Three-photon induced ultraviolet emissions from polymers

Leiming Li, Wanghua Xiang, Samuel I Stupp

Research output: Contribution to journalArticle


Plasmas were produced from polymers like polystyrene when excited in air or nitrogen by a Nd: YAG 1064 nm intense pulsed laser, and the dominant emission peaks were in the ultraviolet ranging from about 384 to 389 nm, emitted from CN radicals in the plasmas. The intensity of these ultraviolet emission peaks was found to change approximately with the cube of the pumping laser power, suggesting a three-photon induced emission process.

Original languageEnglish
Pages (from-to)451-453
Number of pages3
JournalJournal of Physics D: Applied Physics
Issue number5
Publication statusPublished - Mar 7 2002


ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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