title: Ultrasonic tagging of photon paths in scattering media: parallel speckle modulation processing.
abstract: Tagging of photon trajectories in scattering media is possible by application of a localized ultrasonic field to the sample and by measurement of the induced speckle modulation. Instead of using a single optical detector, which integrates the signal of many speckle grains, we propose a more efficient detection scheme that uses a CCD camera and parallel lock-in detection to record the full modulation of the speckle. The advantage of this multiplex detection is demonstrated, as well as the imaging capabilities of the process for biological tissues.
authors: S
authors: S
authors: Lévêque
authors: A C
authors: AC
authors: Boccara
authors: M
authors: M
authors: Lebec
authors: H
authors: H
authors: Saint-Jalmes