Ultrasound-modulated optical tomography in scattering media: flux filtering based on persistent spectral hole burning in the optical diagnosis window

Caroline Venet, Maïmouna Bocoum, Jean-Baptiste Laudereau, Thierry Chaneliere, François Ramaz, Anne Louchet-Chauvet
2018 Optics Letters  
Ultrasound modulated optical tomography (UOT) is a powerful imaging technique to discriminate healthy from unhealthy biological tissues based on their optical signature. Among the numerous detection techniques developed for acousto-optic imaging, only those based on spectral filtering are intrinsically immune to speckle decorrelation. This paper reports on UOT imaging based on spectral hole burning in Tm:YAG crystal under a moderate magnetic field (200G) with a well-defined orientation. The
more » ... and long-lasting holes translate into a more efficient UOT imaging with a higher contrast and faster imaging frame rate. We demonstrate the potential of this method by imaging calibrated phantom scattering gels.
doi:10.1364/ol.43.003993 pmid:30106935 fatcat:kqlxuafnqvbpxlhng4pyx2pboy