Dr. Lucie Leboulleux Profile

Dr. Lucie Leboulleux

Postdoc at Institut de Planétologie et d’Astrophysique de Grenobles

SPIE Involvement:

Author

Publications (32)

Proceedings Article | 6 October 2023 Poster

Poster

Harvesting lost photons in stellar coronagraphs

Lisa Altinier, Yann Gutierrez, Olivier Absil, Alexis Carlotti, Olivier Herscovici-Schiller, Lucie Leboulleux, Emiel Por, Pierre Baudoz, Alexis Bidot, Kimberly Bott, Bernhard Brandl, Sarah Casewell, Élodie Choquet, Nicolas Cowan, Niyati Desai, David Doelman, Jules Fowler, Timothy Gebhard, Sebastiaan Haffert, Adrien Hours, Roser Juanola-Parramon, Matthew Kenworthy, Elina Kleisioti, Lorenzo König, Mariya Krasteva, Iva Laginja, Rico Landman, Johan Mazoyers, Maxwell Millar-Blanchaer, David Mouillet, Mamadou N'Diaye, Frans Snik, Dirk van Dam, Kyle Van Gorkom, Maaike van Kooten, Sophia Vaughan, Arthur Vigan

Proceedings Volume 12680, 126801T (2023) https://doi.org/10.1117/12.2677410

KEYWORDS: Coronagraphy, Photons, Exoplanets, Stars, Wavefront sensors, Reflection, Pupil aberrations, Large telescopes, Cameras, Calibration

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Proceedings Article | 5 October 2023 Paper

Paper

Visible extreme adaptive optics on extremely large telescopes: towards detecting oxygen in Proxima Centauri b and analogs

J. Fowler, Sebastiaan Haffert, Maaike A. M. van Kooten, Rico Landman, Alexis Bidot, Adrien Hours, Mamadou N'Diaye, Olivier Absil, Lisa Altinier, Pierre Baudoz, Ruslan Belikov, Markus Johannes Bonse, Kimberly Bott, Bernhard Brandl, Alexis Carlotti, Sarah Casewell, Elodie Choquet, Nicolas Cowan, Niyati Desai, David Doelman, Kevin Fogarty, Timothy Gebhard, Yann Gutierrez, Olivier Guyon, Olivier Herscovici-Schiller, Roser Juanola-Parramon, Matthew Kenworthy, Elina Kleisioti, Lorenzo König, Mariya Krasteva, Iva Laginja, Lucie Leboulleux, Johan Mazoyer, Maxwell Millar-Blanchaer, David Mouillet, Emiel Por, Laurent Pueyo, Frans Snik, Dirk van Dam, Kyle van Gorkom, Sophia Vaughan

Proceedings Volume 12680, 126801U (2023) https://doi.org/10.1117/12.2677503

KEYWORDS: Wavefront errors, Adaptive optics, Wavefront sensors, Oxygen, Planets, Equipment, Stars, Coronagraphy, Telescopes, Large telescopes

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Proceedings Article | 5 October 2023 Poster + Paper

Poster + Paper

Integrated photonic-based coronagraphic systems for future space telescopes

Niyati Desai, Lorenzo König, Emiel Por, Roser Juanola-Parramon, Ruslan Belikov, Iva Laginja, Olivier Guyon, Laurent Pueyo, Kevin Fogarty, Olivier Absil, Lisa Altinier, Pierre Baudoz, Alexis Bidot, Markus Johannes Bonse, Kimberly Bott, Bernhard Brandl, Alexis Carlotti, Sarah Casewell, Elodie Choquet, Nicolas Cowan, David Doelman, J. Fowler, Timothy Gebhard, Yann Gutierrez, Sebastiaan Haffert, Olivier Herscovici-Schiller, Adrien Hours, Matthew Kenworthy, Elina Kleisioti, Mariya Krasteva, Rico Landman, Lucie Leboulleux, Johan Mazoyer, Maxwell Millar-Blanchaer, David Mouillet, Mamadou N'Diaye, Frans Snik, Dirk van Dam, Kyle van Gorkom, Maaike van Kooten, Sophia Vaughan

