Dr. Marie-Françoise Ravet-Krill Profile

Dr. Marie-Françoise Ravet-Krill

Research Engineer

SPIE Involvement:

Author

Publications (17)

Proceedings Article | 3 April 2008 Paper

Paper

EUV near normal incidence collector development at SAGEM

R. Mercier Ythier, X. Bozec, R. Geyl, A. Rinchet, Christophe Hecquet, Marie-Françoise Ravet-Krill, Franck Delmotte, Benoît Sassolas, Raffaele Flaminio, Jean-Marie Mackowski, Christophe Michel, Jean-Luc Montorio, Nazario Morgado, Laurent Pinard, Elodie Roméo

Proceedings Volume 6921, 692135 (2008) https://doi.org/10.1117/12.787620

KEYWORDS: Reflectivity, Mirrors, Coating, Extreme ultraviolet, Plasma, Manufacturing, Polishing, Annealing, Grazing incidence, Silicon carbide

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Proceedings Article | 3 October 2007 Paper

Paper

HECOR: a HElium CORonagraphy aboard the Herschel sounding rocket

Frédéric Auchère, Marie-Françoise Ravet-Krill, John Moses, Frédéric Rouesnel, Jean-Pierre Moalic, Denis Barbet, Christophe Hecquet, Arnaud Jérome, Raymond Mercier, Jean-Christophe Leclec'h, Franck Delmotte, Jeffrey Newmark

Proceedings Volume 6689, 66890A (2007) https://doi.org/10.1117/12.751447

KEYWORDS: Coronagraphy, Reflectivity, Mirrors, Multilayers, Coating, Extreme ultraviolet, Helium, Solar processes, Rockets, Stray light

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Proceedings Article | 20 September 2007 Paper

Paper

SWAP: a novel EUV telescope for space weather

Jean-Marc Defise, Jean-Philippe Halain, David Berghmans, François Denis, Emmanuel Mazy, Tanguy Thibert, Jean-Hervé Lecat, Pierre Rochus, Bogdan Nicula, Anik De Groof, Jean-François Hochedez, Udo Schühle, Marie-Françoise Ravet, Frank Delmotte

Proceedings Volume 6689, 66890S (2007) https://doi.org/10.1117/12.731784

KEYWORDS: Extreme ultraviolet, Mirrors, Space telescopes, Sensors, Telescopes, Electronics, Space operations, Thermal modeling, Multilayers, Sun

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Proceedings Article | 20 September 2007 Paper

Paper

XUV optics for attosecond applications

J. Gautier, A. S. Morlens, P. Zeitoun, G. Rey, C. Valentin, E. Papalarazou, J. P. Goddet, S. Sebban, F. Delmotte, M. F. Ravet, F. Bridou

Proceedings Volume 6705, 67050C (2007) https://doi.org/10.1117/12.732424

KEYWORDS: Mirrors, Reflectivity, Holography, Holograms, Multilayers, Silicon, Extreme ultraviolet, Microscopy, Digital holography, X-rays

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Proceedings Article | 18 May 2007 Paper

Paper

Design, conception, and metrology of EUV mirrors for aggressive environments

Christophe Hecquet, Marie-Françoise Ravet-Krill, Franck Delmotte, Arnaud Jérôme, Aurélie Hardouin, Françoise Bridou, Françoise Varnière, Marc Roulliay, Frédéric Bourcier, Jean-Michel Desmarres, Vincent Costes, Jacques Berthon, André Rinchet, Roland Geyl

Proceedings Volume 6586, 65860X (2007) https://doi.org/10.1117/12.723483

KEYWORDS: Reflectivity, Extreme ultraviolet, Multilayers, Extreme ultraviolet lithography, Humidity, Annealing, Reflectometry, Silicon carbide, Silicon, Space operations

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The development of new high power EUV sources and EUV space imaging requires optics having specific properties which depend on applications and operating conditions. These both applications are very different in the working multilayers environment. For the high power sources, multilayers are submitted to short pulses with high energy peak whereas, for the space imaging, multilayers are submitted to continuous flux with low level. Moreover photon energy and environment for both applications may be different. The environment may affect structure and top layer contamination when optics are stored, handled, mounted on the final device and finally operating. Main environmental parameters investigated are temperature and humidity variation. One objective is the optimisation of multilayer coatings to offer the highest resistance under photonic, ionic fluxes and temperature cycle. This means that interfacial diffusion between thin layers and degradation of the capping layers have to be avoided or reduced. The present study relies with designing, depositing and testing different structures of multilayer coatings in order to minimise the influence of the environment. Multilayer coatings based on molybdenum, silicon and silicon carbide materials have been deposited by magnetron sputtering on silicon and zerodur substrates. Samples were submitted to radiations emitted by an EUV source at wavelength closed to 13.5 nm. Furthermore they were also submitted to thermal cycles and annealing under warm humidity in the aim to simulate extremes storage or handling conditions as space mission's conditions. The damages and the performance of the multilayers were evaluated by using grazing incidence reflectometry at 0.154 nm and EUV reflectometry at the operating wavelength. After a presentation of the multilayer design, deposition and metrology tools, we will describe the different environmental effects on the coatings to take in care during EUV source exposure, handling and storage conditions. First results on multilayers performances to EUV source exposure and space specification tests are presented. Main damages studies were on annealing, thermal cycling and warm humidity.

