Temporal coherence of ultrashort high-order harmonic pulses

M Bellini; C Lynga; A Tozzi; M. B Gaarde; T. W Hansch; Anne L'Huillier; Claes-Göran Wahlström

doi:10.1103/PhysRevLett.81.297

Temporal coherence of ultrashort high-order harmonic pulses

M Bellini, C Lynga, A Tozzi, M. B Gaarde, T. W Hansch, Anne L'Huillier, Claes-Göran Wahlström

Atomic Physics

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Abstract

We have studied the temporal coherence of high-order harmonics (up to the 15th order) produced by focusing 100 fs laser pulses into an argon gas jet. We measure the visibility of the interference fringes, produced when two spatially separated harmonic sources interfere in the far field, as a function of the time delay between the two sources. In general, we find long coherence times, comparable to the expected pulse durations of the harmonics. For some of the harmonics, the interference pattern exhibits two regions, with significantly different coherence times. These results are interpreted in terms of different electronic trajectories contributing to harmonic generation. [S0031-9007(98)05569-7].

Original language	English
Pages (from-to)	297-300
Journal	Physical Review Letters
Volume	81
Issue number	2
DOIs	https://doi.org/10.1103/PhysRevLett.81.297
Publication status	Published - 1998

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Atom and Molecular Physics and Optics

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10.1103/PhysRevLett.81.297

Bellini1998

The Nobel Prize in Physics 2023
L'huillier, A. (Recipient), Agostini, P. (Recipient) & Krausz, F. (Recipient), 2023
Prize: Nobel Prize

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title = "Temporal coherence of ultrashort high-order harmonic pulses",

abstract = "We have studied the temporal coherence of high-order harmonics (up to the 15th order) produced by focusing 100 fs laser pulses into an argon gas jet. We measure the visibility of the interference fringes, produced when two spatially separated harmonic sources interfere in the far field, as a function of the time delay between the two sources. In general, we find long coherence times, comparable to the expected pulse durations of the harmonics. For some of the harmonics, the interference pattern exhibits two regions, with significantly different coherence times. These results are interpreted in terms of different electronic trajectories contributing to harmonic generation. [S0031-9007(98)05569-7].",

author = "M Bellini and C Lynga and A Tozzi and Gaarde, {M. B} and Hansch, {T. W} and Anne L'Huillier and Claes-G{\"o}ran Wahlstr{\"o}m",

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T1 - Temporal coherence of ultrashort high-order harmonic pulses

AU - Bellini, M

AU - Lynga, C

AU - Tozzi, A

AU - Gaarde, M. B

AU - Hansch, T. W

AU - L'Huillier, Anne

AU - Wahlström, Claes-Göran

PY - 1998

Y1 - 1998

N2 - We have studied the temporal coherence of high-order harmonics (up to the 15th order) produced by focusing 100 fs laser pulses into an argon gas jet. We measure the visibility of the interference fringes, produced when two spatially separated harmonic sources interfere in the far field, as a function of the time delay between the two sources. In general, we find long coherence times, comparable to the expected pulse durations of the harmonics. For some of the harmonics, the interference pattern exhibits two regions, with significantly different coherence times. These results are interpreted in terms of different electronic trajectories contributing to harmonic generation. [S0031-9007(98)05569-7].

AB - We have studied the temporal coherence of high-order harmonics (up to the 15th order) produced by focusing 100 fs laser pulses into an argon gas jet. We measure the visibility of the interference fringes, produced when two spatially separated harmonic sources interfere in the far field, as a function of the time delay between the two sources. In general, we find long coherence times, comparable to the expected pulse durations of the harmonics. For some of the harmonics, the interference pattern exhibits two regions, with significantly different coherence times. These results are interpreted in terms of different electronic trajectories contributing to harmonic generation. [S0031-9007(98)05569-7].

U2 - 10.1103/PhysRevLett.81.297

DO - 10.1103/PhysRevLett.81.297

M3 - Article

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SP - 297

EP - 300

JO - Physical Review Letters

JF - Physical Review Letters

IS - 2

ER -

Temporal coherence of ultrashort high-order harmonic pulses

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The Nobel Prize in Physics 2023

Cite this