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Article Dans Une Revue Optics Letters Année : 2010

Ultrafast acoustics in the middle UV range: coherent phonons at higher frequencies and in smaller objects

S. Ayrinhac
  • Fonction : Auteur
A. Le Louarn
  • Fonction : Auteur
P.-A. Mante
  • Fonction : Auteur
P. Emery
  • Fonction : Auteur

Résumé

We show that the propagation of coherent acoustic phonons generated by femtosecond optical excitation can be clearly resolved using a probe laser in the middle UV (MUV) range. The MUV probe is easily produced from a highrepetition- rate femtosecond laser and a homemade frequency tripler. We present various experimental results that demonstrate efficient and high frequency detection of acoustic phonons. Thus, we show that the MUV range offers a unique way to reach higher frequencies and probe smaller objects in ultrafast acoustics
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Dates et versions

hal-00645550 , version 1 (28-11-2011)

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  • HAL Id : hal-00645550 , version 1

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S. Ayrinhac, Arnaud Devos, A. Le Louarn, P.-A. Mante, P. Emery. Ultrafast acoustics in the middle UV range: coherent phonons at higher frequencies and in smaller objects. Optics Letters, 2010, 35 (20), pp.1. ⟨hal-00645550⟩
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