Journal
APPLIED PHYSICS LETTERS
Volume 102, Issue 20, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.4807440
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Funding
- National Research Foundation of Korea [2012-0000165, 2012-0004777, 2012-0005900]
- Top Brand and Asian Laser Center Projects of GIST
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We developed a gas-filled capillary with a tapered density for laser wakefield acceleration, of which the tapering was realized by employing gas feed-lines with different cross-sections. Plasma diagnostics show that the capillary plasma has a significant longitudinal density tapering and a transverse parabolic profile. By using the tapered capillary plasma, high transmission (over 90%) of laser beams, meaning good optical guiding, was observed. These results demonstrate the potential of the tapered plasma source for high-energy laser wakefield acceleration, where the dephasing problem is minimized. (C) 2013 AIP Publishing LLC.
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