Complete temporal characterization of asymmetric pulse compression in a laser wakefield.

Schreiber, J; Bellei, C; Mangles, S P D; Kamperidis, C; Kneip, S; Nagel, S R; Palmer, C A J; Rajeev, P P; Streeter, M J V; Najmudin, Z

Schreiber, J; Bellei, C; Mangles, S P D; Kamperidis, C; Kneip, S; Nagel, S R; Palmer, C A J; Rajeev, P P; Streeter, M J V; Najmudin, Z.

Afiliación

Schreiber J; Blackett Laboratory, Imperial College, London SW7 2AZ, United Kingdom. j.schreiber@imperial.ac.uk

Phys Rev Lett ; 105(23): 235003, 2010 Dec 03.

Article en En | MEDLINE | ID: mdl-21231474

RESUMEN

We present complete experimental characterization of the temporal shape of an intense ultrashort 200-TW laser pulse driving a laser wakefield. The phase of the pulse was uniquely measured by using (second-order) frequency-resolved optical gating. The pulses are asymmetrically compressed and exhibit a positive chirp consistent with the expected asymmetric self-phase-modulation due to photon acceleration or deceleration in a relativistic plasma wave. The measured pulse duration decreases linearly with increasing length and density of the plasma, in quantitative agreement with the intensity-dependent group velocity variation in the plasma wave.

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Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Rev Lett Año: 2010 Tipo del documento: Article País de afiliación: Reino Unido Pais de publicación: Estados Unidos

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