Dr. Hervé Leplan Profile

Dr. Hervé Leplan

at Safran Reosc

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 26 August 2024 Poster + Paper

Surface error correction of ELT primary mirror hexagonal segments by ion figuring

Xavier Tonnellier, Martin Violot, Gilles Chaussat, Yohan Drouhot, Camille Frapolli, Marc Gouedard, Hervé Leplan, André Rinchet

Proceedings Volume 13100, 131003W (2024) https://doi.org/10.1117/12.3020293

KEYWORDS: Optical surfaces, Ion beam finishing, Mirrors, Mirror surfaces, Polishing, Surface finishing, Optical components, Manufacturing, Optics manufacturing, Segmented mirrors

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Proceedings Article | 20 August 2020 Paper

Precision space freeform optics for Microcarb: final report

R. Geyl, E. Ruch, H. Leplan, F. Riguet, S. Lopez

Proceedings Volume 11487, 114870X (2020) https://doi.org/10.1117/12.2571234

KEYWORDS: Polishing, Optics manufacturing, Freeform optics, Silicon carbide, Mirrors, Spectroscopy, Optical components, Aspheric lenses

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Proceedings Article | 12 July 2019 Open Access

Progress in thin film coating on space IR detectors

L. Macé, E. Oubensaid, F. Pradal, R. Lhuillier, H. Leplan, O. Gauthier-Lafaye, A. Monmayrant

Proceedings Volume 11180, 111803G (2019) https://doi.org/10.1117/12.2536043

KEYWORDS: Optical filters, Coating, Sensors, Multilayers, Infrared sensors, Antireflective coatings, Etching, Optical lithography, Infrared detectors, Thin film coatings

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Proceedings Article | 12 July 2019 Open Access

Freeform optics design, fabrication and testing technologies for Space applications

Roland Geyl, Eric Ruch, Remi Bourgois, Renaud Mercier-Ythier, Hervé Leplan, Francois Riguet

Proceedings Volume 11180, 111800P (2019) https://doi.org/10.1117/12.2535944

KEYWORDS: Freeform optics, Silicon carbide, Polishing, Optics manufacturing, Mirrors, Telescopes, Robotics, Aerospace engineering, Aspheric lenses, Chemical vapor deposition

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Proceedings Article | 15 June 2018 Paper

Pushing SiC polishing technology for advanced applications

R. Geyl, H. Leplan, G. Chaussat

Proceedings Volume 10692, 106920X (2018) https://doi.org/10.1117/12.2314452

KEYWORDS: Silicon carbide, Polishing, Mirrors, Freeform optics, Optical components, Surface finishing, Ion beam finishing

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Proceedings Article | 15 June 2018 Paper

Freeform optics design and manufacturing for MicroCarb

R. Geyl, E. Ruch, H. Leplan, F. Riguet, S. Lopez

Proceedings Volume 10692, 106920A (2018) https://doi.org/10.1117/12.2313243

KEYWORDS: Freeform optics, Optics manufacturing, Polishing, Silicon carbide, Spectroscopy, Mirrors, Aspheric lenses, Space telescopes, Optical components

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Proceedings Article | 20 November 2017 Open Access

NIRSpec optics development: final report

R. Geyl, E. Ruch, H. Vayssade, H. Leplan, J. Rodolfo

Proceedings Volume 10565, 105652D (2017) https://doi.org/10.1117/12.2309146

KEYWORDS: Mirrors, Polishing, Silicon carbide, Astronomical imaging, Optics manufacturing, Coating, Content addressable memory, Reflectivity, Bidirectional reflectance transmission function, Space telescopes

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Proceedings Article | 20 November 2017 Open Access

TMA optics for HISUI HSS and MSS imagers

J. Rodolfo, R. Geyl, H. Leplan, E. Ruch

Proceedings Volume 10564, 105640S (2017) https://doi.org/10.1117/12.2309096

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Proceedings Article | 17 November 2017 Open Access

SIC mirrors polishing

J. Rodolfo, E. Ruch, M. Tarreau, J.-M. Merceron, J. Ferré, N. Rousselet, H. Leplan, R. Geyl, B. Harnisch

Proceedings Volume 10563, 105631Z (2017) https://doi.org/10.1117/12.2304197

KEYWORDS: Polishing, Mirrors, Silicon carbide, Coating, Surface finishing, Space mirrors, Manufacturing, Chemical vapor deposition, Astronomical imaging, Prototyping

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Proceedings Article | 25 September 2017 Open Access

Advanced space optics development in freeform optics design, ceramic polishing, rapid and extreme freeform polishing

