Generation of Bright, Spatially Coherent Soft X-Ray High Harmonics in a Hollow Waveguide Using Two-Color Synthesized Laser Pulses
Name
PhysRevLett.115.043901.pdf
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1.37 MB
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Adobe PDF
Checksum (MD5)
5407f98bfd1c3c5e00cc6dc6e2e67709
Author(s)
Jin, Cheng
Hong, Kyung-Han
Lin, C. D.
Stein, Gregory Joseph
Date Issued
July 2015
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Jin, Cheng, Gregory J. Stein, Kyung-Han Hong, and C. D. Lin. “Generation of Bright, Spatially Coherent Soft X-Ray High Harmonics in a Hollow Waveguide Using Two-Color Synthesized Laser Pulses.” Physical Review Letters 115, no. 4 (July 22, 2015). © 2015 American Physical Society
Version
Final published version
Abstract
We investigate the efficient generation of low-divergence high-order harmonics driven by waveform-optimized laser pulses in a gas-filled hollow waveguide. The drive waveform is obtained by synthesizing two-color laser pulses, optimized such that highest harmonic yields are emitted from each atom. Optimization of the gas pressure and waveguide configuration has enabled us to produce bright and spatially coherent harmonics extending from the extreme ultraviolet to soft x rays. Our study on the interplay among waveguide mode, atomic dispersion, and plasma effect uncovers how dynamic phase matching is accomplished and how an optimized waveform is maintained when optimal waveguide parameters (radius and length) and gas pressure are identified. Our analysis should help laboratory development in the generation of high-flux bright coherent soft x rays as tabletop light sources for applications.
MIT Department
Massachusetts Institute of Technology. Department of Electrical Engineering and Computer Science
Massachusetts Institute of Technology. Research Laboratory of Electronics
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.115.043901
