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Journal of the Optical Society of America B

Journal of the Optical Society of America B

| OPTICAL PHYSICS

  • Editor: Henry M. Van Driel
  • Vol. 25, Iss. 10 — Oct. 1, 2008
  • pp: 1625–1626

Comment on “Ultrasensitive femtosecond time-resolved fluorescence spectroscopy for relaxation processes by using parametric amplification”

Piotr Fita and Czeslaw Radzewicz  »View Author Affiliations


JOSA B, Vol. 25, Issue 10, pp. 1625-1626 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001625


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Abstract

A recent paper [ J. Opt. Soc. Am. B 24, 1633 (2007)] reports the gain and sensitivity of a time-resolved fluorescence spectrometer based on parametric amplification. We question the claimed detection limit and explanation for the unusual temporal shape of the measured signal at very low levels of fluorescence. We provide an alternative explanation for the observations. Several other points are also clarified.

© 2008 Optical Society of America

OCIS Codes
(190.4410) Nonlinear optics : Nonlinear optics, parametric processes
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(300.6500) Spectroscopy : Spectroscopy, time-resolved

ToC Category:
Ultrafast Optics

History
Original Manuscript: November 2, 2007
Revised Manuscript: March 27, 2008
Manuscript Accepted: March 28, 2008
Published: September 12, 2008

Citation
Piotr Fita and Czeslaw Radzewicz, "Comment on “Ultrasensitive femtosecond time-resolved fluorescence spectroscopy for relaxation processes by using parametric amplification”," J. Opt. Soc. Am. B 25, 1625-1626 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-10-1625


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References

  1. X.-F. Han, X.-H. Chen, Y.-X. Weng, and J.-Y. Zhang, “Ultrasensitive femtosecond time-resolved fluorescence spectroscopy for relaxation processes by using parametric amplification,” J. Opt. Soc. Am. B 24, 1633-1638 (2007). [CrossRef]
  2. F. Treussart, R. Alléaume, V. Le Floc'h, L. T. Xiao, J.-M. Courty and J.-F. Roch, “Direct measurement of the photon statistics of a triggered single photon source,” Phys. Rev. Lett. 89, 093601 (2002). [CrossRef]
  3. D. V. O'Connor and D. Phillips, Time-Correlated Single Photon Counting (Academic, 1984).
  4. P. Fita, Y. Stepanenko, and C. Radzewicz, “Femtosecond transient fluorescence spectrometer based on parametric amplification,” Appl. Phys. Lett. 86, 021909 (2005). [CrossRef]

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