Probing Anderson localization of light by weak non-linear effects

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2014
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New Journal of Physics. 2014, 16(11), 112001. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/16/11/112001
Zusammenfassung

Breakdown of wave transport due to strong disorder is a universal phenomenon known as Anderson localization (AL). It occurs because of the macroscopic population of reciprocal multiple scattering paths, which in three dimensional systems happens at a critical scattering strength. Intensities on these random loops should thus be highly increased relative to those of a diffusive sample. In order to highlight localized modes of light, we exploit the optical nonlinearities of TiO2. Power dependent and spectrally resolved time of flight distribution measurements in transmission through slabs of TiO2 powders at various turbidities reveal that mostly long loops are affected by nonlinearities and that the deviations from diffusive transport observed at long times are due to these localized modes. Our data are a first step in the experimental investigation of the interplay between nonlinear effects and AL in 3D.

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530 Physik
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Anderson localization, nonlinear optics, multiple light scattering
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ISO 690SPERLING, Tilo, Wolfgang BÜHRER, Mirco ACKERMANN, Christof M. AEGERTER, Georg MARET, 2014. Probing Anderson localization of light by weak non-linear effects. In: New Journal of Physics. 2014, 16(11), 112001. eISSN 1367-2630. Available under: doi: 10.1088/1367-2630/16/11/112001
BibTex
@article{Sperling2014Probi-29246,
  year={2014},
  doi={10.1088/1367-2630/16/11/112001},
  title={Probing Anderson localization of light by weak non-linear effects},
  number={11},
  volume={16},
  journal={New Journal of Physics},
  author={Sperling, Tilo and Bührer, Wolfgang and Ackermann, Mirco and Aegerter, Christof M. and Maret, Georg},
  note={Article Number: 112001}
}
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