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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 38, Iss. 30 — Oct. 20, 1999
  • pp: 6337–6342

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, and Terence A. King  »View Author Affiliations


Applied Optics, Vol. 38, Issue 30, pp. 6337-6342 (1999)
http://dx.doi.org/10.1364/AO.38.006337


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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.

© 1999 Optical Society of America

OCIS Codes
(140.2050) Lasers and laser optics : Dye lasers
(140.3380) Lasers and laser optics : Laser materials
(140.3460) Lasers and laser optics : Lasers
(140.3580) Lasers and laser optics : Lasers, solid-state

History
Original Manuscript: May 4, 1999
Revised Manuscript: July 14, 1999
Published: October 20, 1999

Citation
Mohammad Ahmad, Mark D. Rahn, and Terence A. King, "Singlet oxygen and dye-triplet-state quenching in solid-state dye lasers consisting of Pyrromethene 567–doped poly(methyl methacrylate)," Appl. Opt. 38, 6337-6342 (1999)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-38-30-6337

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