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25 results on '"Boisse-Laporte, Caroline"'

3. Design of a microwave microplasma source at atmospheric pressure

Author

Gregorio, Jose, Leroy, Olivier, Leprince, Philippe, Alves, Luis L., and Boisse-Laporte, Caroline

Subjects
Atmospheric pressure -- Research, Plasma (Ionized gases) -- Properties, Microwaves -- Properties, Resonators -- Properties, Resonators -- Usage, Resonators -- Design and construction, Spectrum analysis -- Methods, Spectrum analysis -- Usage, Business, Chemistry, Electronics, Electronics and electrical industries
Abstract

This paper studies two linear resonator sources, which use a continuous 2.45-GHz microwave excitation to produce stable microplasmas, in air and in argon, at atmospheric pressure. The discharges are produced and sustained within the 50-200-[micro]m gap created between two metal electrodes with either 6 or 14 mm in length. Particular attention is given to the design and optimization of the sources (in terms of frequency tuning and power coupling), following a complementary approach based on simulations and experiments. Optical-emission-spectroscopy diagnostics allow one to deduce the rotational, vibrational, and excitation gas temperatures and the electron density (using Stark broadening measurements of the [H.sub.[beta]] line-emission profile). Index Terms--Atmospheric-pressure discharges, linear resonator, microplasma, microwave, optical diagnostics, power coupling.

Published
2009

5. Generation and confinement of gas-plasma in photonic dielectric microstructure

Author

Debord, Benoît, Jamier, Raphaël, Gérôme, Frédéric, Olivier, Leroy, Boisse-Laporte, Caroline, Leprince, Philippe, Alves, L.L., Benabid, Fetah A., Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), Instituto Superior Técnico, Universidade Técnica de Lisboa (IST), Photonique Fibre et Sources Cohérentes (XLIM-PHOT), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
Physics::Plasma Physics, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic
Abstract

International audience; We report on a self-guided microwave surface-wave induced generation of ~60 μm diameter and 6 cm-long column of argon-plasma confined in the core of a hollow-core photonic crystal fiber. At gas pressure of 1 mbar, the micro-confined plasma exhibits a stable transverse profile with a maximum gas-temperature as high as 1300 ± 200 K, and a wall-temperature as low as 500 K, and an electron density level of 1014 cm−3. The fiber guided fluorescence emission presents strong Ar+ spectral lines in the visible and near UV. Theory shows that the observed combination of relatively low wall-temperature and high ionisation rate in this strongly confined configuration is due to an unprecedentedly wide electrostatic space-charge field and the subsequent ion acceleration dominance in the plasma-to-gas power transfer.

Published
2013
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6. Generation of a Microwave Microplasma in an Ar-filled Hollow-Core Photonic Crystal Fiber based on a Microstrip Split- Ring Resonator

Author

Vial, Florian, Gadonna, Katell, Debord, Benoît, Gérôme, Frédéric, Jamier, Raphaël, Leroy, Olivier, Leprince, Philippe, Boisse-Laporte, Caroline, Benabid, Fetah A., PHOTONIQUE (XLIM-PHOTONIQUE), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Gerome, Frédéric

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2013

7. Génération de microplasmas dans des fibres optiques à cœur creux

Author

Debord, Benoît, Jamier, Raphaël, Gérôme, Frédéric, Boisse-Laporte, Caroline, Leprince, Philippe, Leroy, Olivier, Alves, L.L., Blondy, Jean-Marc, Benabid, Fetah A., Gerome, Frédéric, PHOTONIQUE (XLIM-PHOTONIQUE), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), and Instituto Superior Técnico, Universidade Técnica de Lisboa (IST)

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2012

8. Generation of plasmas in 100 μm core diameter capillaries using a microwave excitation based on a surfatron

Author

Leroy, Olivier, Debord, Benoît, Leprince, Philippe, Boisse-Laporte, Caroline, Alves, L.L., Jamier, Raphaël, Gérôme, Frédéric, Benabid, Fetah A., Gerome, Frédéric, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE (XLIM-PHOTONIQUE), XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Instituto de Plasmas e Fusão Nuclear [Lisboa] (IPFN), and Instituto Superior Técnico, Universidade Técnica de Lisboa (IST)