Proceedings Article | 5 October 2005 Paper

Paper

B4C/Mo/Si multilayers for 20–40 nm wavelengths: application to broadband mirrors

Franck Delmotte, Julien Gautier, Marc Roulliay, Marie Francoise Ravet, Francoise Bridou, Arnaud Jerome

Proceedings Volume 5963, 59631V (2005) https://doi.org/10.1117/12.625031

KEYWORDS: Reflectivity, Mirrors, Multilayers, Silicon, Molybdenum, Sputter deposition, Calibration, Superposition, Extreme ultraviolet, Ion beams

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Proceedings Article | 5 October 2005 Paper

Paper

Performances and stability of Sc/Si multilayers with barrier layers for wavelengths around 46 nm

Julien Gautier, Franck Delmotte, Marc Roulliay, Marie-Francoise Ravet, Francoise Bridou, Arnaud Jerome, Angelo Giglia, Stefano Nannarone

Proceedings Volume 5963, 59630X (2005) https://doi.org/10.1117/12.625030

KEYWORDS: Reflectivity, Annealing, Multilayers, Reflectometry, Silicon, Sputter deposition, Argon, X-rays, Extreme ultraviolet, Scandium

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Proceedings Article | 5 October 2005 Paper

Paper

X-UV chirped mirror fabrication for phase control of attosecond pulses

Anne-Sophie Morlens, Marie-Françoise Ravet, Vincent Laude, Rodrigo López-Martens, Marc Roulliay, Arnaud Jérome, Franck Delmotte, Françoise Bridou, Sophie Kazamias, Philippe Balcou, Philippe Zeitoun

Proceedings Volume 5963, 59630W (2005) https://doi.org/10.1117/12.625097

KEYWORDS: Mirrors, Reflectivity, Silicon, Molybdenum, Multilayers, Extreme ultraviolet, Calibration, Reflectometry, Neon, Control systems

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Proceedings Article | 15 September 2005 Paper

Paper

Innovative designs for the imaging suite on Solar Orbiter

Frederic Auchere, Xueyen Song, Frederic Rouesnel, Thierry Appourchaux, Jean-Jacques Fourmon, Jean-Christophe Le Clec'h, Michel Berthe, Jean-Marc Defise, Emmanuel Mazy, Pierre Rochus, Raymond Mercier, Marie-Francoise Ravet

Proceedings Volume 5901, 590115 (2005) https://doi.org/10.1117/12.620863

KEYWORDS: Sun, Mirrors, Telescopes, Imaging systems, Image resolution, Extreme ultraviolet, Sensors, Space operations, Coronagraphy, Space telescopes

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Proceedings Article | 25 February 2004 Paper

Paper

Ion-beam-deposited Mo/Si multilayers for EUV imaging applications in astrophysics

Marie-Francoise Ravet, Francoise Bridou, Xueyan Zhang-Song, Arnaud Jerome, Franck Delmotte, Raymond Mercier, Marie Bougnet, Philippe Bouyries, Jean-Pierre Delaboudiniere

Proceedings Volume 5250, (2004) https://doi.org/10.1117/12.514597

KEYWORDS: Reflectivity, Multilayers, Telescopes, Mirrors, Calibration, Extreme ultraviolet, Reflectometry, Ion beams, Silicon, Reflector telescopes

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Proceedings Article | 18 February 2004 Paper

Paper

MAGRITTE optomechanical design and mirror manufacturing

Emmanuel Mazy, Jean-Marc Defise, Jean-Philippe Halain, Pierre Rochus, Laurence Rossi, Raymond Mercier, Marie-Francoise Ravet, Franck Delmotte, Mourad Idir

Proceedings Volume 5249, (2004) https://doi.org/10.1117/12.513998

KEYWORDS: Mirrors, Extreme ultraviolet, Telescopes, Optical benches, Coating, Space telescopes, Space operations, Optical filters, Multilayers, Solar processes

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Proceedings Article | 4 February 2004 Paper

Paper

MAGRITTE: an instrument suite for the solar atmospheric imaging assembly (AIA) aboard the Solar Dynamics Observatory

Pierre Rochus, Jean-Marc Defise, Jean-Philippe Halain, Claude Jamar, Emmanuel Mazy, Laurence Rossi, Tanguy Thibert, Frederic Clette, Pierre Cugnon, David Berghmans, Jean-Francois Hochedez, Jean-Pierre Delaboudiniere, Frederic Auchere, Raymond Mercier, Marie-Francoise Ravet, Franck Delmotte, Mourad Idir, Udo Schuehle, Volker Bothmer, Silvano Fineschi, Russell Howard, John Moses, Jeffrey Newmark

