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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 1 — Jan. 1, 1999
  • pp: 224–229

Spatial distribution of two-photon-excited fluorescence in scattering media

Jinpin Ying, Feng Liu, and R. R. Alfano  »View Author Affiliations


Applied Optics, Vol. 38, Issue 1, pp. 224-229 (1999)
http://dx.doi.org/10.1364/AO.38.000224


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Abstract

Spatial distribution of two-photon-excited fluorescence (TPF) for dye beneath the surface of a highly scattering medium was investigated with picosecond laser pulses at 1064 nm. The active scattering media consisted of a suspension of polystyrene particles in a solution of Rhodamine 590 Tetrafluoroborate dye. With the increase of scattering strength of the medium, the location of the maximum TPF intensity was found to move closer to the surface away from the focal region; the intensity of TPF was not confined to the focal region as in the case of nonscattering medium but was more evenly distributed. The spatial resolution of nonlinear optical microscopy for probing a scattering medium is degraded. Taking into account the scattering of the medium qualitatively explains the observed TPF spatial distribution.

© 1999 Optical Society of America

OCIS Codes
(110.2970) Imaging systems : Image detection systems
(170.2520) Medical optics and biotechnology : Fluorescence microscopy
(170.3660) Medical optics and biotechnology : Light propagation in tissues
(170.3880) Medical optics and biotechnology : Medical and biological imaging
(290.7050) Scattering : Turbid media

History
Original Manuscript: January 21, 1998
Revised Manuscript: August 24, 1998
Published: January 1, 1999

Citation
Jinpin Ying, Feng Liu, and R. R. Alfano, "Spatial distribution of two-photon-excited fluorescence in scattering media," Appl. Opt. 38, 224-229 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-1-224

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