Proceedings Volume 12680, 126801S (2023) https://doi.org/10.1117/12.2677210

KEYWORDS: Coronagraphy, Planets, Yield improvement, Space telescopes, Exoplanets, Telescopes, Tolerancing, System integration, Physics, Equipment

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Proceedings Article | 30 August 2022 Poster + Paper

Poster + Paper

Connecting the astronomical testbed community - the CAOTIC project: optimized teaching methods for software version control concepts

Iva Laginja, Pablo Robles, Kevin Barjot, Lucie Leboulleux, Rebecca Jensen-Clem, Keira Brooks, Christopher Moriarty

Proceedings Volume 12185, 121853A (2022) https://doi.org/10.1117/12.2629483

KEYWORDS: Astronomy, Software development, Adaptive optics, Computer programming, Astronomical instrumentation, Control systems, Computer programming languages, Wavefront sensors, Software engineering, Imaging systems

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Proceedings Article | 29 August 2022 Poster + Paper

Poster + Paper

Coronagraphy for DiRect Imaging of Exoplanets (CIDRE) testbed 1: concept, optical set up, and experimental results of adaptive amplitude apodization

Lucie Leboulleux, Alexis Carlotti, Stéphane Curaba, Alain Delboubé, Laurent Jocou, Thibaut Moulin, Laurence Gluck, Marie-Hélène Sztefek

Proceedings Volume 12188, 121884J (2022) https://doi.org/10.1117/12.2629318

KEYWORDS: Digital micromirror devices, Coronagraphy, Apodization, Mirrors, Image segmentation, Exoplanets, Cameras, Adaptive optics, Wavefronts, Micromirrors

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Proceedings Article | 29 August 2022 Presentation + Paper

Presentation + Paper

Redundant Apodized Pupils (RAP) for high-contrast imagers robust to segmentation-due aberrations and island effect

Lucie Leboulleux, Alexis Carlotti, Mamadou N'Diaye, Faustine Cantalloube, Julien Milli, Arielle Bertrou-Cantou, David Mouillet, Nicolas Pourré, Christophe Vérinaud

Proceedings Volume 12188, 121881S (2022) https://doi.org/10.1117/12.2629276

KEYWORDS: Coronagraphy, Point spread functions, Image segmentation, Optical spheres, Telescopes, Surface plasmons, James Webb Space Telescope, Mirrors, Imaging systems, Thirty Meter Telescope

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Proceedings Article | 27 August 2022 Presentation + Paper

Presentation + Paper

High-contrast imager for complex aperture telescopes (HiCAT): 8. Dark zone demonstration with simultaneous closed-loop low-order wavefront sensing and control

Rémi Soummer, Emiel Por, Raphaël Pourcelot, Susan Redmond, Iva Laginja, Scott Will, Marshall Perrin, Laurent Pueyo, Ananya Sahoo, Peter Petrone, Keira Brooks, Rachel Fox, Alex Klein, Bryony Nickson, Thomas Comeau, Marc Ferrari, Rob Gontrum, John Hagopian, Lucie Leboulleux, Daniel Leongomez, Joe Lugten, Laurent Mugnier, Mamadou N'Diaye, Meiji Nguyen, James Noss, Jean-François Sauvage, Nathan Scott, Anand Sivaramakrishnan, Hari Subedi, Sam Weinstock

Proceedings Volume 12180, 1218026 (2022) https://doi.org/10.1117/12.2630444

KEYWORDS: Coronagraphy, Wavefronts, Wavefront sensors, Telescopes, Phase retrieval

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

Digging a dark hole in GRAVITY: towards Jupiter-like observations at the astronomical unit scale

Nicolas Pourré, Jean-Baptiste Le Bouquin, Julien Woillez, Alexis Carlotti, Lucie Leboulleux, Karine Perraut, Sylvestre Lacour

