Extinction measurements in diffusing mammalian tissue with heterodyne detection and a titanium:sapphire laser
- 20 April 1995
- journal article
- Published by Optica Publishing Group in Applied Optics
- Vol. 34 (12), 2045-2054
- https://doi.org/10.1364/ao.34.002045
Abstract
Total optical absorption in mammalian tissues is measured in the near infrared by the use of heterodyne detection and a Ti:sapphire laser. Because of the high sensitivity, directivity, and signal-to-noise ratio of the setup, we were able to detect coherent photons after attenuation by more than 9 optical densities. This method allows us to detect unscattered photons that are passing through more than 7 mm of various tissues such as brain, muscle, liver, skin, and fat selectively.This publication has 43 references indexed in Scilit:
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