Publications
ResearcherID : C-5956-2008 (TY, h-index: 25) , AAZ-8749-2021 (RK, h-index: 11)
Google Scholar : TY (h-index: 34), RK (h-index: 12)
2016
Silies, Martin, Mascheck, Manfred, Leipold, David, Kollmann, Heiko, Schmidt, Slawa, Sartor, Janos, Yatsui, Takashi, Kitamura, Kokoro, Ohtsu, Motoichi, Kalt, Heinz, Runge, Erich, Lienau, Christoph
In: Applied Physics B, vol. 8, no. 7, pp. 181, 2016.
Abstract | Links | BibTeX | タグ: localization
@article{2017SilesAPB,
title = {Near-field assisted localization: Effect of size and filling factor of randomly distributed zinc oxide nanoneedles on multiple scattering and localization of light},
author = {Martin Silies and Manfred Mascheck and David Leipold and Heiko Kollmann and Slawa Schmidt and Janos Sartor and Takashi Yatsui and Kokoro Kitamura and Motoichi Ohtsu and Heinz Kalt and Erich Runge and Christoph Lienau},
doi = {10.1007/s00340-016-6456-2},
year = {2016},
date = {2016-07-01},
journal = {Applied Physics B},
volume = {8},
number = {7},
pages = {181},
publisher = {Springer Nature},
abstract = {We investigate the influence of the diameter and the filling factor of randomly arranged ZnO nanoneedles on the multiple scattering and localization of light in disordered dielectrics. Coherent, ultra-broadband second-harmonic (SH) microscopy is used to probe the spatial localization of light in representative nm-sized ZnO arrays of needles. We observe strong fluctuations of the SH intensity inside different ZnO needle geometries. Comparison of the SH intensity distributions with predictions based on a one-parameter scaling model indicate that SH fluctuations can be taken as a quantitative measure for the degree of localization. Interestingly, the strongest localization signatures are found for densely packed arrays of thin needles with diameters in the range of only 30 nm range, despite the small scattering cross section of these needles. FDTD simulations indicate that in this case coupling of electric near-fields between neighbouring needles governs the localization.},
keywords = {localization},
pubstate = {published},
tppubtype = {article}
}
We investigate the influence of the diameter and the filling factor of randomly arranged ZnO nanoneedles on the multiple scattering and localization of light in disordered dielectrics. Coherent, ultra-broadband second-harmonic (SH) microscopy is used to probe the spatial localization of light in representative nm-sized ZnO arrays of needles. We observe strong fluctuations of the SH intensity inside different ZnO needle geometries. Comparison of the SH intensity distributions with predictions based on a one-parameter scaling model indicate that SH fluctuations can be taken as a quantitative measure for the degree of localization. Interestingly, the strongest localization signatures are found for densely packed arrays of thin needles with diameters in the range of only 30 nm range, despite the small scattering cross section of these needles. FDTD simulations indicate that in this case coupling of electric near-fields between neighbouring needles governs the localization.