Proceedings Volume 12183, 121830V (2022) https://doi.org/10.1117/12.2629823

KEYWORDS: Planets, Adaptive optics, Exoplanets, Telescopes, Wavefronts, Interferometry, Diffraction, Atmospheric optics

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Proceedings Article | 4 August 2021 Presentation

Presentation

High-contrast imager for complex aperture telescopes (HiCAT): 7. Dark zone demonstration with fully segmented aperture coronagraph

Rémi Soummer, Iva Laginja, Scott Will, Marshall Perrin, James Noss, Emiel Por, Susan Redmond, Raphaël Pourcelot, Ananya Sahoo, Peter Petrone, Keira Brooks, Laurent Pueyo, Bryony Nickson, Matt Maclay, Gregory Brady, Thomas Comeau, Julia Fowler, Kelsey Glazer, Rob Gontrum, John Hagopian, Theo Jolivet, Maggie Kautz, Lucie Leboulleux, Evelyn McChesney, Laurent Mugnier, Mamadou N'Diaye, Meiji Nguyen, Heather Olszewski, Leonid Pogorelyuk, Jaret Prothro, Jean-François Sauvage, Nathan Scott, Ron Shiri, Anand Sivaramakrishnan, Hari Subedi, Sam Weinstock, Yinzi Xin, Rebecca Zhang

Proceedings Volume 11823, 118230T (2021) https://doi.org/10.1117/12.2594684

KEYWORDS: Image segmentation, Coronagraphy, Telescopes, Imaging systems, Wavefront sensors, Wavefronts, Deformable mirrors, Ultraviolet telescopes, Ultraviolet radiation, UV optics

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SPIE Journal Paper | 30 March 2021 Open Access

Open Access

Analytical tolerancing of segmented telescope co-phasing for exo-Earth high-contrast imaging

Iva Laginja, Rémi Soummer, Laurent Mugnier, Laurent Pueyo, Jean-François Sauvage, Lucie Leboulleux, Laura Coyle, J. Scott Knight

JATIS, Vol. 7, Issue 01, 015004, (March 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.1.015004

KEYWORDS: Image segmentation, Coronagraphy, Tolerancing, Telescopes, Statistical analysis, Device simulation, Error analysis, Wavefronts, Observatories, Mirrors

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Predicting contrast sensitivity to segmented aperture misalignment modes for the HiCAT testbed

Iva Laginja, Rémi Soummer, Laurent Mugnier, Laurent Pueyo, Jean-François Sauvage, Lucie Leboulleux, Laura Coyle, J. Scott Knight, Marshall Perrin, Scott Will, James Noss, Keira Brooks, Julia Fowler

Proceedings Volume 11443, 114433J (2020) https://doi.org/10.1117/12.2560113

KEYWORDS: Image segmentation, Coronagraphy, Contrast sensitivity, Wavefronts, Space telescopes, Telescopes, Tolerancing, Exoplanets, Mirrors, Optical aberrations

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Proceedings Article | 13 December 2020 Poster + Paper

Poster + Paper

Analytical model-based analysis of long-exposure images from ground-based telescopes

Lucie Leboulleux, Raphaël Galicher, Eric Gendron, Pierre Baudoz, Gérard Rousset

Proceedings Volume 11448, 114483Z (2020) https://doi.org/10.1117/12.2562627

KEYWORDS: Model-based design, Telescopes, Adaptive optics, Atmospheric turbulence, Image quality, Device simulation, Exoplanets, Image resolution, Coronagraphy, Imaging systems

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Proceedings Article | 9 September 2019 Presentation + Paper

Presentation + Paper

Wavefront error tolerancing for direct imaging of exo-Earths with a large segmented telescope in space

Iva Laginja, Lucie Leboulleux, Laurent Pueyo, Rémi Soummer, Jean-François Sauvage, Laurent Mugnier, Laura Coyle, J. Scott Knight, Kathryn St. Laurent, Emiel Por, James Noss

Proceedings Volume 11117, 1111717 (2019) https://doi.org/10.1117/12.2530300

KEYWORDS: Space telescopes, Wavefronts, Image segmentation, Telescopes, Coronagraphy, Instrument modeling, Planets, Space operations, Wavefront sensors, Computer simulations

