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Duarte, F J; Costela, Á.; García‐Moreno, I.; Sastre, R.; Ehrlich, J.; Taylor, Travis S.

doi:10.1023/a:1018551432627

Cited by 42 publications

(18 citation statements)

References 7 publications

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“…A more important source of distortions could be the thermal lensing effect experienced at the solid-state gain media under our hard excitation regime. 32 From the data reported in Table I it is clear that both the proportion and the nature of the cross-linking monomer play an important role in the effectiveness of laser operation. With the exception of the monomer EGDMA, the increase of the rigidity of the polymeric matrix by cross-linking improves the lasing efficiency with respect to that exhibited by the PM567 embedded in the linear PMMA.…”

Section: Resultsmentioning

confidence: 99%

Laser performance of pyrromethene 567 dye in solid polymeric matrices with different cross-linking degrees

Costela

García‐Moreno

Gómez

et al. 2001

Journal of Applied Physics

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We report on the laser action of pyrromethene 567 ͑PM567͒ incorporated into copolymers of methyl methacrylate ͑MMA͒ with different methacrylic and acrylic cross-linking monomers: ethyleneglycol dimethacrylate, trimethylolpropane trimethacrylate, tetraethyleneglycol diacrylate, pentaerythritol triacrylate, and pentaerythritol tetraacrylate ͑PETRA͒. The vol/vol proportion of the different co-monomers in each copolymer formulation was systematically varied, and the effect of each composition on the lasing properties of PM567 was evaluated. The laser samples were transversely pumped at 534 nm with 5.5 mJ/pulse from a frequency doubled Q-switched Nd:KGW laser. Lasing efficiencies of up 26% and good stability with a drop of the initial laser output of 30% after 100 000 pump pulses at 5 Hz in P͑MMA:PETRA 95:5͒ were demonstrated.

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Section: Resultsmentioning

confidence: 99%

Laser performance of pyrromethene 567 dye in solid polymeric matrices with different cross-linking degrees

Costela

García‐Moreno

Gómez

et al. 2001

Journal of Applied Physics

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“…[7][8][9] During the past twenty years, optical studies performed on organic-inorganic nanocomposites have evolved towards different objectives: investigating the fundamental spectroscopy of lanthanide ions in the sol-gel environment, study of energy transfer between lanthanide ions and chelates (or dyes) in solid matrices, using luminescent molecules as probes for sol-gel processing, and finally developing materials with specific optical properties based on the properties of organic or inorganic chromophores. [10][11][12][13][14][15][16][17] But in the past years, research of these luminescent materials has also been focused on bioanalytical and bio-medical applications. In this review, the different synthetic strategies to prepare lanthanide-doped hybrid materials, as well as some basic considerations involving the efficiency and sensitization of lanthanide luminescence, are discussed.…”

Section: Clément Sanchez Is Director Ofmentioning

confidence: 99%

Photonic and nanobiophotonic properties of luminescent lanthanide-doped hybrid organic–inorganic materials

et al. 2008

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Research into lanthanide-doped organic-inorganic hybrid materials emerged in the 1990s with the development of interesting materials for optics: high efficiency and stable solid-state lasers, new fiber amplifiers and sensors, devices with upconversion, fast photochromic and non-linear responses, etc. Their interest relies on the possibility of combining properties of sol-gel host materials (shaping, tunable refractive index and mechanical properties, corrosion protection, specific adhesion, etc.) and the well-known luminescence of lanthanide ions (Ln). The fast development of photonic hybrids allowed the commercial exploitation of products with new or enhanced characteristics (megajoule pulsed Nd-YAG laser, protective coatings of glasses, screens or glasswares). However, recently, Ln-hybrid nanocomposites have found new applications in bio-sensors, bio-analytics and even clinical imaging diagnostics. These applications make use of the fluorescence properties of lanthanides that make luminescent hybrids ideal candidates for time-resolved fluoroimmunoassays, DNA hybridation assays, fluorescence imaging microscopy, or in vivo imaging. As a consequence, the goal of this review is twofold: (i) as a reminder of some general considerations that must be taken into account to design new optically active Ln-doped nanocomposites whatever the application field, and (ii) to show the most important advances achieved in the past years in different areas, paying special attention to bio-medical applications.

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“…Dye oscillators and amplifiers operate under intense optical excitation which results in significant population build up in the lowest excited singlet S1. Absorption from S1 can produce a number of deleterious effects such as reduction of effective gain, interference with optical pumping, and introduction of an extra thermal load due to the energy released as heat in the subsequent relaxation back to S1, as well as photochemical reaction, Thus knowledge of the spectral properties of the spectral properties of S1 state would be necessary to design efficient dye lasers and to determine optimum pumping conditions [2][3][4][5][6][7][8][9] .…”

Section: Introductionmentioning

confidence: 99%

The Spectroscopic Behaviour of Rhodamine 6G in Liquid and Solid Solutions

Journal¹

2008

Baghdad Sci.J

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Absorption, fluorescence, quantum yield and lifetime of rhodamine 6G in chloroform, methanol and dimethyl sulfoxide were measured. From a comparison of these quantities, with those for solid solutions (solid solutions are obtained by mixing constant volume proportions of dye at a concentration of 1*10-4M/l with different volume proportions from the concentrated solution of polymer in chloroform and dimethyl sulfoxide). The results showed that the addition of polymer to liquid concentrated solutions (1*10-4M/l )of rhodamine 6G dye from expecting [which leading to development active medium for laser dye at high concentration] increase the spectra shift toward high energies, and the luminescence quantum yield but decreasing radiative lifetime.

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Cited by 42 publications

References 7 publications

Laser performance of pyrromethene 567 dye in solid polymeric matrices with different cross-linking degrees

Laser performance of pyrromethene 567 dye in solid polymeric matrices with different cross-linking degrees

Photonic and nanobiophotonic properties of luminescent lanthanide-doped hybrid organic–inorganic materials

The Spectroscopic Behaviour of Rhodamine 6G in Liquid and Solid Solutions

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