%0 Journal Article %J Nanoletters %D 2007 %T High Order Waveguide Modes in ZnO Nanowires %A T. Voss %A G. Thomas Svacha %A Mazur, E. %A S. Mueller %A C. Ronning %A D. Konjhodzic %A F. Marlow %X 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, which is in agreement with the simulations. %B Nanoletters %V 7 %P 3675–3680 %G eng %U /files/mazur/files/rep_601.pdf %R 10.1021/nl071958w