Single-source phased array for imaging through scattering media

Stephen P. Morgan; Chung Wah See; Michael G. Somekh

doi:10.1117/12.200810

31 January 1995 Single-source phased array for imaging through scattering media

Stephen P. Morgan, Chung Wah See, Michael G. Somekh

Proceedings Volume 2326, Photon Transport in Highly Scattering Tissue; (1995) https://doi.org/10.1117/12.200810
Event: International Symposium on Biomedical Optics Europe '94, 1994, Lille, France

Abstract

In heavily scattering media an intensity modulated light source will propagate as a diffusive wave. This technique has been adapted for dark field operation by modulating two lasers in antiphase giving destructive interference along a line equidistant to the two sources. If an object is present in the scattering medium the symmetry is broken so that a signal will be detected along this line. This paper presents a different approach to obtaining this using a single source configured as an interferometer. The fundamental properties of the interferometer are such that conservation of energy ensures that its two arms are modulated in antiphase. The application and advantages of this approach are described.

Citation Download Citation

Stephen P. Morgan, Chung Wah See, and Michael G. Somekh "Single-source phased array for imaging through scattering media", Proc. SPIE 2326, Photon Transport in Highly Scattering Tissue, (31 January 1995); https://doi.org/10.1117/12.200810

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