Localization vs. subradiance in three-dimensional scattering of light

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...

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Bibliographic Details
Published in:Europhysics letters 2019-09, Vol.127 (5), p.54003
Main Authors: Moreira, N. A., Kaiser, R., Bachelard, R.
Format: Article
Language:English
Subjects:
42.25.Dd
72.15.Rn
Anderson localization
Density
Physics
Quantum Physics
Scattering
Size effects
Specific energy
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Summary: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.
ISSN:0295-5075
1286-4854
1286-4854
DOI:10.1209/0295-5075/127/54003