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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 15, Iss. 24 — Nov. 26, 2007
  • pp: 16124–16129

Broadband ultrafast spectroscopy using a photonic crystal fiber: application to the photophysics of malachite green

Jérémie Léonard, Nhan Lecong, Jean-Pierre Likforman, Olivier Crégut, Stefan Haacke, Pierre Viale, Philippe Leproux, and Vincent Couderc  »View Author Affiliations

Optics Express, Vol. 15, Issue 24, pp. 16124-16129 (2007)

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Femtosecond single-pulsed supercontinua (SC) are produced in a short sub-cm piece of photonic crystal fiber. The SC span from 450 nm to more than 1.1 µm with 1-nJ energy injection. UV light down to 340 nm is observed with increased injection power. Using such a single-pulsed SC we implemented a compact transient absorption spectrometer with broadband detection and 150-fs FWHM time resolution to monitor the ultrafast dynamics of the electronic states of malachite green in ethanol excited to the S2 state. The full spectral evolution is observed from 450 nm to 1050 nm, with high sensitivity and a signal-to-noise ratio as high as 1000.

© 2007 Optical Society of America

OCIS Codes
(190.4370) Nonlinear optics : Nonlinear optics, fibers
(300.6390) Spectroscopy : Spectroscopy, molecular
(320.7150) Ultrafast optics : Ultrafast spectroscopy

ToC Category:

Original Manuscript: July 3, 2007
Revised Manuscript: August 24, 2007
Manuscript Accepted: September 2, 2007
Published: November 20, 2007

Jérémie Léonard, Nhan Lecong, Jean-Pierre Likforman, Olivier Crégut, Stefan Haacke, Pierre Viale, Philippe Leproux, and Vincent Couderc, "Broadband ultrafast spectroscopy using a photonic crystal fiber: application to the photophysics of malachite green," Opt. Express 15, 16124-16129 (2007)

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