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2012

9. Plasma micro-onde dans des fibres capillaires de 100 μm de diamètre

Author

Leroy, Olivier, Debord, Benoît, Leprince, Philippe, Boisse-Laporte, Caroline, Jamier, Raphaël, Gérôme, Frédéric, Benabid, Fetah A., Gerome, Frédéric, Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), PHOTONIQUE (XLIM-PHOTONIQUE), XLIM (XLIM), and Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)

Subjects
[SPI.OPTI] Engineering Sciences [physics]/Optics / Photonic, [SPI.OPTI]Engineering Sciences [physics]/Optics / Photonic, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2012

10. Source de lumière UV générée par microplasma microonde dans des guides d'onde à cœur creux

Author

Debord, Benoît, Jamier, Raphaël, Gérôme, Frédéric, Boisse-Laporte, Caroline, Leprince, Philippe, Leroy, Olivier, Blondy, Jean-Marc, Benabid, Fetah A., PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS), and Maury, Véronique

Subjects
30èmes Journées Nationales d'Optique Guidée, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2011

11. Creation of a sustained microwave microplasma column in a 100-pm Ar-filled hollow-core waveguide

Author

Debord, Benoît, Jamier, Raphaël, Gérôme, Frédéric, Boisse-Laporte, Caroline, Leprince, Philippe, Leroy, Olivier, Blondy, Jean-Marc, Benabid, Fetah A., Maury, Véronique, PHOTONIQUE, XLIM (XLIM), Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS)-Université de Limoges (UNILIM)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de physique des gaz et des plasmas (LPGP), and Université Paris-Sud - Paris 11 (UP11)-Centre National de la Recherche Scientifique (CNRS)

Subjects
ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2011

12. Plasma photonics in hollow-core photonic crystal fibers

Author

Debord, Benoit, primary, Gerome, Frederic, additional, Jamier, Raphael, additional, Gadonna, Katell, additional, Vial, Florian, additional, Leroy, Olivier, additional, Leprince, Philippe, additional, Boisse-Laporte, Caroline, additional, Alves, Luis, additional, and Benabid, Fetah, additional

Published
2013
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24. Study of the transport of titanium neutrals and ions in the post-discharge of a high power pulsed magnetron sputtering device

Author

de Poucques, Ludovic, Imbert, Jean-Christophe, Boisse-Laporte, Caroline, Bretagne, Jean, Ganciu, Mihai, Teulé-Gay, Lionel, and Touzeau, Michel

Abstract

This paper deals with the diagnostics of a high power pulsed magnetron sputtering device (HPPMS). The HPPMS plasma was spatially and temporally characterized in the post-discharge using optical absorption spectroscopy and Langmuir probe time resolved measurements. A circular titanium target was used, the buffer gas was argon and the pressure was fixed at 4?Pa. The titanium densities (neutrals and ions) were measured by a pulsed resonant absorption spectroscopy technique. We found an ionization degree higher than 0.5. Comparison beetween the experimental results and a simple one-dimensional model of diffusion shows that in these conditions, the transport of neutral and ionized sputtered atoms is mainly controlled by diffusion (ambipolar diffusion for ions).

Published
2006
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25. Spatial characterization of an IPVD reactor: neutral gas temperature and interpretation of optical spectroscopy measurements

Author

de Poucques, Ludovic, Imbert, Jean-Christophe, Boisse-Laporte, Caroline, Vasina, Petr, Bretagne, Jean, Teulé-Gay, Lionel, and Touzeau, Michel

Abstract

This paper deals with the characterization of an ionized physical vapour deposition (IPVD) reactor using an additional microwave plasma. The IPVD reactor was spatially characterized using optical emission spectroscopy, optical absorption spectroscopy and Langmuir probe measurements. A rectangular titanium target was used, the buffer gas was argon and the pressure was fixed at 4?Pa. The influence of the microwave power (between 0 and 900?W) and the magnetron discharge current (0.5 and 2?A) on the densities of the titanium species (neutral and ionic), argon emission line intensity and titanium and argon temperature variations was investigated. The titanium temperature and densities were measured using the pulsed resonant absorption spectroscopy technique. The neutral and ion fluxes on the substrate were deduced from these measurements. It was found that the ratio (Ti+)/(Tin) increases by a factor of 30 when additional microwave plasma is used. Moreover, we point out the temperature as a key parameter in plasma diagnostic interpretations.

Published
2005
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