Impregnated SiO2 gels used as dye laser matrix hosts

Canva, Michael; Georges, Patrick; Brun, Alain; Larrue, Denis; Zarzycki, J.

doi:10.1016/s0022-3093(05)80690-8

Cited by 30 publications

(19 citation statements)

References 8 publications

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“…These results are to our knowledge the best ever obtained with doped xerogels for such a pumpingenergy level. They are significantly greater than those we had previously found 11 with Rhodamine 6G and those reported by Altman et al, 12 who used Rhodamine B in the same energy range. In the more general field of solid-state dye lasers these performances are only bettered by the recent results of Allik et al, 13 who used a modified acrylic plastic rod doped with pyrromethene BF2 dye: a useful lifetime of more than 20,000 shots at 3.3 Hz with output energies above 30 mJ was demonstrated.…”

contrasting

confidence: 62%

“…Independently, several research groups have attempted to incorporate these dye molecules into different solid host matrices such as plastics, 3 porous glasses, 4 or solgel matrices. 5 In some of these solid media, lasing action was obtained [6][7][8][9][10][11][12][13][14] after the mechanical requirements necessary for the optical polishing of the material were satisfied. In these cases the optical properties of the organic molecules are retained, and reasonable tunability and slope efficiency have generally been obtained.…”

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confidence: 99%

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Perylene- and pyrromethene-doped xerogel for a pulsed laser

et al. 1995

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Hydrophobic photostable dye molecules such as perylenes or pyrromethenes were trapped in xerogel matrices. Using these new materials as solid-state dye lasers, we have demonstrated efficient laser operation. Slope efficiencies of up to 30% were obtained in the millijoule output-energy range. Tunabilities of up to 60 nm were observed, and more than 150,000 pulses were emitted by the same spot of a given sample when the laser was pumped at millijoule energy levels.

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confidence: 62%

mentioning

confidence: 99%

Perylene- and pyrromethene-doped xerogel for a pulsed laser

et al. 1995

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“…117 In this way, several organic dyes were effectively trapped in the sono-xerogel pores, by adding the optically active phase in the sol step, leading to very stable composites for optical applications. 72,73,122,123 The most promising results were obtained by encapsulating copper phthalocyanine (CuPc). CuPc is a macrocyclic planar molecule with extended p-electron delocalization that gives rise to extremely large molecular secondorder hyperpolarizabilities causing third-order nonlinear optics processes.…”

Section: Organic-doped Sonogelsmentioning

confidence: 99%

“…They found that the lower diffusivity in sonogels, as compared with classic wet gels, enabled fine and uniform precipitates to be obtained. To optimize optical quality, an impregnation treatment using SiO 2 sonosols was developed, 130 reinforcing the matrix mechanical properties by sealing their pores. This allows perfectly smooth surfaces to be obtained after polishing.…”

Section: Semiconductor-doped Sonogelsmentioning

confidence: 99%

Sonogels and derived materials

Blanco¹,

Esquivias²,

Litrán³

et al. 1999

Appl. Organometal. Chem.

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Nowadays the sol–gel process is used by an increasing number of researchers for the preparation of various products, including bulk materials, films, membranes or fibers. The application of ultrasound (sonocatalysis) to the precursors gives rise to materials with new properties, known as sonogels. The absence of additional solvent and, mainly, the effects of ultrasonic cavitation create a unique environment for sol–gel reactions leading to particular features in the resulting gels: high density, fine texture, homogeneous structure etc. These properties determine the evolution of sonogels on further processing and the final material structure. In this sense, the full exploitation of sonocatalysis requires a thorough understanding of the processes involved and their sensitivity to reaction parameters. For this purpose, we have used diverse techniques to investigate the microstructural evolution during different steps in the sonogel process. The results of these studies are reported here. Finally, we present an overview of some applications for which the mechanical, textural and optical characteristics of sonogels are quite useful. Copyright © 1999 John Wiley & Sons, Ltd.

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“…After 38,000 pulses, the output energy was still 62 % of its initial value. This result is one order of magnitude better than those we had previously published using rhodamine doped gels [2]. Figure 3 presents the evolution of the output energy of our solid state dye laser as a function of the number of pump pulses.…”

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confidence: 59%

Agile solid state dye lasers

et al. 1994

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Different organic dye molecules were incorporated in solid gels by the sol gel process with a view to develop tunable solid state laser applications. We studied the laser efficiency of these materials by using a nanosecond frequency doubled Nd:YAG as the pump laser. Slope efficiency up to 30 % with 3 mJ output energy and half energy lifetime of 40,000 shots were thus obtained. This large lifetime was observed with the perylene red molecules despite of a lower slope efficiency (19%). Tunability over 50 nm was obtained with the perylene or pyrromethene dyes and 75 nm in the case of the xanthylium dye

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Impregnated SiO2 gels used as dye laser matrix hosts

Cited by 30 publications

References 8 publications

Perylene- and pyrromethene-doped xerogel for a pulsed laser

Perylene- and pyrromethene-doped xerogel for a pulsed laser

Sonogels and derived materials

Agile solid state dye lasers

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