Dr. Romain Laugier Profile

Dr. Romain Laugier

at KU Leuven

SPIE Involvement:

Author

Publications (29)

Proceedings Article | 25 September 2024 Poster + Paper

Poster + Paper

MARVEL: an update on the four-telescope dedicated radial velocity facility at the Mercator Observatory

J. Pember, I. Argyriou, D. Atkinson, G. Ávila, L. Barrett, A. Brandeker, L. Buchhave, D. Coutts, W. De Meester, J. De Ridder, D. Defrère, A. Glasse, M. Güdel, M. Haidar, K. Hakim, S. Halverson, J. Harman, N. Jannsen, M. Janson, A. Kinney, S. Kovacs, R. Laugier, K. Missiaen, B. Montet, J. Morren, E. Palle, J. Pérez Padilla, W. Pessemier, D. Pollacco, B. Pope, S. Prins, A. Quirrenbach, G. Raskin, M. Reggiani, I. Ribas, H. Sana, C. Schwab, D. Seynaeve, R. Sharman, A. Stokes, J. Stürmer, A. Tkachenko, G. Tinetti, H. Van Winckel, B. Vandenbussche, C. Waring, R. Wittenmyer, D. Wright, Y. Zhou, D. Adams, N. Binos, J. Brzeski, Z. Cai, T. Chin, S. Ellis, T. Farrell, T. Feger, A. Ghari Zadeh, Y. Kripak, N. Kunwar, C. Lacombe, J. Lawrence, H. McGregor, D. Robertson, L. Waller, R. Zhelem

Proceedings Volume 13096, 130966B (2024) https://doi.org/10.1117/12.3021409

KEYWORDS: Telescopes, Spectrographs, Calibration, Fabry Perot interferometers, Observatories, Control systems, Sensors, Control software, Equipment, Domes

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

Asgard/NOTT: first lab assembly and experimental results

G. Garreau, A. Bigioli, R. Laugier, B. La Torre, M.-A. Martinod, K. Missiaen, J. Morren, G. Raskin, M. Salman, S. Gross, M. Ireland, A. Joó, L. Labadie, S. Madden, A. Mazzoli, G. Medgyesi, A. Sanny, A. Taras, B. Vandenbussche, D. Defrère

Proceedings Volume 13095, 130950P (2024) https://doi.org/10.1117/12.3017111

KEYWORDS: Mirrors, Cameras, Optical fabrication, Black bodies, Nulling interferometry, Reflection, Visible radiation, Photonics, Optomechanical design

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

Analytical and numerical instrumental noise simulations for the Large Interferometer For Exoplanets (LIFE)

Philipp Huber, Felix Dannert, Romain Laugier, Thomas Birbacher, Adrian Glauser, Jonah Hansen, Sascha Quanz

Proceedings Volume 13095, 130951F (2024) https://doi.org/10.1117/12.3018644

KEYWORDS: Planets, Numerical analysis, Nulling interferometry, Exoplanets, Interferometers, Testing and analysis, Observatories, Monte Carlo methods, Matrices, Numerical simulations

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Proceedings Article | 28 August 2024 Poster + Paper

Poster + Paper

Single spacecraft nulling interferometer for exoplanets: preliminary concepts

Jérôme Loicq, Denis Defrère, Romain Laugier, Rudolf Saathof, Jasper Bouwmeester, Pierre Piron, Sandra Potin, Colin Dandumont, Vincent Moreau, Benoit Borguet, Pascal Hallibert, David Alaluf, Isabel Escudero, Theresa Lueftinger, Bertrand Mennesson, William Danchi

Proceedings Volume 13095, 1309536 (2024) https://doi.org/10.1117/12.3018998

KEYWORDS: Exoplanets, Nulling interferometry, Telescopes, Astronomical interferometers, Planets, Space operations, Interferometers, Stars, Stellar interferometry, Spectrographs