Proceedings Volume 5171, (2004) https://doi.org/10.1117/12.503964

KEYWORDS: Extreme ultraviolet, Telescopes, Solar processes, Mirrors, Iron, Optical filters, Observatories, Space telescopes, Optical benches, Aluminum

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Proceedings Article | 4 February 2004 Paper

Paper

EUVI: the STEREO-SECCHI extreme ultraviolet imager

Jean-Pierre Wuelser, James Lemen, Theodore Tarbell, C. Wolfson, Joseph Cannon, Brock Carpenter, Dexter Duncan, Glenn Gradwohl, Syndie Meyer, Augustus Moore, Rosemarie Navarro, J. Pearson, George Rossi, Larry Springer, Russell Howard, John Moses, Jeffrey Newmark, Jean-Pierre Delaboudiniere, Guy Artzner, Frederic Auchere, Marie Bougnet, Philippe Bouyries, Francoise Bridou, Jean-Yves Clotaire, Gerard Colas, Franck Delmotte, Arnaud Jerome, Michel Lamare, Raymond Mercier, Michel Mullot, Marie-Francoise Ravet, Xueyan Song, Volker Bothmer, Werner Deutsch

Proceedings Volume 5171, (2004) https://doi.org/10.1117/12.506877

KEYWORDS: Mirrors, Telescopes, Space telescopes, Extreme ultraviolet, Charge-coupled devices, Optical filters, Calibration, Coating, Observatories, Sensors

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Proceedings Article | 19 December 2003 Paper

Paper

New techniques for the measurement of x-ray beam or x-ray optics quality

Philippe Zeitoun, Philippe Balcou, Samuel Bucourt, Djamel Benredjem, Franck Delmotte, Guillaume Dovillaire, Denis Douillet, James Dunn, G. Faivre, Marta Fajardo, Kenneth Goldberg, Mourad Idir, Sebastien Hubert, Jim Hunter, Sylvie Jacquemot, Sophie Kazamias, Sebastien le Pape, Xavier Levecq, Ciaran Lewis, Remy Marmoret, Pascal Mercere, A. Morlens, Patrick Naulleau, Christian Remond, Jorge Rocca, Stephane Sebban, Raymond Smith, Marie-Francoise Ravet, Philippe Troussel, Constance Valentin, Laurent Vanbostal

Proceedings Volume 5197, (2003) https://doi.org/10.1117/12.508183

KEYWORDS: Wavefronts, X-ray lasers, Wavefront sensors, Extreme ultraviolet, Plasma, Mirrors, Interferometers, Picosecond phenomena, Michelson interferometers, X-ray optics

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Proceedings Article | 19 December 2003 Paper

Paper

Coherence measurements of a transient 14.7-nm x-ray laser

James Dunn, Raymond Smith, Sebastian Hubert, Marta Fajardo, Philippe Zeitoun, James Hunter, Christian Remond, Laurent Vanbostal, Sylvie Jacquemot, Joseph Nilsen, Ciaran Lewis, Remy Marmoret, Vyacheslav Shlyaptsev, Marie-Francoise Ravet, Franck Delmotte

Proceedings Volume 5197, (2003) https://doi.org/10.1117/12.504929

KEYWORDS: X-ray lasers, Picosecond phenomena, Visibility, Interferometers, Ions, Palladium, Plasma, Beam splitters, Michelson interferometers, Mirrors

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Proceedings Article | 11 February 2003 Paper

Paper

Grazing incidence objective grating spectro-imagers for EUV observations of the solar corona

Jean-Pierre Delaboudiniere, Igor Zhitnik, Marie-Francoise Ravet, Didier Lepere

Proceedings Volume 4853, (2003) https://doi.org/10.1117/12.460359

KEYWORDS: Diffraction, Grazing incidence, Sun, Telescopes, Extreme ultraviolet, Sensors, Coronagraphy, Reflectivity, Diffraction gratings, Polarization

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Proceedings Article | 11 February 2003 Paper

Paper

The solar high-resolution imager: coronagraph LYOT mission

Jean-Claude Vial, Xueyan Song, Philippe Lemaire, Alan Gabriel, Jean-Pierre Delaboudiniere, Karine Bocchialini, Serge Koutchmy, Philippe Lamy, Raymond Mercier, Marie Francoise Ravet, Frederic Auchere

Proceedings Volume 4853, (2003) https://doi.org/10.1117/12.460291

KEYWORDS: Coronagraphy, Mirrors, Telescopes, Imaging systems, Solar processes, Sensors, Space telescopes, Spatial resolution, Sun, Curium

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Showing 5 of 17 publications

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