Singlet oxygen and dye-triplet-state quenching in solid-state dye lasers consisting of Pyrromethene 567–doped poly(methyl methacrylate)

Mohammad Ahmad, Mark D. Rahn, Terence A. King

Research output: Contribution to journalArticlepeer-review

65 Citations (Scopus)

Abstract

Solid-state dye lasers based on poly(methyl methacrylate) (PMMA) doped with Pyrromethene 567 dye (P567) have been investigated. The preparation techniques employed provided high photostability and laser damage threshold for P567 in pure PMMA with 270,000 pulses emitted before the conversion efficiency fell to half its initial value for a pump fluence of 0.16 J cm-2. When PMMA was modified with 1,4-diazobicyclo [2,2,2] octane singlet oxygen quencher, the longevity increased to 550,000 pulses, corresponding to a normalized photostability of 270 GJ mol-1. Modification of PMMA with a triplet quencher (perylene) yielded no improvement, but in ethanol solutions both additives enhanced photostability. It is possible that in PMMA, stabilization by means of triplet quenching that depends on dye diffusion is prevented but that stabilization by means of singlet oxygen quenching that depends on the faster oxygen diffusion rate will succeed.

Original languageEnglish
Pages (from-to)6337-6342
Number of pages6
JournalApplied Optics
Volume38
Issue number30
DOIs
Publication statusPublished - Oct 20 1999

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Engineering (miscellaneous)
  • Electrical and Electronic Engineering

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