= Pierre Agostini
{c}
{tag=Physicist}
{wiki}
= P. Agostini
{c}
{synonym}
<Pierre Agostini> coauthored the measurement of a train of <attosecond> <optical pulses> synthesized from <high harmonic generation>. Measuring only the harmonic intensities does not determine the pulse train: the relative <spectral phases> are also needed. Their two-colour <photoionization> measurement recovered those <spectral phases>, giving reconstructed peaks about 250 <attoseconds> wide. This joined generation with a measurable test of temporal structure, rather than inferring a short pulse solely from a broad <optical spectrum>.<Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others>[2001, abstract and Figure 4: phase-locked harmonics, phase measurement and reconstructed pulse train]{ref}
A <physicist> researching <high harmonic generation> and interactions between <lasers> and matter.<Pierre Agostini by The Ohio State University Department of Physics>[Areas of Expertise; Emeritus Professor appointment]{ref}
\Image[https://commons.wikimedia.org/wiki/Special:Redirect/file/Pierre%20Agostini.jpg?width=250]
{title=Portrait of <Pierre Agostini>}
{description=Cosinustangente. https://creativecommons.org/licenses/by/4.0/[CC BY 4.0], via Wikimedia Commons.}
{source=https://commons.wikimedia.org/wiki/File:Pierre_Agostini.jpg}
{width=250}
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