Read Abstract +

Proceedings Article | 9 September 2019 Presentation

Presentation

High-contrast imager for complex aperture telescopes (HiCAT): 6. Two deformable mirror wavefront control (Conference Presentation)

Rémi Soummer, Iva Laginja, Scott Will, Roser Juanola-Parramon, Peter Petrone, Greg Brady, James Noss, Marshall Perrin, Julia Fowler, Heather Kurtz, Kathryn St. Laurent, Kevin Fogarty, Evelyn McChesney, Nathan Scott, Keira Brooks, Thomas Comeau, Marc Ferrari, Rob Gontrum, John Hagopian, Emmanuel Hugot, Lucie Leboulleux, Johan Mazoyer, Laurent Mugnier, Mamadou N'Diaye, Laurent Pueyo, Jean-François Sauvage, Ron Shiri, Anand Sivaramakrishnan, Ana-Maria Valenzuela, Neil Zimmerman

Proceedings Volume 11117, 111171Y (2019) https://doi.org/10.1117/12.2530299

KEYWORDS: Telescopes, Deformable mirrors, Imaging systems, Wavefronts, Wavefront sensors, Coronagraphy, Cameras, Ultraviolet telescopes, Image segmentation, Space telescopes

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Proceedings Article | 21 August 2018 Paper

Paper

James Webb Space Telescope optical simulation testbed V: wide-field phase retrieval assessment

Iva Laginja, Greg Brady, Rémi Soummer, Sylvain Egron, Christopher Moriarty, Charles-Philippe Lajoie, Aurélie Bonnefois, Vincent Michau, Élodie Choquet, Marc Ferrari, Lucie Leboulleux, Olivier Levecq, Mamadou N'Diaye, Marshall Perrin, Peter Petrone, Laurent Pueyo, Anand Sivaramakrishnan

Proceedings Volume 10698, 106983N (2018) https://doi.org/10.1117/12.2313892

KEYWORDS: Wavefronts, James Webb Space Telescope, Monochromatic aberrations, Point spread functions, Wavefront sensors, Mirrors, Cameras, Space telescopes, Telescopes, Phase retrieval

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Proceedings Article | 21 August 2018 Presentation + Paper

Presentation + Paper

High-contrast imager for complex aperture telescopes (HiCAT): 5. first results with segmented-aperture coronagraph and wavefront control

Rémi Soummer, Gregory Brady, Keira Brooks, Thomas Comeau, Élodie Choquet, Tom Dillon, Sylvain Egron, Rob Gontrum, John Hagopian, Iva Laginja, Lucie Leboulleux, Marshall Perrin, Peter Petrone, Laurent Pueyo, Johan Mazoyer, Mamadou N'Diaye, A. J. Eldorado Riggs, Ron Shiri, Anand Sivaramakrishnan, Kathryn St. Laurent, Ana-Maria Valenzuela, Neil Zimmerman

Proceedings Volume 10698, 106981O (2018) https://doi.org/10.1117/12.2314110

KEYWORDS: Coronagraphy, Space telescopes, Wavefronts, Telescopes, Metrology, Phase retrieval, Carbon nanotubes

