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Cited by 361Laser-Matter Interactions and ApplicationsPhotorefractive and Nonlinear OpticsLaser-Plasma Interactions and Diagnostics

Phase Matching of High-Order Harmonics in Hollow Waveguides

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Durfee, Charles G., Rundquist, Andy R., Backus, Sterling, Herne, Catherine, Murnane, Margaret M., Kapteyn, Henry C.·1999·Physical Review Letters
DOI 10.1103/physrevlett.83.2187
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Abstract

We investigate the phase matching of a high-harmonic generation by intense, 20 fs laser pulses in a gas-filled capillary waveguide. We identify several regimes in which the harmonic field can build up coherently: a balance of atomic and waveguide dispersions, noncollinear Cerenkov phase matching, and a balance of atomic and plasma dispersions. The role of atomic dispersion is examined by measuring and calculating the harmonic signal for several gases. We also predict and provide preliminary evidence for a regime where phase matching occurs only at specific fractional ionization levels, where the harmonic signal is sensitive to the absolute phase of the carrier wave.

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  • The current status of HHG as a light source is that we have good predictive power over optimization of HHG for simple phase matching in weakly ionized gases; optimally, the peak intensity of the focused beam should drive the ionization to the 'critical' (phase-matched) ionization level at the peak of the pulse [128,131,132].

    “The current status of HHG as a light source is that we have good predictive power over optimization of HHG for simple phase matching in weakly ionized gases; optimally, the peak intensity of the focused beam should drive the ionization to the 'critical' (phase-matched) ionization level at the peak of the pulse [128,131,132].”

    From Roadmap of ultrafast x-ray atomic and molecular physics (2018) · cites this paper as [132]

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References 24 · Cited by 361

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Authors
Durfee, C. G., Rundquist, A. R., Backus, S., Herne, C., Murnane, M. M., & Kapteyn, H. C.
Affiliations
University of Michigan (US)
ORCID
Venue
Physical Review Letters
Publisher
American Physical Society (APS)
Published
1999-09-13
Volume
83
Issue
11
Pages
2187-2190
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
DOI
10.1103/physrevlett.83.2187
OpenAlex
W1996984962
Cited by
361
References
24
Citations by year
2026: 2 · 2025: 6 · 2024: 8 · 2023: 5 · 2022: 9 · 2021: 11 · 2020: 8 · 2019: 13 · 2018: 15 · 2017: 17 · 2016: 17 · 2015: 12 · 2014: 9 · 2013: 11 · 2012: 21
FWCI
12.34
Type
journal article
Language
en
Open access
Licence
Locations
  • Physical Review Letters (publishedVersion)
  • arXiv (Cornell University) (submittedVersion, cc-by-nc-nd)
  • arXiv (Cornell University)
Topics
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Laser-Matter Interactions and Applications
  • Physical Sciences › Physics and Astronomy › Atomic and Molecular Physics, and Optics › Photorefractive and Nonlinear Optics
  • Physical Sciences › Physics and Astronomy › Nuclear and High Energy Physics › Laser-Plasma Interactions and Diagnostics
Keywords
high harmonic generation, phase matching, hollow waveguide, capillary waveguide, gas-filled waveguide, noncollinear phase matching, atomic dispersion, plasma dispersion, high-intensity laser pulses, fractional ionization

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