R. Geyl, H. Leplan, E. Ruch

Proceedings Volume 10562, 105623S (2017) https://doi.org/10.1117/12.2296212

KEYWORDS: Polishing, Freeform optics, Optics manufacturing, Astronomical imaging, Silicon carbide, Mirrors, Aspheric lenses, Optical design, Chemical vapor deposition, Space telescopes

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Proceedings Article | 25 September 2017 Open Access

Pixelated coatings and advanced IR coatings

Fabien Pradal, Benjamin Portier, Meihdi Oussalah, Hervé Leplan

Proceedings Volume 10562, 105621I (2017) https://doi.org/10.1117/12.2296229

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Proceedings Article | 22 July 2016 Paper

Advanced optical coatings for astronomical instrumentation

Fabien Pradal, Hervé Leplan, Hervé Vayssade, Roland Geyl

Proceedings Volume 9912, 99122I (2016) https://doi.org/10.1117/12.2234455

KEYWORDS: Thin film coatings, Optical filters, Optical coatings, Cryogenics, Near infrared, Temperature metrology, Astronomy, Manufacturing, Multilayers, Optical filtering

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Proceedings Article | 17 September 2012 Paper

Manufacturing optics of a 2.5m telescope

F. Poutriquet, P. Plainchamp, J. Billet, B. Pernet, T. Lagrange, C. Cavadore, JL Carel, H. Leplan, E. Ruch, R. Geyl, JC Jouve

Proceedings Volume 8444, 84441W (2012) https://doi.org/10.1117/12.926106

KEYWORDS: Mirrors, Telescopes, Optics manufacturing, Manufacturing, Coating, Polishing, Design for manufacturability, Optical design, Optical instrument design, Observatories

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Proceedings Article | 13 September 2012 Paper

Prototype segments polishing and testing for ELT M1

Jacques Rodolfo, Laurent Chouarche, Gilles Chaussat, Anne-Laure Hamy, Jean-Louis Carel, Bruno Pernet, Jacques Billet, Hervé Leplan, Eric Ruch

Proceedings Volume 8450, 845023 (2012) https://doi.org/10.1117/12.925417

KEYWORDS: Polishing, Mirrors, Prototyping, Manufacturing, Surface finishing, Ion beam finishing, Spatial frequencies, Monochromatic aberrations, Optics manufacturing, Spherical lenses

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Proceedings Article | 13 September 2012 Paper

Manufacturing of glassy thin shell for adaptive optics: results achieved

F. Poutriquet, A. Rinchet, J.-L. Carel, H. Leplan, E. Ruch, R. Geyl, G. Marque

Proceedings Volume 8447, 84472H (2012) https://doi.org/10.1117/12.925344

KEYWORDS: Mirrors, Optics manufacturing, Manufacturing, Polishing, Prototyping, Adaptive optics, Deformable mirrors, Large telescopes, Spherical lenses, Advanced distributed simulations

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Proceedings Article | 3 October 2011 Paper

TMA optics for HISUI HSS and MSS imagers

R. Geyl, H. Leplan, J. Rodolfo

Proceedings Volume 8169, 816905 (2011) https://doi.org/10.1117/12.902236

KEYWORDS: Mirrors, Polishing, Sensors, Silicon carbide, Zerodur, Optical alignment, Off axis mirrors, Optics manufacturing, Imaging systems, Precision optics

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Proceedings Article | 15 September 2011 Paper

NIRSpec optics development: the final report

R. Geyl, E. Ruch, H. Vayssade, H. Leplan, J. Rodolfo

Proceedings Volume 8146, 81460B (2011) https://doi.org/10.1117/12.894430

KEYWORDS: Mirrors, Polishing, Silicon carbide, James Webb Space Telescope, Coating, Space telescopes, Optics manufacturing, Reflectivity, Content addressable memory, Off axis mirrors

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Proceedings Article | 9 April 2002 Paper

Laser megajoule 1.06-um mirror production with very high laser damage threshold

B. Pinot, Herve Leplan, Francois Houbre, Eric Lavastre, Jean-Christophe Poncetta, Genevieve Chabassier

Proceedings Volume 4679, (2002) https://doi.org/10.1117/12.461687

KEYWORDS: Mirrors, Laser damage threshold, Laser induced damage, Hafnium, Optical coatings, Wavefronts, Photometry, Reflectivity, Interferometers, Metals

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Proceedings Article | 7 September 1999 Paper

Generation of defects with diamond and silica particles inside high-reflection coatings: influence on the laser damage threshold

Marc Poulingue, Jean DiJon, B. Rafin, Herve Leplan, Michel Ignat

Proceedings Volume 3738, (1999) https://doi.org/10.1117/12.360096

KEYWORDS: Mirrors, Silica, Diamond, Rhodium, Particles, Laser damage threshold, Scanning electron microscopy, Laser induced damage, Laser irradiation, High reflection coatings

