1 March 2011 Anderson localization of light in a random configuration of semiconductor nanocolumns
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In the two-dimensional random system composed of a disordered array of a dielectric cylindrical column ensemble, Anderson localization of light is possible. We show localization parameter maps for the light localization adopting parameters of gallium nitride nanocolumn samples, which consist of random arrays of parallel nanosized columnar semiconductor crystals. The maps indicate parametric dependence of the localization characteristics on the light frequency, the radius of the columns, and the filling fraction of the columns. To obtain the maps, we have simulated temporal light diffusion in random media using the two-dimensional finite-difference time-domain method and analyzed the simulation results by Fourier transformation. We conclude that the main mechanism for localization varies continuously with the column filling fraction from Mie resonance of single column to Bragg-like diffraction of the column ensemble.
© (2011) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Y. Inose, Y. Inose, M. Sakai, M. Sakai, K. Ema, K. Ema, A. Kikuchi, A. Kikuchi, K. Kishino, K. Kishino, T. Ohtsuki, T. Ohtsuki, } "Anderson localization of light in a random configuration of semiconductor nanocolumns", Proc. SPIE 7946, Photonic and Phononic Properties of Engineered Nanostructures, 794629 (1 March 2011); doi: 10.1117/12.876128; https://doi.org/10.1117/12.876128


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