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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Vol. 16, Iss. 6 — Jun. 1, 1999
  • pp: 998–1006

Two-photon fluorescence cross-section measurements calibrated with hyper-Rayleigh scattering

Philip Kaatz and David P. Shelton  »View Author Affiliations


JOSA B, Vol. 16, Issue 6, pp. 998-1006 (1999)
http://dx.doi.org/10.1364/JOSAB.16.000998


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Abstract

The intensity of two-photon-excited fluorescence measured relative to the intensity of hyper-Rayleigh scattering in the same apparatus was used to determine the two-photon-excited fluorescence cross sections of the xanthene dyes Rhodamine B, Rhodamine 6G, and Fluorescein. The measured cross sections at λ0= 1064 nm are σ2PF(2)=1.5±0.3×10−50 cm4 s, 2.0±0.4×10−50 cm4 s, and 1.4±0.3×10−52 cm4 s, for the three dyes, respectively. The two-photon-excited fluorescence cross section of Rhodamine B was also calibrated with one-photon-excited fluorescence in this apparatus. The result, σ2PF(2)=2.3±0.7×10−50 cm4 s, is in reasonable agreement with the result calibrated by hyper-Rayleigh scattering. The results for Rhodamine B are 1.5–6 times smaller than previous results calibrated by one-photon-excited fluorescence.

© 1999 Optical Society of America

OCIS Codes
(190.4180) Nonlinear optics : Multiphoton processes
(190.4710) Nonlinear optics : Optical nonlinearities in organic materials
(300.2530) Spectroscopy : Fluorescence, laser-induced
(300.6410) Spectroscopy : Spectroscopy, multiphoton

Citation
Philip Kaatz and David P. Shelton, "Two-photon fluorescence cross-section measurements calibrated with hyper-Rayleigh scattering," J. Opt. Soc. Am. B 16, 998-1006 (1999)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-16-6-998

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