Highly photostable laser solution and solid-state media based on mixed pyrromethene and coumarin

Mohammad Ahmad, Terence A. King, Do Kyeong Ko, Byung Heon Cha, Jongmin Lee

Research output: Contribution to journalArticle

33 Citations (Scopus)


A substantial increase in the photostability of pyrromethene 567 laser dye solutions and in solid polymer media has been achieved by the addition of coumarin C540 laser dye. Up to five times increase in photostability of pyrromethene 567 in solid and two times in solution has been observed. The enhanced photostability is attributed to reduction in the effectiveness of in situ oxygen degradation of pyrromethene by the addition of the coumarin.

Original languageEnglish
Pages (from-to)445-448
Number of pages4
JournalOptics and Laser Technology
Issue number6
Publication statusPublished - Sep 1 2002



  • Coumarin
  • Dye laser
  • Liquid
  • Photostability and triplet states
  • Polymer
  • Pyrromethene
  • Solid

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

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