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Optics Letters

Optics Letters


  • Vol. 29, Iss. 3 — Feb. 1, 2004
  • pp: 313–315

Time-wavelength two-dimensional femtosecond fluorescence imaging

Satoshi Takeuchi and Tahei Tahara  »View Author Affiliations

Optics Letters, Vol. 29, Issue 3, pp. 313-315 (2004)

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We report a new femtosecond time-resolved fluorescence spectrometer that enables us to observe fluorescence intensity as a time–wavelength two-dimensional image in a single measurement. This method utilizes a time-to-space conversion technique and fluorescence sum-frequency mixing with a femtosecond gate pulse. It provides a fluorescence image covering temporal and spectral spans of ~2 ps and ~60 nm, respectively. Calibration of the time and intensity axes of the image is made by use of a long-lived dye fluorescence. The two-dimensional fluorescence image of β -carotene obtained demonstrates the high potential of this method for quantitative studies of ultrafast excited-state dynamics.

© 2004 Optical Society of America

OCIS Codes
(190.7220) Nonlinear optics : Upconversion
(300.6280) Spectroscopy : Spectroscopy, fluorescence and luminescence
(320.7150) Ultrafast optics : Ultrafast spectroscopy

Satoshi Takeuchi and Tahei Tahara, "Time-wavelength two-dimensional femtosecond fluorescence imaging," Opt. Lett. 29, 313-315 (2004)

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