Fluorescence spectroscopy of color centers generated in phosphate glasses after exposure to femtosecond laser pulses

James W Chan, Thomas R Huser, Joseph S. Hayden, Subhash H. Risbud, Denise M. Krol

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

A confocal fluorescence microscopy setup was used to observe, in situ, spectral changes in phosphate glasses which were modified using 0.3 μJ of tightly focused 800 nm, 130 fs laser pulses. On 488 nm excitation, the modified glass shows a broad fluorescence centered at roughly 600 nm, which decays with prolonged exposure to the 488 nm light. The decay behavior is dependent on the 488 nm power, with a faster decay rate for higher powers. A mechanism whereby color centers, formed by the femtosecond pulses, fluoresce when excited by the 488 nm light and are simultaneously photobleached is proposed to explain the observed behavior.

Original languageEnglish (US)
Pages (from-to)1037-1040
Number of pages4
JournalJournal of the American Ceramic Society
Volume85
Issue number5
StatePublished - May 2002

ASJC Scopus subject areas

  • Ceramics and Composites

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