Journal
ANNALEN DER PHYSIK
Volume 525, Issue 1-2, Pages 87-96Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/andp.201200160
Keywords
Extreme-ultraviolet light; high-order harmonic generation; plasmonic waveguide; surface plasmon resonance; atomic line emission
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Funding
- Creative Research Initiative Program of the National Research Foundation of the Republic of Korea
- National Research Foundation of Korea [2010-00471, 2011-0031558] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Recent experimental data of high-order harmonic generation (HHG), obtained by use of the plasmonic field enhancement of nanostructure bowties and funnel-waveguides, are presented. Emphasis is laid on reproduction of previous experimental results and also elucidation of the fundamental limitations associated with the nanostructure thermal damage, small laser-gas interaction volume, and atomic line emission in the plasmon-driven HHG process. In addition, the dominance of coherent harmonics is quantitatively verified by implementing a two-beam interference experiment using a pair of funnel-waveguides. This study proves that funnel-waveguides are a superior plasmonic device capable of providing not only high thermal immunity but also sufficient atom emitters to produce practically usable extreme-ultraviolet (EUV) radiation in a reproducible manner.
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