Anomalous transport of light at the phase transition to localization
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Photonics Research
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There has been a growing interest in disordered optical media in recent years due to their potential applications in
solar collectors, random lasers, light confinement, and other advanced photonic functions. This paper studies the
transport of light for different incidence angles in a strongly disordered optical medium composed of core-shell
TiO2@Silica nanoparticles suspended in an ethanol solution. A decrease of optical conductance and an increase of
absorption near the input border are reported when the incidence angle increases. The specular reflection, measured
for the photons that enter the sample, is lower than the effective internal reflection undergone by the coherently
backscattered photons in the exact opposite direction, indicating a nonreciprocal propagation of light.
This study represents a novel approach in order to understand the complex physics involved at the phase transition
to localization.
Como referenciar
JIMENEZ-VILLAR, ERNESTO; XAVIER, M.C.S.; WETTER, NIKLAUS U.; MESTRE, VALDECI; MARTINS, WELITON S.; BASSO, GABRIEL F.; ERMAKOV, V.A.; MARQUES, F.C.; SA, GILBERTO F. de. Anomalous transport of light at the phase transition to localization: strong dependence with incident angle. Photonics Research, v. 6, n. 10, p. 929-942, 2018. DOI: 10.1364/PRJ.6.000929. Disponível em: http://repositorio.ipen.br/handle/123456789/29314. Acesso em: 30 Dec 2025.
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