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One of the most ambitious goals of modern astronomy is to uncover signs of extraterrestrial biological activity, primarily achieved through spectroscopic analysis of light emitted by exoplanets to identify specific atmospheric molecules. Most exoplanets are indirectly identified through techniques like transit or Doppler shift of the host star's flux. Long-term surveys have yielded statistical insights into the occurrence rates of different planet types based on factors such as radius/mass, orbital period, and the spectral type of the host star. Initial estimates of terrestrial planets within the habitable zone have also emerged. However, the difficulty of detecting light from these exoplanets leaves much unknown about their nature, formation, and evolution. As the number of rocky exoplanets around nearby stars rises, questions about their atmospheric composition, evolutionary trajectory, and habitability increase. Direct measurement of an exoplanet's atmospheric composition through its spectral signature in the infrared can provide answers. Measuring the infrared spectrum of these planets poses significant challenges due to the star/planet contrast and very small angular separation from their host stars. Previous research showed that space-based telescopes are mandatory, and unless large primary mirrors (>30m in diameter) can be sent into space, interferometric techniques become essential. Combining light from distant telescopes with interferometric techniques allows access to information at minimal angular separation, operating within the diffraction limit of individual telescopes. Successful demonstrations of on-ground nulling interferometry open a new era for such space-based missions. They are vital to sidestep and tackle these scientific questions. We recently initiated a new study with the European Space Agency to explore the design parameters and the performances related to an interferometric concept based on a single spacecraft and sparse multiple sub-apertures. Launch constraints are linked to the use of an Ariane 6 launch vehicle. Our parametric study covers a range of 1-4m for the diameter of the telescope and a 10-60m baseline. The most promising concept working in the infrared range (3-20μm) will be highlighted. This study is conducted by TUDelft in cooperation with KULeuven, CSL/ULiège, and Amos with the support of the European Space Agency.

Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

Pushing high angular resolution and high contrast observations on the VLTI from Y to L band with the Asgard instrumental suite: integration status and plans

Marc-Antoine Martinod, Denis Defrère, Michael Ireland, Stefan Kraus, Frantz Martinache, Peter Tuthill, Fatmé Allouche, Emilie Bouzerand, Julia Bryant, Josh Carter, Sorabh Chhabra, Benjamin Courtney-Barrer, Fred Crous, Nick Cvetojevic, Colin Dandumont, Steve Ertel, Tyler Gardner, Germain Garreau, Adrian Glauser, Xavier Haubois, Lucas Labadie, Stéphane Lagarde, Daniel Lancaster, Romain Laugier, Alexandra Mazzoli, Anthony Meilland, Kwinten Missiaen, Sebastien Morel, Daniel Mortimer, Barnaby Norris, Jyotirmay Paul, Gert Raskin, Sylvie Robbe-Dubois, J. Gordon Robertson, Ahmed Sanny, Nicolas Schuhler, Owain Snaith, Adam Taras

Proceedings Volume 13095, 130950D (2024) https://doi.org/10.1117/12.3016296

KEYWORDS: Equipment, Spectrographs, Sensors, Lawrencium, L band, Calibration, Nulling interferometry, Astronomical interferometers, Spatial resolution, Control software

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Proceedings Article | 28 August 2024 Poster + Paper

Poster + Paper

Asgard/NOTT: water vapor and CO2 atmospheric dispersion compensation system

Romain Laugier, Denis Defrère, Michael Ireland, Germain Garreau, Olivier Absil, Alexis Matter, Romain Petrov, Philippe Berio, Peter Tuthill, Lucas Labadie, Marc-Antoine Martinod

Proceedings Volume 13095, 130952C (2024) https://doi.org/10.1117/12.3018150

KEYWORDS: Glasses, Nulling interferometry, Zinc selenide, Prisms, L band, Design, Interferometers, Infrared radiation, Dispersion

