Dendritic nanowire ultraviolet laser array.
Self-organized dendritic crystal growth is explored to assemble uniform semiconductor nanowires into highly ordered one-dimensional microscale arrays that resemble comb structures. The individual ZnO nanowires have uniform diameters ranging from 10 to 300 nm. They are evenly spaced on a stem with a regular periodicity of 0.1-2 micrometer. Under optical excitation, each individual ZnO nanowire serves as a Fabry-Perot optical cavity, and together they form a highly ordered nanowire ultraviolet laser array.
Yan
Haoquan
H
Department of Chemistry, Materials Science Div., Lawrence Berkeley National Lab, University of California, Berkeley, California 94720, USA.
He
Rongrui
R
Johnson
Justin
J
Law
Matthew
M
Saykally
Richard J
RJ
Yang
Peidong
P