Amplitude and phase measurements of femtosecond pulses shaped using spectral hole burning in free-base naphthalocyanine-doped films.

S. Fraigne 1 Jean-Pierre Galaup 1 Jean-Louis Le Gouët 1 Manuel Joffre 2 Lionel Canioni 3 Bruno Bousquet 3 Jean-Pierre Likforman 4
1 LAC - Laboratoire Aimé Cotton
2 LOB - Laboratoire d'optique et biosciences
3 CPMOH - Centre de physique moléculaire optique et hertzienne
4 LOA - Laboratoire d'optique appliquée
Abstract : In this work we use a technique of spectroscopy adapted for measuring the amplitude and phase of photon echo signals [7] produced by diffraction of a fs pulse on a spectral hologram. We also improved the technique in terms of spectral resolution in order to measure photon echoes delayed by a few tens of picoseconds. Our study is focused on measuring the coherence time of the sample using a photon echo experiment in the photochemically accumulated regime and on demonstrating the pulse-shaping and time-reversal potentialities of our photo-sensitive material. Spectral holograms are formed through persistent spectral hole burning using a sequence of 2 pump pulses separated by a time delay, in a collinear geometry. The sample is a free base naphtalocyanine embedded in polyvinylbutyral (H2NPc/PVB). The absorption peaks at 783 nm and is 20 nm large (FWHM). Our laser source is a 15-fs, 100MHz, Ti:S oscillator.
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S. Fraigne, Jean-Pierre Galaup, Jean-Louis Le Gouët, Manuel Joffre, Lionel Canioni, et al.. Amplitude and phase measurements of femtosecond pulses shaped using spectral hole burning in free-base naphthalocyanine-doped films.. International Conference on Ultrafast Phenomena, May 2002, Vancouver, Canada. pp.TuE1. ⟨hal-00991589⟩

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