Read Abstract +

Segmented telescopes are a possible approach to enable large-aperture space telescopes for the direct imaging and spectroscopy of habitable worlds. However, the increased complexity of their aperture geometry, due to the central obstruction, support structures and segment gaps, makes high-contrast imaging very challenging. The High-contrast imager for Complex Aperture Telescopes (HiCAT) testbed was designed to study and develop solutions for such telescope pupils using wavefront control and coronagraphic starlight suppression. The testbed design has the flexibility to enable studies with increasing complexity for telescope aperture geometries starting with off-axis telescopes, then on-axis telescopes with central obstruction and support structures - e.g. the Wide Field Infrared Survey Telescope (WFIRST) - up to on-axis segmented telescopes, including various concepts for a Large UV, Optical, IR telescope (LUVOIR). In the past year, HiCAT has made significant hardware and software updates in order to accelerate the development of the project. In addition to completely overhauling the software that runs the testbed, we have completed several hardware upgrades, including the second and third deformable mirror, and the first custom Apodized Pupil Lyot Coronagraph (APLC) optimized for the HiCAT aperture, which is similar to one of the possible geometries considered for LUVOIR. The testbed also includes several external metrology features for rapid replacement of parts, and in particular the ability to test multiple apodizers readily, an active tip-tilt control system to compensate for local vibration and air turbulence in the enclosure. On the software and operations side, the software infrastructure enables 24/7 automated experiments that include routine calibration tasks and high-contrast experiments. In this communication we present an overview and status update of the project, both on the hardware and software side, and describe the results obtained with APLC wavefront control.

SPIE Journal Paper | 17 August 2018

Pair-based Analytical model for Segmented Telescopes Imaging from Space for sensitivity analysis

Lucie Leboulleux, Jean-François Sauvage, Laurent Pueyo, Thierry Fusco, Rémi Soummer, Johan Mazoyer, Anand Sivaramakrishnan, Mamadou N’Diaye, Olivier Fauvarque

JATIS, Vol. 4, Issue 03, 035002, (August 2018) https://doi.org/10.1117/12.10.1117/1.JATIS.4.3.035002

KEYWORDS: Image segmentation, Coronagraphy, Telescopes, Space telescopes, Systems modeling, Error analysis, Monochromatic aberrations, Zernike polynomials, James Webb Space Telescope, Mirrors

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Proceedings Article | 24 July 2018 Paper

Paper

Phase-retrieval-based wavefront metrology for high contrast coronagraphy

Gregory Brady, Christopher Moriarty, Peter Petrone, Iva Laginja, Keira Brooks, Tom Comeau, Lucie Leboulleux, Rémi Soummer

Proceedings Volume 10698, 106986I (2018) https://doi.org/10.1117/12.2314368

KEYWORDS: Optical metrology, In situ metrology, Wavefront sensors, Wavefront metrology, Wavefront reconstruction, Wavefronts, Phase retrieval, Coronagraphy, Calibration, Mirrors, Deformable mirrors, Telescopes

Read Abstract +

Proceedings Article | 12 July 2018 Presentation + Paper

Presentation + Paper

Towards the experimental validation of the non-linear dark hole on the THD bench

Olivier Herscovici-Schiller, Laurent Mugnier, Pierre Baudoz, Raphaël Galicher, Jean-François Sauvage, Fabien Patru, Lucie Leboulleux, Arthur Vigan, Kjetil Dohlen, Thierry Fusco, Laurent Pueyo, Rémi Soummer, Jean-Michel Le Duigou

Proceedings Volume 10703, 1070329 (2018) https://doi.org/10.1117/12.2314100

KEYWORDS: Coronagraphy, Point spread functions, Deformable mirrors, Sensors, Wavefronts, Calibration, Cameras, Fourier transforms, Wavefront sensors, Spatial light modulators

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Proceedings Article | 6 July 2018 Paper

Paper

Sensitivity analysis for high-contrast imaging with segmented space telescopes

Lucie Leboulleux, Laurent Pueyo, Jean-François Sauvage, Thierry Fusco, Johan Mazoyer, Anand Sivaramakrishnan, Mamadou N'Diaye, Rémi Soummer

Proceedings Volume 10698, 106986H (2018) https://doi.org/10.1117/12.2313904

KEYWORDS: Segmented mirrors, Exoplanets, Space telescopes, Zernike polynomials, Coronagraphy, Telescopes, Point spread functions, Mirrors, Computer simulations, Error analysis