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The direct detection of exoplanets and circumstellar disks is currently limited by a combination of high contrast and small angular separation. At the scale of single telescopes, these limitations are fought with coronagraphs, which remove the diffracted light from the central source. To obtain similar benefits with interferometry, one must employ specialized beam-combiners called interferometric nullers. Nullers discard the on-axis light and part of the astrophysical information to optimize the recording of light present in the dark fringe of the central source, which may contain light from circumstellar sources of interest. Asgard/NOTT will deploy an advanced beam-combination scheme offering favorable instrumental noise characteristics when the inputs are phased appropriately, although this tuning will require a specific strategy to overcome the resulting degeneracy. Furthermore, this must bring the phase of the incoming light to a good accuracy across the usable spectrum. Since the fringe-tracker operates at different wavelengths, it can only sense part of the offending errors, and we discuss the measurement of these errors with the science detector. NOTT operates in the L band and suffers from various effects such as water vapor, which has already been experienced with N-band nullers (Keck Interferometer Nuller, Large Binocular Telescope Interferometer). This effect can be corrected with prisms forming a variable thickness of glass and an adjustment of air optical path. Moreover, observations in the L band suffer from an additional and important chromatic effect due to longitudinal atmospheric dispersion coming from a resonance of carbon dioxide at 4.3μm that is impractical to correct with glass plates because of its non-linear wavelength dependency. To compensate for this effect efficiently, a novel type of compensation device will be deployed leveraging a gas cell of variable length at ambient pressure. After reviewing the impact of water vapor and CO₂, we present the design of this atmospheric dispersion compensation device for Asgard/NOTT and describe a strategy to maintain this tuning on-sky.

Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

L-band nulling interferometry at the VLTI with Asgard/NOTT: status and plans

Denis Defrère, Romain Laugier, Marc-Antoine Martinod, Germain Garreau, Kwinten Missiaen, Muhammad Salman, Gert Raskin, Colin Dandumont, Steve Ertel, Michael Ireland, Stefan Kraus, Lucas Labadie, Alexandra Mazzolli, Gyorgy Medgyesi, Ahmed Sanny, Olivier Absil, Peter Ábráham, Jean-Philippe Berger, Myriam Bonduelle, Azzurra Bigioli, Emilie Bouzerand, Josh Carter, Nick Cvetojevic, Benjamin Courtney-Barrer, Adrian Glauser, Simon Gross, Xavier Haubois, Noel James, Andras Peter Joo, Stephane Lagarde, Alain Léger, Jarron Leisenring, Jérôme Loicq, Guillermo Martin, Frantz Martinache, Gyorgy Mezo, Sébastien Morel, Johan Morren, Marc Ollivier, Gordon Robertson, Hélène Rousseau, Warrick Schofield, Nicolas Schuhler, Adam Taras, Bart Vandenbussche, Julien Woillez

Proceedings Volume 13095, 130950F (2024) https://doi.org/10.1117/12.3019922

KEYWORDS: Equipment, Planets, Nulling interferometry, Interferometers, Stars, Exoplanets, Sensors, Photonics, Observational astronomy, Design

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

GRAVITY+ Wide: towards hundreds of z ∼ 2 AGN, larger throughput and improved vibrational control

Maximilian Fabricius, Julien Woillez, Roberto Abuter, Guillaume Bourdarot, Pierre Bourget, Wolfgang Brandner, Amit Brara, Denis Defrère, Antonia Drescher, Frank Eisenhauer, Helmut Feuchtgruber, Robert Frahm, Reinhard Genzel, Stefan Gillessen, Frédéric Gonté, Vishaal Gopinath, Jonas Graf, Michael Hartl, Frank Haußmann, Sebastian Hönig, Matthew Horrobin, Paulo J. Garcia, Tilo Jilg, Laura Kreidberg, Romain Laugier, Jean-Baptiste Le Bouquin, Mari Lena Bolzer, Dieter Lutz, Nikhil More, Thomas Ott, Hakan Özdemir, Thibaut Paumard, Karine Perraut, Guy Perrin, Christian Rau, Christian Rehm, Jonas Sauter, Nicolas Schuhler, Daniel Schuppe, Jinyi Shangguan, Taro Shimizu, Christian Straubmeier, Matthias Subroweit, Sinem Uysal, Patrick Wessely, Felix Widmann, Ekkehard Wieprecht, Lukas Wimmer, Senol Yazici, Hagen Prowatke, Ralf Böttcher

Proceedings Volume 13095, 130950B (2024) https://doi.org/10.1117/12.3019984

KEYWORDS: Astronomical interferometers, Control systems, Beam path, Mirrors, Vibration, Vibration control, Telescopes, Optical benches, Optical path differences

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

The Large Interferometer For Exoplanets (LIFE): a space mission for mid-infrared nulling interferometry

