Pulsed ultrasound modulated optical tomography utilizing the harmonic response of lock-in detection

Ruan, H. and Mather, M.L. and Morgan, Stephen P. (2013) Pulsed ultrasound modulated optical tomography utilizing the harmonic response of lock-in detection. Applied Optics, 52 (19). pp. 4755-4762. ISSN 1559-128X

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Abstract

Ultrasound modulated optical tomography (USMOT) can image the optical properties of a scattering

medium at a spatial resolution approaching that of ultrasound (US). A lock-in parallel speckle detection

technique is proposed to detect pulsed US modulated light using a multipixel detector. The frequency

components of the pass band match those of the US pulse train and provide efficient detection. The modulation

depth is extracted by taking the difference between a pair of speckle patterns modulated by a pair

of phase-inversed US bursts. Modification to pulse inversion mode enables the second harmonic US

modulation due to nonlinear US propagation to be detected. © 2013 Optical Society of America

OCIS codes: (110.6150) Speckle imaging; (110.0113) Imaging through turbid media.

Item Type: Article
Schools/Departments: University of Nottingham UK Campus > Faculty of Engineering > Department of Electrical and Electronic Engineering
Identification Number: https://doi.org/10.1364/AO.52.004755
Depositing User: de Sousa, Mrs Shona
Date Deposited: 31 Mar 2014 11:04
Last Modified: 14 Sep 2016 14:32
URI: http://eprints.nottingham.ac.uk/id/eprint/2727

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