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Title: Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses

Abstract

Here, we numerically demonstrate the generation of intense, low-divergence soft X-ray isolated attosecond pulses in a gas-filled hollow waveguide using synthesized few-cycle two-color laser waveforms. The waveform is a superposition of a fundamental and its second harmonic optimized such that highest harmonic yields are emitted from each atom. We then optimize the gas pressure and the length and radius of the waveguide such that bright coherent high-order harmonics with angular divergence smaller than 1 mrad are generated, for photon energy from the extreme ultraviolet to soft X-rays. By selecting a proper spectral range enhanced isolated attosecond pulses are generated. We study how dynamic phase matching caused by the interplay among waveguide mode, neutral atomic dispersion, and plasma effect is achieved at the optimal macroscopic conditions, by performing time-frequency analysis and by analyzing the evolution of the driving laser’s electric field during the propagation. Our results, when combined with the on-going push of high-repetition-rate lasers (sub- to few MHz’s) may eventually lead to the generation of high-flux, low-divergence soft X-ray tabletop isolated attosecond pulses for applications.

Authors:
 [1];  [2];  [3]
  1. Nanjing Univ. of Science and Technology, Jiangsu (People's Republic of China)
  2. Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States)
  3. Kansas State Univ., Manhattan, KS (United States)
Publication Date:
Research Org.:
Kansas State Univ., Manhattan, KS (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1361697
Grant/Contract Number:  
FG02-86ER13491
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Scientific Reports
Additional Journal Information:
Journal Volume: 6; Journal Issue: 1; Journal ID: ISSN 2045-2322
Publisher:
Nature Publishing Group
Country of Publication:
United States
Language:
English
Subject:
73 NUCLEAR PHYSICS AND RADIATION PHYSICS; attosecond science; high-harmonic generation

Citation Formats

Jin, Cheng, Hong, Kyung -Han, and Lin, C. D. Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses. United States: N. p., 2016. Web. doi:10.1038/srep38165.
Jin, Cheng, Hong, Kyung -Han, & Lin, C. D. Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses. United States. https://doi.org/10.1038/srep38165
Jin, Cheng, Hong, Kyung -Han, and Lin, C. D. 2016. "Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses". United States. https://doi.org/10.1038/srep38165. https://www.osti.gov/servlets/purl/1361697.
@article{osti_1361697,
title = {Optimal generation of spatially coherent soft X-ray isolated attosecond pulses in a gas-filled waveguide using two-color synthesized laser pulses},
author = {Jin, Cheng and Hong, Kyung -Han and Lin, C. D.},
abstractNote = {Here, we numerically demonstrate the generation of intense, low-divergence soft X-ray isolated attosecond pulses in a gas-filled hollow waveguide using synthesized few-cycle two-color laser waveforms. The waveform is a superposition of a fundamental and its second harmonic optimized such that highest harmonic yields are emitted from each atom. We then optimize the gas pressure and the length and radius of the waveguide such that bright coherent high-order harmonics with angular divergence smaller than 1 mrad are generated, for photon energy from the extreme ultraviolet to soft X-rays. By selecting a proper spectral range enhanced isolated attosecond pulses are generated. We study how dynamic phase matching caused by the interplay among waveguide mode, neutral atomic dispersion, and plasma effect is achieved at the optimal macroscopic conditions, by performing time-frequency analysis and by analyzing the evolution of the driving laser’s electric field during the propagation. Our results, when combined with the on-going push of high-repetition-rate lasers (sub- to few MHz’s) may eventually lead to the generation of high-flux, low-divergence soft X-ray tabletop isolated attosecond pulses for applications.},
doi = {10.1038/srep38165},
url = {https://www.osti.gov/biblio/1361697}, journal = {Scientific Reports},
issn = {2045-2322},
number = 1,
volume = 6,
place = {United States},
year = {Thu Dec 08 00:00:00 EST 2016},
month = {Thu Dec 08 00:00:00 EST 2016}
}

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Cited by: 10 works
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Works referenced in this record:

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Works referencing / citing this record:

Control of soft X-ray high harmonic spectrum by using two-color laser pulses
journal, January 2018


Enhanced high-harmonic generation up to the soft X-ray region driven by mid-infrared pulses mixed with their third harmonic
text, January 2018


Waveform control in generations of intense water window attosecond pulses via multi-color combined field
journal, May 2019