia
authors.initials: ME
authors.lastname: Toimil-Molares
authors.forename: Peidong
authors.initials: P
authors.lastname: Yang