Origin of low-coherence enhanced backscattering.
Opt Lett
; 31(10): 1459-61, 2006 May 15.
Article
em En
| MEDLINE
| ID: mdl-16642138
ABSTRACT
The origin of low-coherence enhanced backscattering (EBS) of light in random media when the spatial coherence length of illumination is much smaller than the transport mean free path has been poorly understood. We report that in weakly scattering discrete random media low-coherence EBS originates from time-reversed paths of double scattering. Low spatial coherence illumination dephases the time-reversed waves outside its finite coherence area, which isolates the minimal number of scattering events in EBS from higher-order scattering. Moreover, we show the first experimental evidence that the minimal number of scattering events in EBS is double scattering, which has been hypothesized since the first observation of EBS.
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Base de dados:
MEDLINE
Assunto principal:
Algoritmos
/
Interpretação de Imagem Assistida por Computador
/
Aumento da Imagem
/
Artefatos
/
Imageamento Tridimensional
/
Tomografia de Coerência Óptica
Idioma:
En
Ano de publicação:
2006
Tipo de documento:
Article
País de afiliação:
Estados Unidos