Volume 127, Number 5, September 2019
|Number of page(s)||7|
|Section||Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics|
|Published online||21 October 2019|
Localization vs. subradiance in three-dimensional scattering of light
1 Instituto de Física de São Carlos, Universidade de São Paulo - 13560-970 São Carlos, SP, Brazil
2 Université Côte d'Azur, CNRS, INPHYNI - Valbonne, France
3 Departamento de Física, Universidade Federal de São Carlos - Rod. Washington Luís, km 235 - SP-310, 13565-905 São Carlos, SP, Brazil
Received: 16 May 2019
Accepted: 28 August 2019
We study the scattering modes of light in a three-dimensional disordered medium, in the scalar approximation and above the critical density for Anderson localization. Localized modes represent a minority of the total number of modes, even well above the threshold density, whereas spatially extended subradiant modes predominate. For specific energy ranges however, almost all modes are localized, yet adjusting accordingly the probe frequency does not allow to address these only in the regime accessible numerically. Finally, their lifetime is observed to be dominated by finite-size effects, and more specifically by the ratio of the localization length to their distance to the system boundaries.
PACS: 42.25.Dd – Wave propagation in random media / 72.15.Rn – Localization effects (Anderson or weak localization)
© EPLA, 2019
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