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Proceedings Paper

Fiber-optic detection of ultrashort laser pulses diffusely reflected from intralipid skin phantom: effect of numerical aperture and scattering anisotropy
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Paper Abstract

In this paper, simulations by Monte Carlo method are applied to reveal the effect of numerical aperture (NA) of a detector (backward registration) and scattering anisotropy of a sample (g) on the probing depth of the sample. Correlation between temporal and depth-resolved detection is investigated as a function of the considered characteristics, NA and g. Decrease of the numerical aperture of the detector or increase of the scattering anisotropy of the sample lead to probing of deeper depths and larger region around. These depths correspond to the maximal numbers of the detected photons measured with time-resolved registration. The better correlation comes from the use of fibers with smaller apertures and media with strong forwards scattering (high value of anisotropy factor).

Paper Details

Date Published: 10 June 2006
PDF: 6 pages
Proc. SPIE 6344, Advanced Laser Technologies 2005, 63441V (10 June 2006); doi: 10.1117/12.693608
Show Author Affiliations
Alexey P. Popov, M.V. Lomonosov Moscow State Univ. (Russia)
Univ. of Oulu (Finland)
Alexander V. Priezzhev, M.V. Lomonosov Moscow State Univ. (Russia)
Risto A. Myllylä, Univ. of Oulu (Finland)


Published in SPIE Proceedings Vol. 6344:
Advanced Laser Technologies 2005
Ivan A. Shcherbakov; Kexin Xu; Qingyue Wang; Alexander V. Priezzhev; Vladimir I. Pustovoy, Editor(s)

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