Correlation between laser absorption and radiation conversion efficiency in laser produced tin plasma

Hiraku Matsukuma, Atsushi Sunahara, Tatsuya Yanagida, Hiroaki Tomuro, Kouichiro Kouge, Takeshi Kodama, Tatsuya Hosoda, Shinsuke Fujioka, Hiroaki Nishimura

Research output: Contribution to journalArticlepeer-review

9 Citations (Scopus)

Abstract

The correlation between the laser absorption and the conversion efficiency (CE) for 13.5 nm extreme ultraviolet (EUV) light in a laser-produced tin plasma was investigated. The absorption rate α and the CE were measured simultaneously for a laser-pre-formed low-density tin target as a function of the time delay between the pre-pulse and the main laser pulse. A clear and positive correlation between α and CE was found with increasing delay time; however, the CE decreases rapidly at longer delay times. This result is partly attributed to a reduction in the absorption rate, but is mainly attributed to the self-absorption of EUV light in excessively long-scale plasmas.

Original languageEnglish
Article number121103
JournalApplied Physics Letters
Volume107
Issue number12
DOIs
Publication statusPublished - 2015 Sep 21
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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