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Optimizing conversion efficiency and reducing ion energy in a laser-produced Gd plasma
Date Issued
2012
Date Available
2012-06-19T15:56:09Z
Abstract
We have demonstrated an efficient extreme ultraviolet (EUV) source at 6.7 nm by irradiating Gd targets with 0.8 and 1.06 μm laser pulses of 140 fs to 10 ns duration. Maximum conversion efficiency of 0.4% was observed within a 0.6% bandwidth. A Faraday cup observed ion yield and time of flight signals for ions from plasmas generated by each laser. Ion kinetic energy was lower for shorter pulse durations, which yielded higher electron temperatures required for efficient EUV emission, due to higher laser intensity. Picosecond laser pulses were found to be the best suited to 6.7 nm EUV source generation.
Sponsorship
Science Foundation Ireland
Type of Material
Journal Article
Publisher
American Institute of Physics
Journal
Applied Physics Letters
Volume
100
Issue
6
Copyright (Published Version)
2012 American Institute of Physics
Subject – LCSH
Gadolinium
Laser plasmas
Language
English
Status of Item
Peer reviewed
ISSN
0003-6951 (print)
1077-3118 (online)
This item is made available under a Creative Commons License
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