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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 30 — Oct. 20, 1998
  • pp: 7100–7106

Effects of chromophore dissociation on the optical properties of rare-earth-doped polymers

Renyuan Gao, Christopher Koeppen, Guoqi Zheng, and Anthony F. Garito  »View Author Affiliations


Applied Optics, Vol. 37, Issue 30, pp. 7100-7106 (1998)
http://dx.doi.org/10.1364/AO.37.007100


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Abstract

The observed dissociation of tetrakis rare-earth chromophores in rare-earth-doped organic polymers is reported, and a time-resolved spectroscopic technique is presented to determine quantitatively the fractional concentrations of different chromophore species in various solvents. Based on this technique, the equilibrium constants of tetrakis rare-earth chromophores in rare-earth-doped polymers are determined. Thus, the equilibrium constants for tetrakis rare-earth compounds of benzoyltrifluoroacetonate (BTF), for example, Sm(BTF)4P and Eu(BTF)4P in methyl methacrylate monomer, are K = 4.7 ± 0.5 × 10-4 M and K = 1.2 ± 0.5 × 10-4 M, respectively. In contrast, the tetrakis rare-earth compounds of hexafluoroacetylacetonate (HFA), for example, Sm(HFA)4Net4 and Eu(HFA)4Net4, are quite stable and show no evidence of dissociation. We further characterize the dissociation of several chromophore systems and discuss the influence such dissociation has on overall optical performance. The results enable determination of optimal doping concentrations as well as preferred rare-earth chromophore preparation and doped polymer fabrication procedures.

© 1998 Optical Society of America

OCIS Codes
(140.3380) Lasers and laser optics : Laser materials
(140.4480) Lasers and laser optics : Optical amplifiers
(140.5680) Lasers and laser optics : Rare earth and transition metal solid-state lasers
(160.4890) Materials : Organic materials
(160.5470) Materials : Polymers
(160.5690) Materials : Rare-earth-doped materials

History
Original Manuscript: April 13, 1998
Revised Manuscript: July 16, 1998
Published: October 20, 1998

Citation
Renyuan Gao, Christopher Koeppen, Guoqi Zheng, and Anthony F. Garito, "Effects of chromophore dissociation on the optical properties of rare-earth-doped polymers," Appl. Opt. 37, 7100-7106 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-30-7100

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