Attosecond and femtosecond metrology for plasma mirrors

F. Quéré; H. George; Ph. Martin

doi:10.1117/12.822010

7 May 2009 Attosecond and femtosecond metrology for plasma mirrors

F. Quéré, H. George, Ph. Martin

Proceedings Volume 7359, Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond; 73590E (2009) https://doi.org/10.1117/12.822010
Event: SPIE Optics + Optoelectronics, 2009, Prague, Czech Republic

Abstract

When an intense ultrashort laser pulse impinges on an initially-solid target, it creates a dense plasma at the surface, which reflects a large fraction of the incident light. At high enough intensities, high-order harmonics of the incident laser frequency, associated in the time domain to trains of attosecond pulses, are generated in the light beam specularly reflected by this "plasma mirror". The mechanisms leading to this generation are now relatively well-established, and the first experimental evidence for attosecond pulses generated on plasma mirrors has recently been reported. An accurate characterization of the temporal structure of the light reflected by plasma mirrors, down to the attosecond scale, however remains an experimental challenge. In this paper, we describe three different methods that could be used for such temporal measurements, from the femtosecond to the attosecond time scale. Two of them are interferometric techniques which only require measurements of photons, while the third one is a new configuration of a now well-established method, developed for attosecond pulses generated in gases, and based on photoelectron spectroscopy.

Citation Download Citation

F. Quéré, H. George, and Ph. Martin "Attosecond and femtosecond metrology for plasma mirrors", Proc. SPIE 7359, Harnessing Relativistic Plasma Waves as Novel Radiation Sources from Terahertz to X-Rays and Beyond, 73590E (7 May 2009); https://doi.org/10.1117/12.822010

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