Characteristics of dye-doped ormosil lasers

Rahn, Mark D.; King, Terence A.; Capozzi, Carol A.; Seddon, Angela B.

doi:10.1117/12.188971

Cited by 18 publications

(6 citation statements)

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“…Much research has already been devoted to solidstate dye lasers, because of their high laser efficiency and their technical and economical advantages. [1][2][3][4][5][6][7][8] Many different materials have been used as a solid host for organic dyes, such as methylmethacrylate based polymers, 2,9 -14 sol-gel glasses, 3,15 polycom glasses, 16,17 hybrid materials, 5,18 -24 and epoxy resins. 22 The key parameters concerning these materials are laser efficiency and photodegradation rate or lifetime.…”

Section: Introductionmentioning

confidence: 99%

Stable doped hybrid sol-gel materials for solid-state dye laser

Nhung¹,

Canva²,

Dao³

et al. 2003

Appl. Opt.

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Laser effects have been obtained with dye-doped hybrid xerogel samples prepared several years ago and stored in different "classical" conditions. Firstly, using the same configuration of the laser cavity as was used 4-5 years ago, we have obtained almost identical laser performances, and slope conversion efficiencies were measured up to 80% and operational lifetimes, with 1-mJ initial output energy and 10-Hz repetition rate of several hundred thousand pulses obtained. Secondly, we have introduced the new pyrromethene 605 dye into a hybrid xerogel matrix and obtained good laser performances similar to the rest of the pyrromethene family.

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Section: Introductionmentioning

confidence: 99%

Stable doped hybrid sol-gel materials for solid-state dye laser

Nhung¹,

Canva²,

Dao³

et al. 2003

Appl. Opt.

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“…The sol−gel process has been of great interest and has been noted as an excellent candidate for the preparation of inorganic−organic composite materials in recent years. − In particular, sol−gel-derived organically modified silicate (ORMOSIL) host materials were found to have the advantage of easy realization of versatility in optical and mechanical properties by employing various kinds of the alkoxides as starting materials and/or optimizing their compositions; moreover, the obtained ORMOSIL materials possess matrix properties which combine both inorganic and organic characters . Thus, many organic dyes, which are susceptible to high-temperature degradation, have been incorporated into sol−gel-derived host materials under mild conditions and various inorganic−organic hybrid materials that have promising optical properties have been prepared, aimed at the development of solid tunable laser devices, − nonlinear optics, and hole-burning materials . Apart from organic dyes, recently lanthanide complexes, such as [Eu(phen) 2 ]Cl 3 and [Tb(bpy) 2 ]Cl 3 , have also been incorporated into the ORMOSIL matrixes according to the sol−gel method. , The obtained ORMOSIL composites have been found to show strong red or green emission and have been applied to amorphous , and crystalline 16 silicon solar cells to enhance their photovoltaic output.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Luminescence Properties of Organically Modified Silicate Composite Phosphors Doped with an Europium(III) β-Diketonate Complex

et al. 1999

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The phenanthroline adduct of the tris(2-thenoyltrifluoroaceto-O,O‘)europium(III) complex, Eu(TTA)3phen, was doped into organically modified silicate (ORMOSIL) matrixes via the sol−gel process, and the luminescence properties of the resultant ORMOSIL composite phosphors (ORMOSIL:Eu(TTA)3phen) were characterized. The emission intensity of the composite phosphors maximized at ∼50% vs the commercially available lamp phosphor Y(P,V)O4:Eu, and transparent ORMOSIL:Eu(TTA)3phen composite phosphor disks (45 mm in diameter by 1.5 mm) were obtained under appropriate complex concentration and matrix composition. Moreover, the emission intensity of the composite phosphors was found to be maintained at the same level even after standing for up to 180 days in air, but lowered after heat treatments (100−300 °C), possibly due to the transformation of the β-diketonate ligand from the photoactive π electron-conjugated enolate to the corresponding nonphotoactive ketone form. In particular, the ORMOSIL:Eu(TTA)3phen composite phosphor powders treated with (CH3)3SiNHSi(CH3)3 (hexamethyldisilazane, HMDS) showed a remarkable increase in emission intensity, owing to the improved water repellency resulting from the implantation of the −OSi(CH3)3 (trimethylsilyl substituent: TMS) in the ORMOSIL composites and the favorable reconversion of the ligand from the nonconjugated β-diketone to the photoactive conjugated enolate form as induced by the NH3 evolved during the TMS modification process. A composite phosphor with high emission intensity (∼70% vs Y(P,V)O4:Eu) was obtained after the modification.

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“…In the case of xerogels, Rahn et al 3 achieved an initial gain of a factor of 4 for deoxygenated Pyrromethene 567-dopedsample lifetimes. We also prepared some oxygen-free samples.…”

Section: Introductionmentioning

confidence: 99%

“…Progress in host matrix processing has led to promising results, mainly with the doped solgel or the doped organic polymer techniques. [1][2][3][4][5] We report a significant advance, more than 1 order of magnitude, toward stable solid-state dye laser emission. High conversion efficiencies were also obtained for these materials, and their synthesis is described.…”

Section: Introductionmentioning

confidence: 99%