To what extent is coherence lost in tissue?

Tomas Hode; Peter Jenkins; Stefan Jordison; Lars Hode

doi:10.1117/12.878827

10 February 2011 To what extent is coherence lost in tissue?

Tomas Hode, Peter Jenkins, Stefan Jordison, Lars Hode

Proceedings Volume 7887, Mechanisms for Low-Light Therapy VI; 788703 (2011) https://doi.org/10.1117/12.878827
Event: SPIE BiOS, 2011, San Francisco, California, United States

Abstract

In a series of experiments we investigated the extent to which coherence is preserved in tissue. We investigated whether the decrease in coherence length is dependent upon the coherence length of the illuminating light and possibly also if the light is polarized. We compared highly coherent light from a HeNe laser, and less coherent light from a semiconductor laser, in scattering media such as raw ground beef. We studied the laser speckle contrast after passing through 1 - 2 cm of meat. The conclusion is that the laser light is still coherent enough to form laser speckles after passing through a 2 cm thickness of meat.

Citation Download Citation

Tomas Hode, Peter Jenkins, Stefan Jordison, and Lars Hode "To what extent is coherence lost in tissue?", Proc. SPIE 7887, Mechanisms for Low-Light Therapy VI, 788703 (10 February 2011); https://doi.org/10.1117/12.878827

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