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Efficient energy absorption of intense ps-laser pulse into nanowire target

Authors :
Keiji Nagai
Kazuo Tanaka
Syuta Honda
Hideaki Habara
Mitsuhiro Katayama
Hitoshi Sakagami
Source :
Physics of Plasmas. 23:063105
Publication Year :
2016
Publisher :
AIP Publishing, 2016.

Abstract

The interaction between ultra-intense laser light and vertically aligned carbon nanotubes is investigated to demonstrate efficient laser-energy absorption in the ps laser-pulse regime. Results indicate a clear enhancement of the energy conversion from laser to energetic electrons and a simultaneously small plasma expansion on the surface of the target. A two-dimensional plasma particle calculation exhibits a high absorption through laser propagation deep into the nanotube array, even for a dense array whose structure is much smaller than the laser wavelength. The propagation leads to the radial expansion of plasma perpendicular to the nanotubes rather than to the front side. These features may contribute to fast ignition in inertial confinement fusion and laser particle acceleration, both of which require high current and small surface plasma simultaneously.

Details

ISSN :
10897674 and 1070664X
Volume :
23
Database :
OpenAIRE
Journal :
Physics of Plasmas
Accession number :
edsair.doi.dedup.....038014fe198f68c177a90aeaf3b33771