Read Abstract +

Direct imaging and spectroscopy of Earth-like planets will require high-contrast imaging at very close angular separation: 1e10 star to planet ux ratio at a few tenths of an arcsecond. Large telescopes in space are necessary to provide sufficient collecting area and angular resolution to achieve this goal. In the static case, coronagraphic instrument designs combined with wavefront control techniques have been optimized for segmented on-axis telescope geometries, but the extreme wavefront stability required at very high contrast of the order of tens of picometers remains one of the main challenges. Indeed, cophasing errors and instabilities directly contribute to the degradation of the final image contrast. A systematic understanding is therefore needed to quantify and optimize the static and dynamic constraints on segment phasing. We present an analytical model: Pair-based Analytical model for Segmented Telescopes Imaging from Space (PASTIS), which enables quasi-instantaneous analytical evaluations of the impact of segment-level aberrations and phasing on the image contrast. This model is based on a multiple sum of Young interference fringes between pairs of segments and produces short and long exposure coronagraphic images with a segmented telescope in presence of local phase aberrations on each segment. PASTIS matches end-to-end numerical simulations with high-fidelity (3% rms error on the contrast). Moreover, the model can be inverted by dint of a projection on the singular modes of the phase to provide constraints on each Zernike polynomial for each segment. These singular modes provide information on the contrast sensitivity to segment-level phasing errors in the pupil, which can be used to derive constraints on both static and dynamic mitigation strategies (e.g. backplane geometry or segment vibration sensing and control). The few most sensitive modes can be well identified and must be controlled at the level of tens of picometers, while the least sensitive modes in the hundreds of picometers. This novel formalism enables a fast and efficient sensitivity analysis for any segmented telescopes, in both static and dynamic modes.

Proceedings Article | 25 September 2017 Open Access

Open Access

Paper

James Webb Space telescope optical simulation testbed: experimental results with linear control alignment

Sylvain Egron, Charles-Philippe Lajoie, Vincent Michau, Aurélie Bonnefois, Clément Escolle, Lucie Leboulleux, Mamadou N'Diaye, Laurent Pueyo, Elodie Choquet, Marshall Perrin, Marie Ygouf, Thierry Fusco, Marc Ferrari, Emmanuel Hugot, Rémi Soummer

Proceedings Volume 10562, 1056225 (2017) https://doi.org/10.1117/12.2296105

KEYWORDS: James Webb Space Telescope, Wavefronts, Space telescopes, Optical alignment, Optical simulations, Mirrors, Optical testing, Telescopes, Wavefront sensors, Astronomical imaging

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Proceedings Article | 25 September 2017 Open Access

Open Access

Paper

Comparison of wavefront control algorithms and first results on the high-contrast imager for complex aperture telescopes (hicat) testbed

L. Leboulleux, M. N'Diaye, J. Mazoyer, L. Pueyo, M. Perrin, S. Egron, E. Choquet, J.-F. Sauvage, T. Fusco, R. Soummer

Proceedings Volume 10562, 105622Z (2017) https://doi.org/10.1117/12.2296154

KEYWORDS: Wavefronts, Coronagraphy, Space telescopes, Speckle, Telescopes, Deformable mirrors, Calibration, Wavefront sensors, Actuators, Imaging systems

Read Abstract +

Proceedings Article | 5 September 2017 Paper

Paper

James Webb Space Telescope optical simulation testbed IV: linear control alignment of the primary segmented mirror

Sylvain Egron, Rémi Soummer, Charles-Philippe Lajoie, Aurélie Bonnefois, Joseph Long, Vincent Michau, Elodie Choquet, Marc Ferrari, Lucie Leboulleux, Olivier Levecq, Johan Mazoyer, Mamadou N'Diaye, Marshall Perrin, Peter Petrone, Laurent Pueyo, Anand Sivaramakrishnan

Proceedings Volume 10398, 1039811 (2017) https://doi.org/10.1117/12.2272981

KEYWORDS: Wavefronts, James Webb Space Telescope, Segmented mirrors, Wavefront sensors, Space telescopes, Optical alignment, Mirrors, Optical simulations, Optical testing, Telescopes

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Proceedings Article | 1 September 2017 Presentation + Paper

Presentation + Paper

Sensitivity analysis for high-contrast missions with segmented telescopes

Lucie Leboulleux, Jean-François Sauvage, Laurent Pueyo, Thierry Fusco, Rémi Soummer, Mamadou N'Diaye, Kathryn St. Laurent

