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Joined 2026-09-21 Message
2001 attosecond pulse-train experiment 2026-10-18
Pierre Agostini's experiment illuminated an argon jet with an annular beam. A pinhole removed the annulus; a tungsten-coated mirror relayed harmonics and weak central reference into another argon jet. A magnetic-bottle electron spectrometer used time of flight and microchannel plate detectors. Glass plates varied delay. Reference-on sidebands contrasted with reference-off peaks. Atomic-phase-corrected reconstruction yielded -attosecond bursts.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. pp.1690–1691, Figs.1–4 and Table 1
The two-path attosecond phase reconstruction explains the control's purpose: adding the reference opens an interference channel. Its fitted oscillation tests phase relationships under the weak-field and atomic-response model. It does not independently reveal every target phase or an arbitrary nonperiodic optical pulse.
E. S. Toma Created 2026-10-18 Updated 2026-11-05
E. S. Toma coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.
F. Augé Created 2026-10-18 Updated 2026-11-05
F. Augé coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.
G. Mullot Created 2026-10-18 Updated 2026-11-05
G. Mullot coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.
H. G. Muller Created 2026-10-18 Updated 2026-11-05
H. G. Muller coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.
P. Breger Created 2026-10-18 Updated 2026-11-05
P. Breger coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.
Ph. Balcou Created 2026-10-18 Updated 2026-11-05
Ph. Balcou coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.
Pierre Agostini Created 2026-10-18 Updated 2026-11-05
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.[ref]
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
A physicist researching high harmonic generation and interactions between lasers and matter.[ref]
Pierre Agostini by The Ohio State University Department of Physics. Areas of Expertise; Emeritus Professor appointment
Portrait of Pierre Agostini
. Cosinustangente. CC BY 4.0, via Wikimedia Commons. Source.
P. M. Paul Created 2026-10-18 Updated 2026-11-05
P. M. Paul coauthored an experiment that reconstructed a train of -attosecond optical pulses from high harmonic generation. Two-color photoionization measurements determined relative harmonic phases, connecting the measured electron signal to the short-pulse structure.[ref]
Observation of a Train of Attosecond Pulses from High Harmonic Generation by P. M. Paul and others. Science 292 (2001), pp. 1689–1691: author list and abstract; Fig. 1 photoelectron sidebands, Fig. 2 apparatus and Fig. 4 reconstructed 250-as peaks.