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Article Dans Une Revue Optics Express Année : 2015

In-line femtosecond common-path interferometer in reflection mode.

Résumé

An innovative method to perform femtosecond time-resolved interferometry in reflection mode is proposed. The experiment consists in the combined use of a pump-probe setup and of a fully passive in-line femtosecond common-path interferometer. The originality of this interferometer relies on the use of a single birefringent crystal first to generate a pair of phase-locked pulses and second to recombine them to interfere. As predicted by analytical modeling, this interferometer measures the temporal derivative of the ultrafast changes of the complex optical reflection coefficient of the sample. Working conditions are illustrated through picosecond opto-acoustic experiments on a thin film.

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hal-01252589 , version 1 (11-01-2016)

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J Chandezon, Jean-Michel Rampnoux, S Dilhaire, Bertrand Audoin, Y Guillet. In-line femtosecond common-path interferometer in reflection mode.. Optics Express, 2015, 23 (21), pp.27011-9. ⟨10.1364/OE.23.027011⟩. ⟨hal-01252589⟩
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