Proceedings Volume 10400, 104000M (2017) https://doi.org/10.1117/12.2274347

KEYWORDS: Image segmentation, Space telescopes, Telescopes, Imaging spectroscopy, Wavefronts, Exoplanets, Coronagraphy, Spectroscopy, Planets, Systems modeling

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Proceedings Article | 1 September 2017 Presentation + Paper

Presentation + Paper

Capabilities of ACAD-OSM, an active method for the correction of aperture discontinuities

Johan Mazoyer, Laurent Pueyo, Mamadou N'Diaye, Kevin Fogarty, Lucie Leboulleux, Sylvain Egron, Colin Norman

Proceedings Volume 10400, 104000G (2017) https://doi.org/10.1117/12.2273070

KEYWORDS: Deformable mirrors, Exoplanets, Imaging systems, Coronagraphy, Active optics, Actuators, Wavefronts, Control systems, Interferometry, Adaptive optics

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Proceedings Article | 4 October 2016 Paper

Paper

Real-time implementation of an LQG tip-tilt controller for regular science observation on GeMS

Gaetano Sivo, Rémy Juvénal, Caroline Kulcsár, Vincent Garrel, Pedro Gigoux, Henri-François Raynaud, Eduardo Marin, Jean-Marc Conan, Cyril Petit, William Rambold, Vanessa Montes, Cristian Moreno, Jeff Donahue, Rodrigo Carrasco, Marcos van Dam, Benoît Neichel, Lucie Leboulleux, Chad Trujillo

Proceedings Volume 9909, 99094Y (2016) https://doi.org/10.1117/12.2233191

KEYWORDS: Atmospheric optics, Gemini Observatory, Gemini Planet Imager, Adaptive optics, Telescopes, Device simulation, Data modeling, Autoregressive models, Real-time computing, Matrices

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Proceedings Article | 29 July 2016 Paper

Paper

James Webb Space Telescope optical simulation testbed III: first experimental results with linear-control alignment

Sylvain Egron, Charles-Philippe Lajoie, Lucie Leboulleux, Mamadou N'Diaye, Laurent Pueyo, Élodie Choquet, Marshall Perrin, Marie Ygouf, Vincent Michau, Aurélie Bonnefois, Thierry Fusco, Clément Escolle, Marc Ferrari, Emmanuel Hugot, Rémi Soummer

Proceedings Volume 9904, 99044A (2016) https://doi.org/10.1117/12.2233650

KEYWORDS: James Webb Space Telescope, Wavefront sensors, Space telescopes, Mirrors, Optical simulations, Wavefronts, Telescopes, Optical alignment, Cameras, Zemax

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Proceedings Article | 29 July 2016 Paper

Paper

High-contrast imager for Complex Aperture Telescopes (HiCAT). 4. Status and wavefront control development

Lucie Leboulleux, Mamadou N'Diaye, A. J. Riggs, Sylvain Egron, Johan Mazoyer, Laurent Pueyo, Elodie Choquet, Marshall Perrin, Jeremy Kasdin, Jean-François Sauvage, Thierry Fusco, Rémi Soummer

Proceedings Volume 9904, 99043C (2016) https://doi.org/10.1117/12.2233640

KEYWORDS: Space telescopes, Telescopes, Wavefronts, Coronagraphy, Speckle, Point spread functions, Mirrors, Cameras, Infrared telescopes, Ultraviolet telescopes

