Time-wavelength two-dimensional femtosecond fluorescence imaging
Optics Letters, Vol. 29, Issue 3, pp. 313-315 (2004)
http://dx.doi.org/10.1364/OL.29.000313
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Abstract
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
Citation
Satoshi Takeuchi and Tahei Tahara, "Time-wavelength two-dimensional femtosecond fluorescence imaging," Opt. Lett. 29, 313-315 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-3-313
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