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Proceedings Article | 7 April 1999 Paper

Laser megajoule optical components damage threshold measurements with a large-size beamlet laser (Abstract Only)

Anne Fornier, Philippe Feru, B. Pinot, Herve Leplan, G. Leroux, Scott Burkhart, Timothy Weiland

Proceedings Volume 3578, (1999) https://doi.org/10.1117/12.344454

KEYWORDS: Mirrors, Optical components, Laser damage threshold, Laser optics, Coating, Polarizers, Laser welding, Optical testing, Hybrid fiber optics

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Proceedings Article | 7 April 1999 Paper

New approach for the critical size of nodular defects: the mechanical connection

Marc Poulingue, Jean Dijon, Michel Ignat, Herve Leplan, B. Pinot

Proceedings Volume 3578, (1999) https://doi.org/10.1117/12.344397

KEYWORDS: Mirrors, Particles, Scanning electron microscopy, Diamond, Laser irradiation, Laser damage threshold, Laser induced damage, Photomicroscopy, Rhodium, Thin films

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Proceedings Article | 20 April 1998 Paper

Toward the real threshold of the megajoule laser components

Anne Fornier, C. Cordillot, D. Bernardino, B. Pinot, Bernard Geenen, Herve Leplan, W. Alexandre

Proceedings Volume 3244, (1998) https://doi.org/10.1117/12.307002

KEYWORDS: Laser damage threshold, Laser components, Laser welding, Laser induced damage, Gaussian beams, Nd:YAG lasers, Optical testing

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Proceedings Article | 8 December 1997 Paper

New 1.053-um coating developments for the Megajoule laser: reduction of defect density on large optics

Odile Lam, Andre Roussel, Anne Fornier, Bernard Geenen, Herve Leplan, B. Pinot, W. Alexandre, P. Pally

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294281

KEYWORDS: Mirrors, Coating, Laser damage threshold, Interferometers, Laser induced damage, Liquids, Polarizers, Spatial filters, Electron transport, Absorption

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Proceedings Article | 8 December 1997 Paper

Characterization of HR coatings for the Megajoule laser transport mirrors

Anne Fornier, C. Cordillot, D. Bernardino, O. Lam, Andre Roussel, B. Pinot, Bernard Geenen, Herve Leplan, W. Alexandre

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294292

KEYWORDS: Mirrors, Laser damage threshold, Contamination, Scattering, Particles, Microscopes, Laser induced damage, Atomic force microscopy, Polarization, Shape analysis

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Proceedings Article | 13 May 1997 Paper

Characterization of HR coatings for the megajoule laser transport mirrors

Anne Fornier, C. Cordillot, D. Bernardino, Odile Lam, Andre Roussel, B. Pinot, Bernard Geenen, Herve Leplan, W. Alexandre

Proceedings Volume 2966, (1997) https://doi.org/10.1117/12.274240

KEYWORDS: Mirrors, Laser damage threshold, Absorption, Atomic force microscopy, Scattering, Shape analysis, Ion beams, Laser induced damage, Scatter measurement, Silicon

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Proceedings Article | 19 August 1996 Paper

Residual stress, composition, and optical properties of SiOxNy thin films deposited by dual ion beam sputtering

Jean-Yves Robic, Herve Leplan, M. Berger, Patrick Chaton, Etienne Quesnel, Oliver Lartigue, Catherine Pelle, Y. Pauleau, F. Pierre

Proceedings Volume 2776, (1996) https://doi.org/10.1117/12.246826

KEYWORDS: Silicon, Silicon films, Oxygen, Nitrogen, Refractive index, Sputter deposition, Ions, Optical properties, Thin films, Ion beams

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Proceedings Article | 19 August 1996 Paper

Polarizers at 1.053 um deposited on silica substrate for high laser flux applications in a vacuum

Bernard Geenen, Herve Leplan, B. Pinot, W. Alexandre, P. Pally, Larry Roussel, Odile Lam

Proceedings Volume 2776, (1996) https://doi.org/10.1117/12.246815

KEYWORDS: Polarizers, Silica, Resistance, Laser damage threshold, Thin films, Oxygen, Laser applications, Laser induced damage, Thin film deposition, National Ignition Facility

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Proceedings Article | 4 November 1994 Paper

Residual stresses in silicon dioxide thin films prepared by reactive electron beam evaporation

Herve Leplan, Bernard Geenen, Jean-Yves Robic, Y. Pauleau

Proceedings Volume 2253, (1994) https://doi.org/10.1117/12.192068

KEYWORDS: Silicon, Refractive index, Oxygen, Water, Silicon films, Annealing, Molecules, Silica, Absorption, Oxidation

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Showing 5 of 28 publications

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