Read Abstract +

Segmented telescopes are a possible approach to enable large-aperture space telescopes for the direct imaging and spectroscopy of habitable worlds. However, the increased complexity of their aperture geometry, due to their central obstruction, support structures and segment gaps, makes high-contrast imaging very challenging. The High-contrast imager for Complex Aperture Telescopes (HiCAT) was designed to study and develop solutions for such telescope pupils using wavefront control and starlight suppression. The testbed design has the flexibility to enable studies with increasing complexity for telescope aperture geometries starting with off-axis telescopes, then on-axis telescopes with central obstruction and support structures (e.g. the Wide Field Infrared Survey Telescope [WFIRST]), up to on-axis segmented telescopes e.g. including various concepts for a Large UV, Optical, IR telescope (LUVOIR), such as the High Definition Space Telescope (HDST). We completed optical alignment in the summer of 2014 and a first deformable mirror was successfully integrated in the testbed, with a total wavefront error of 13nm RMS over a 18mm diameter circular pupil in open loop. HiCAT will also be provided with a segmented mirror conjugated with a shaped pupil representing the HDST configuration, to directly study wavefront control in the presence of segment gaps, central obstruction and spider. We recently applied a focal plane wavefront control method combined with a classical Lyot coronagraph on HiCAT, and we found limitations on contrast performance due to vibration effect. In this communication, we analyze this instability and study its impact on the performance of wavefront control algorithms. We present our Speckle Nulling code to control and correct for wavefront errors both in simulation mode and on testbed mode. This routine is first tested in simulation mode without instability to validate our code. We then add simulated vibrations to study the degradation of contrast performance in the presence of these effects.

Proceedings Article | 11 September 2015 Paper

Paper

High-contrast imager for complex aperture telescopes (HiCAT): 3. first lab results with wavefront control

Mamadou N'Diaye, Johan Mazoyer, Élodie Choquet, Laurent Pueyo, Marshall Perrin, Sylvain Egron, Lucie Leboulleux, Olivier Levecq, Alexis Carlotti, Chris Long, Rachel Lajoie, Rémi Soummer

Proceedings Volume 9605, 96050I (2015) https://doi.org/10.1117/12.2188497

KEYWORDS: Coronagraphy, Wavefronts, Telescopes, Image segmentation, Actuators, Speckle, Humidity, Space telescopes, Mirrors, Imaging systems

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Proceedings Article | 13 March 2015 Paper

Paper

Changing the color of textiles with realistic visual rendering

Mathieu Hébert, Lambert Henckens, Justine Barbier, Lucie Leboulleux, Marine Page, Lucie Roujas, Anthony Cazier

Proceedings Volume 9398, 93980Q (2015) https://doi.org/10.1117/12.2076445

KEYWORDS: Reflectivity, Visualization, Optical filters, Color imaging, Image filtering, Cameras, RGB color model, Scanners, Dielectrics, Polarization

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Proceedings Article | 28 August 2014 Paper

Paper

High-contrast Imager for Complex Aperture Telescopes (HICAT): II. Design overview and first light results

Mamadou N'Diaye, Elodie Choquet, Sylvain Egron, Laurent Pueyo, Lucie Leboulleux, Olivier Levecq, Marshall Perrin, Erin Elliot, J. Kent Wallace, Emmanuel Hugot, Michel Marcos, Marc Ferrari, Chris Long, Rachel Anderson, Audrey DiFelice, Rémi Soummer

Proceedings Volume 9143, 914327 (2014) https://doi.org/10.1117/12.2056694

KEYWORDS: Optics manufacturing, Optical alignment, Coronagraphy, Mirrors, Wavefronts, Telescopes, Space telescopes, Wavefront sensors, Cameras, Imaging systems

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Proceedings Article | 2 August 2014 Paper

Paper

James Webb Space Telescope Optical Simulation Testbed I: overview and first results

Marshall Perrin, Rémi Soummer, Élodie Choquet, Mamadou N'Diaye, Olivier Levecq, Charles-Philippe Lajoie, Marie Ygouf, Lucie Leboulleux, Sylvain Egron, Rachel Anderson, Chris Long, Erin Elliott, George Hartig, Laurent Pueyo, Roeland van der Marel, Matt Mountain

Proceedings Volume 9143, 914309 (2014) https://doi.org/10.1117/12.2056936

KEYWORDS: James Webb Space Telescope, Mirrors, Image segmentation, Wavefront sensors, Telescopes, Phase retrieval, Adaptive optics, Optical alignment, Space telescopes, Sensors

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Showing 5 of 32 publications

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