Room-temperature ultraviolet nanowire nanolasers.
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.
Huang
M H
MH
Department of Chemistry, University of California, Environmental Energy Technology Division, Materials Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.
Mao
S
S
Feick
H
H
Yan
H
H
Wu
Y
Y
Kind
H
H
Weber
E
E
Russo
R
R
Yang
P
P