Adrian Glauser, Sascha Quanz, Jonah Hansen, Felix Dannert, Michael Ireland, Hendrik Linz, Olivier Absil, Eleonora Alei, Daniel Angerhausen, Thomas Birbacher, Denis Defrère, Andrea Fortier, Philipp Huber, Jens Kammerer, Romain Laugier, Tim Lichtenberg, Lena Noack, Mohanakrishna Ranganathan, Sarah Rugheimer, Vladimir Airapetian, Yann Alibert, Pedro Amado, Marius Anger, Narsireddy Anugu, Max Aragon, David Armstrong, Amedeo Balbi, Olga Balsalobre-Ruza, Deepayan Banik, Mathias Beck, Surendra Bhattarai, Jonas Biren, Jacopo Bottoni, Marrick Braam, Alexis Brandeker, Lars Buchhave, José Caballero, Juan Cabrera, Ludmila Carone, Óscar Carrión-González, Amadeo Castro-González, Kenny Chan, Ligia Coelho, Tereza Constantinou, Nicolas Cowan, William Danchi, Colin Dandumont, Jeanne Davoult, Arjun Dawn, Jean-Pierre de Vera, Pieter de Visser, Caroline Dorn, Juan Duque Lara, Mark Elowitz, Steve Ertel, Yuedong Fang, Simon Felix, Jonathan Fortney, Malcolm Fridlund, Antonio García Muñoz, Cedric Gillmann, Gregor Golabek, John Lee Grenfell, Greta Guidi, Octavio Guilera, Janis Hagelberg, Janina Hansen, Jacob Haqq-Misra, Nathan Hara, Ravit Helled, Konstantin Herbst, Nina Hernitschek, Sasha Hinkley, Takahiro Ito, Satoshi Itoh, Stavro Ivanovski, Markus Janson, Anders Johansen, Hugh Jones, Stephen Kane, Daniel Kitzmann, Andjelka Kovacevic, Stefan Kraus, Oliver Krause, J. M. Diederik Kruijssen, Rolf Kuiper, Alen Kuriakose, Lucas Labadie, Sylvestre Lacour, Antonino Lanza, Laurits Leedjärv, Monika Lendl, Michaela Leung, Jorge Lillo-Box, Jérôme Loicq, Rafael Luque, Suvrath Mahadevan, Liton Majumdar, Fabien Malbet, Franco Mallia, Joice Mathew, Taro Matsuo, Elisabeth Matthews, Victoria Meadows, Bertrand Mennesson, Michael Meyer, Karan Molaverdikhani, Paul Mollière, John Monnier, Ramon Navarro, Benard Nsamba, Kenshiro Oguri, Apurva Oza, Enric Palle, Carina Persson, Joe Pitman, Eva Plávalová, Francisco Pozuelos, Andreas Quirrenbach, Ramses Ramirez, Ansgar Reiners, Ignasi Ribas, Malena Rice, Berke Vow Ricketti, Peter Roelfsema, Amedeo Romagnolo, María Paula Ronco, Martin Schlecker, Jessica Schonhut-Stasik, Edward Schwieterman, Antranik Sefilian, Eugene Serabyn, Chinmay Shahi, Siddhant Sharma, Laura Silva, Swapnil Singh, Evan Sneed, Locke Spencer, Vito Squicciarini, Johannes Staguhn, Karl Stapelfeldt, Keivan Stassun, Motohide Tamura, Benjamin Taysum, Floris van der Tak, Tim van Kempen, Gautam Vasisht, Haiyang Wang, Robin Wordsworth, Mark Wyatt

Proceedings Volume 13095, 130951D (2024) https://doi.org/10.1117/12.3019090

KEYWORDS: Nulling interferometry, Space operations, Planets, Beam combiners, Exoplanets, Stars, Sensors, Polarization, Telescopes, Observational astronomy

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

Generic data reduction for nulling interferometry package: the grip of a single data reduction package on all the nulling interferometers

Marc-Antoine Martinod, Denis Defrère, Romain Laugier, Steve Ertel, Olivier Absil, Barnaby Norris, Germain Garreau, Bertrand Mennesson

