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Nano Lett. 2007 Dec;7(12):3675-80. Epub 2007 Nov 17.

High-order waveguide modes in ZnO nanowires.

Author information

1
Department of Physics and School of Engineering and Applied Sciences, Harvard University, Cambridge, MA 02138, USA.

Abstract

We use tapered silica fibers to inject laser light into ZnO nanowires with diameters around 250 nm to study their waveguiding properties. We find that high-order waveguide modes are frequently excited and carry significant intensity at the wire surface. Numerical simulations reproduce the experimental observations and indicate a coupling efficiency between silica and ZnO nanowires of 50%. Experimentally, we find an emission angle from the ZnO nanowires of about 90 degrees , which is in agreement with the simulations.

PMID:
18020387
DOI:
10.1021/nl071958w
[Indexed for MEDLINE]

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