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Optics Letters

Optics Letters

| RAPID, SHORT PUBLICATIONS ON THE LATEST IN OPTICAL DISCOVERIES

  • Vol. 23, Iss. 4 — Feb. 15, 1998
  • pp: 277–279

Femtosecond high-sensitivity, chirp-free transient absorption spectroscopy using kilohertz lasers

Victor I. Klimov and Duncan W. McBranch  »View Author Affiliations


Optics Letters, Vol. 23, Issue 4, pp. 277-279 (1998)
http://dx.doi.org/10.1364/OL.23.000277


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Abstract

A simple method is demonstrated for high-sensitivity, chirp-free measurements of femtosecond (fs) transient absorption over the entire bandwidth of a white-light continuum probe. This technique uses phase-sensitive detection, with spectral scanning and simultaneous adjustment of the time delay between pump and probe pulses; it permits a direct measurement of spectra undistorted by chirp at all time scales, limited only by the resolution of the fs source. The method is applied to study the ultrafast relaxation dynamics of π-conjugated oligomers and semiconductor nanocrystals.

© 1998 Optical Society of America

OCIS Codes
(190.4400) Nonlinear optics : Nonlinear optics, materials
(320.0320) Ultrafast optics : Ultrafast optics
(320.7150) Ultrafast optics : Ultrafast spectroscopy

Citation
Victor I. Klimov and Duncan W. McBranch, "Femtosecond high-sensitivity, chirp-free transient absorption spectroscopy using kilohertz lasers," Opt. Lett. 23, 277-279 (1998)
http://www.opticsinfobase.org/ol/abstract.cfm?URI=ol-23-4-277

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