Enhanced photostability of photoluminescent dye-doped solutions and polymers with the addition of dielectric-oxide micro-particles

Mohammad Ahmad

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

Organic dye molecules in both solid polymethyl methacrylate and in solution have been found to display greatly enhanced photostability with the addition of micro-particles. Micro-particle doped poly(methyl methacrylate) samples and solutions were prepared doped with the laser dye pyrromethene 567 and rhodamine 6G. Study of the composite dye material as a gain medium in a laser provided a controlled and sensitive test of the photostability. The micro-particle doped samples used as the active laser medium demonstrated a doubling in service life to 0.4 million pulses compared with undoped samples before the output intensity was reduced to one-half. Further addition of a singlet oxygen quencher (DABCO) enhanced the photostability to 0.6 million pulses. Possible explanations discussed include cavity QED effects, surface photophysical and photochemical interactions and thermo-mechanical effects. These observations are relevant to photoluminescent devices and in general to the photostability of organic molecules.

Original languageEnglish
Pages (from-to)457-461
Number of pages5
JournalOptics Communications
Volume271
Issue number2
DOIs
Publication statusPublished - Mar 15 2007
Externally publishedYes

Fingerprint

Polymethyl Methacrylate
Polymethyl methacrylates
Oxides
Polymers
Coloring Agents
Dyes
dyes
polymethyl methacrylate
Singlet Oxygen
Molecules
Dye lasers
oxides
Lasers
polymers
Service life
service life
rhodamine
pulses
dye lasers
Oxygen

Keywords

  • Micro-particles
  • Organic
  • Photoluminescence
  • Photostability
  • PMMA
  • Polymers
  • Pyrromethene
  • Rhodamine
  • Solid-state dye laser

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

Cite this

Enhanced photostability of photoluminescent dye-doped solutions and polymers with the addition of dielectric-oxide micro-particles. / Ahmad, Mohammad.

In: Optics Communications, Vol. 271, No. 2, 15.03.2007, p. 457-461.

Research output: Contribution to journalArticle

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