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Proceedings Paper

Test of an argon cusp plasma for tin LPP power scaling
Author(s): Malcolm W. McGeoch
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Paper Abstract

Scaling the power of the tin droplet laser-produced-plasma (LPP) extreme ultraviolet (EUV) source to 500W has eluded the industry after a decade of effort. In 2014 we proposed [2] a solution: placing the laser-plasma interaction region within an argon plasma in a magnetic cusp. This would serve to ionize tin atoms and guide them to a large area annular beam dump. We have since demonstrated the feasibility of this approach. We present first results from a full-scale test plasma at power levels relevant to the generation of at least 200W, showing both that the argon cusp plasma is very stable, and that its geometrical properties are ideal for the transport of exhaust power and tin to the beam dump.

Paper Details

Date Published: 19 March 2015
PDF: 6 pages
Proc. SPIE 9422, Extreme Ultraviolet (EUV) Lithography VI, 942228 (19 March 2015); doi: 10.1117/12.2085925
Show Author Affiliations
Malcolm W. McGeoch, PLEX LLC (United States)


Published in SPIE Proceedings Vol. 9422:
Extreme Ultraviolet (EUV) Lithography VI
Obert R. Wood; Eric M. Panning, Editor(s)

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