Open AccessUltrasonic tagging of light: Theory
Author(s) -
G. D. Mahan,
Wolfgang. Engler,
J.J. Tiemann,
E. E. Uzgiris
Publication year - 1998
Publication title -
proceedings of the national academy of sciences
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.011
H-Index - 771
eISSN - 1091-6490
pISSN - 0027-8424
DOI - 10.1073/pnas.95.24.14015
Subject(s) - speckle pattern , optics , detector , wavelength , physics , speckle noise , noise (video) , computer science , artificial intelligence , image (mathematics)
A theory is provided for the detection efficiency of diffuse light whose frequency is modulated by an acoustical wave. We derive expressions for the speckle pattern of the modulated light, as well as an expression for the signal-to-noise ratio for the detector. The aim is to develop a new imaging technology for detection of tumors in humans. The acoustic wave is focused into a small geometrical volume, which provides the spatial resolution for the imaging. The wavelength of the light wave can be selected to provide information regarding the kind of tumor.
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