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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 29, Iss. 8 — Apr. 15, 2004
  • pp: 884–886

Tunable two-dimensional femtosecond spectroscopy

T. Brixner, I. V. Stiopkin, and G. R. Fleming  »View Author Affiliations


Optics Letters, Vol. 29, Issue 8, pp. 884-886 (2004)
http://dx.doi.org/10.1364/OL.29.000884


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Abstract

We have developed a two-dimensional (2D) Fourier-transform femtosecond spectroscopy technique for the visible spectral region. Three-pulse photon echo signals are generated in a phase-matched noncollinear four-wave mixing box geometry that employs a 3-kHz repetition-rate laser system and optical parametric amplification. Nonlinear signals are fully characterized in amplitude and phase by spectral interferometry. Unlike for previous setups, we achieve long-term phase stability by employing diffractive optics and interferometric accuracy of excitation-pulse time delays by using movable glass wedges. As an example of this technique, 2D correlation and relaxation spectra at 600 nm are shown for a solution of Nile Blue dye in acetonitrile.

© 2004 Optical Society of America

OCIS Codes
(300.6290) Spectroscopy : Spectroscopy, four-wave mixing
(320.7150) Ultrafast optics : Ultrafast spectroscopy

Citation
T. Brixner, I. V. Stiopkin, and G. R. Fleming, "Tunable two-dimensional femtosecond spectroscopy," Opt. Lett. 29, 884-886 (2004)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-29-8-884

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