Acousto-optical coherence tomography using random phase jumps on ultrasound and light.
Opt Express
; 17(20): 18211-8, 2009 Sep 28.
Article
em En
| MEDLINE
| ID: mdl-19907612
ABSTRACT
Imaging objects embedded within highly scattering media by coupling light and ultrasounds (US) is a challenging approach. In deed, US enable direct access to the spatial localization, though resolution can be poor along their axis (cm). Up to now, several configurations have been studied, giving a millimetric axial resolution by applying to the US a microsecond pulse regime, as is the case with conventional echography. We introduce a new approach called Acousto-Optical Coherence Tomography (AOCT), enabling us to get a millimetric resolution with continuous US and light beams by applying random phase jumps on US and light. An experimental demonstration is performed with a self-adaptive holographic setup containing a photorefractive GaAs bulk crystal and a single large area photodetector.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Acústica
/
Aumento da Imagem
/
Ultrassonografia
/
Tomografia de Coerência Óptica
Tipo de estudo:
Clinical_trials
/
Diagnostic_studies
Idioma:
En
Revista:
Opt Express
Assunto da revista:
OFTALMOLOGIA
Ano de publicação:
2009
Tipo de documento:
Article