Fiber-optic detection of ultrashort laser pulses diffusely reflected from Intralipid skin phantom: Effect of numerical aperture and scattering anisotropy

Alexey P. Popov, Alexander V. Priezzhev, Risto Myllylä

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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).

Original languageEnglish
Title of host publicationAdvanced Laser Technologies 2005
EditorsIvan A. Shcherbakov, Kexin Xu, Qingyue Wang, Alexander V. Priezzhev, Vladimir I. Pustovoy
PublisherInternational Society for Optics and Photonics SPIE
Volume2
ISBN (Print)978-0-8194-6420-0
DOIs
Publication statusPublished - 21 Sep 2006
MoE publication typeA4 Article in a conference publication
EventAdvanced Laser Technologies 2005 - Tianjin, China
Duration: 3 Sep 20056 Sep 2005

Publication series

SeriesProceedings of SPIE
Volume6344
ISSN0277-786X

Conference

ConferenceAdvanced Laser Technologies 2005
CountryChina
CityTianjin
Period3/09/056/09/05

Keywords

  • Intralipid
  • Laser
  • Numerical aperture
  • Optical fiber
  • Skin phantom
  • Time-of-flight technique

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