Proceedings Volume 13095, 130951A (2024) https://doi.org/10.1117/12.3017506

KEYWORDS: Nulling interferometry, Equipment, Calibration, Histograms, Monte Carlo methods, Device simulation, Stars, Instrument modeling, Data modeling, Telescopes

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Proceedings Article | 28 August 2024 Presentation + Paper

Presentation + Paper

VLTI Unit Telescope coudé train vibration control upgrade for GRAVITY+

Romain Laugier, Julien Woillez, Denis Defrère, Benjamin Courtney-Barrer, Muhammad Salman, Babak Sedghi, Roberto Abuter, Azzurra Bigioli, Maximilian Fabricius, Frank Eisenhauer, Frédéric Gonté, Nicolas Schuhler, Dieter Lutz, Miguel Riquelme, Pierre Bourget, Philippe Neuville, Sylvestre Lacour, Mathias Nowak

Proceedings Volume 13095, 130950M (2024) https://doi.org/10.1117/12.3018146

KEYWORDS: Tunable filters, Vibration, Actuators, Mirrors, Telescopes, Accelerometers, Sensors, Vibration control

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Proceedings Article | 28 August 2024 Presentation

Presentation

Development status of the L’-band 4-telescope integrated optics nulling beam combiner for NOTT

Ahmed Sanny, Lucas Labadie, Simon Gross, Michael Withford, Romain Laugier, Marc-Antoine Martinod, Germain Garreau, Denis Defrère

Proceedings Volume 13095, 130950Q (2024) https://doi.org/10.1117/12.3018873

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SPIE Journal Paper | 15 February 2024

Asgard/NOTT: L-band nulling interferometry at the VLTI. II. Warm optical design and injection system

Germain Garreau, Azzurra Bigioli, Romain Laugier, Gert Raskin, Johan Morren, Jean-Philippe Berger, Colin Dandumont, Harry-Dean Kenchington Goldsmith, Simon Gross, Michael Ireland, Lucas Labadie, Jérôme Loicq, Stephen Madden, Guillermo Martin, Marc-Antoine Martinod, Alexandra Mazzoli, Ahmed Sanny, Hancheng Shao, Kunlun Yan, Denis Defrère

JATIS, Vol. 10, Issue 01, 015002, (February 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.015002

KEYWORDS: Nulling interferometry, Wavefront errors, Optical design, Equipment, Polarization, Optical path differences, L band, Design, Birefringence, Error analysis

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SPIE Journal Paper | 27 June 2023

High-angular resolution and high contrast observations from Y to L band at the Very Large Telescope Interferometer with the Asgard Instrumental suite

Marc-Antoine Martinod, Denis Defrère, Michael Ireland, Stefan Kraus, Frantz Martinache, Peter Tuthill, Azzurra Bigioli, Emilie Bouzerand, Julia Bryant, Sorabh Chhabra, Benjamin Courtney-Barrer, Fred Crous, Nick Cvetojevic, Colin Dandumont, Steve Ertel, Tyler Gardner, Germain Garreau, Adrian Glauser, Lucas Labadie, Tiphaine Lagadec, Romain Laugier, Alexandra Mazzoli, Daniel Mortimer, Barnaby R. Norris, Gert Raskin, Gordon Robertson, Ahmed Sanny, Adam Taras

JATIS, Vol. 9, Issue 02, 025007, (June 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.025007

KEYWORDS: Equipment, Stars, L band, Exoplanets, Astronomical interferometers, Nulling interferometry, Imaging systems, Spatial resolution, Planets, Planetary systems

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Proceedings Article | 29 August 2022 Presentation

Presentation

Closed-loop on-chip phase control and fringe tracking in photonic interferometers

Nick Cvetojevic, Frantz Martinache, Peter Chingaipe, Romain Laugier, Mamadou N'Diaye, Roxanne Ligi, David Mary

Proceedings Volume 12183, 1218318 (2022) https://doi.org/10.1117/12.2630002

KEYWORDS: Interferometers, Phase interferometry, Nulling interferometry, Waveguides, Telescopes, Adaptive optics, Actuators, Time metrology, Thermal optics, Servomechanisms

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

Measuring and compensating vibrations at the VLTI: MANHATTAN-II self-intrinsic noise and hardware extension

A. Bigioli, B. Courtney-Barrer, R. Abuter, F. Eisenhauer, F. Gonte, R. Laugier, G. Raskin, M. Riquelme, M. Salman, N. Schuhler, J. Woillez, D. Defrère

Proceedings Volume 12183, 121831Z (2022) https://doi.org/10.1117/12.2629168

KEYWORDS: Vibration control, Sensors, Mirrors, Optical amplifiers, Telescopes, Amplifiers, Interferometry, Fringe analysis, Atmospheric modeling

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

Technical requirements and optical design of the Hi-5 spectrometer

C. Dandumont, A. Mazzoli, V. Laborde, R. Laugier, A. Bigioli, G. Garreau, S. Gross, M. Ireland, H.-D. Kenchington Goldsmith, L. Labadie, M.-A. Martinod, G. Raskin, A. Sanny, J. Loicq, D. Defrère

Proceedings Volume 12183, 121831Y (2022) https://doi.org/10.1117/12.2627939

KEYWORDS: Spectroscopy, Polarization, Spectral resolution, Optical design, Diffraction, Sensors, Diffraction gratings, Point spread functions, Germanium, Telescopes

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

L-band nulling interferometry at the VLTI with Asgard/Hi-5: status and plans

Denis Defrère, Azzurra Bigioli, Colin Dandumont, Germain Garreau, Romain Laugier, Marc-Antoine Martinod, Olivier Absil, Jean-Philippe Berger, Emilie Bouzerand, Benjamin Courtney-Barrer, Alexandre Emsenhuber, Steve Ertel, Jonathan Gagne, Adrian Glauser, Simon Gross, Michael Ireland, Harry-Dean Kenchington, Jacques Kluska, Stefan Kraus, Lucas Labadie, Viktor Laborde, Alain Léger, Jarron Leisenring, Jérôme Loicq, Guillermo Martin, Johan Morren, Alexis Matter, Alexandra Mazzoli, Kwinten Missiaen, Salman Muhammad, Marc Ollivier, Gert Raskin, Hélène Rousseau, Ahmed Sanny, Simon Verlinden, Bart Vandenbussche, Julien Woillez

Proceedings Volume 12183, 121830H (2022) https://doi.org/10.1117/12.2627953

KEYWORDS: Stars, Planets, Exoplanets, Nulling interferometry, L band, Telescopes, Interferometers, Astronomy, Spectral resolution, Interferometry

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

High-angular and high-contrast VLTI observations from Y to M band with the Asgard instrumental suite

Marc-Antoine Martinod, Denis Defrère, Michael Ireland, Stefan Kraus, Frantz Martinache, Peter Tuthill, Azzurra Bigioli, Julia Bryant, Sorabh Chhabra, Benjamin Courtney-Barrer, Fred Crous, Nick Cvetojevic, Colin Dandumont, Germain Garreau, Tiphaine Lagadec, Romain Laugier, Daniel Mortimer, Barnaby Norris, Gordon Robertson, Adam Taras

Proceedings Volume 12183, 1218310 (2022) https://doi.org/10.1117/12.2628151

KEYWORDS: Sensors, Mirrors, Cameras, Lawrencium, Camera shutters, L band, Interferometers, Calibration, Spectral resolution, Spatial resolution

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

The expected performance of nulling at the VLTI down to five mas

Romain Laugier, Denis Defrère, Alexis Matter, Simon Gross, Benjamin Courtney-Barrer, Felix Dannert, Julien Woillez, Olivier Absil, Colin Dandumont

Proceedings Volume 12183, 1218321 (2022) https://doi.org/10.1117/12.2629292

KEYWORDS: Stars, Nulling interferometry, Error analysis, Monte Carlo methods, Dispersion, Spectral resolution, Sensors, Planets, Wavefronts

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

VLTI/Hi-5: detection yield predictions for young giant exoplanets

C. Dandumont, R. Laugier, A. Emsenhuber, J. Gagne, O. Absil, A. Bigioli, M. Bonavita, G. Garreau, M. Ireland, M.-A. Martinod, J. Loicq, D. Defrère

Proceedings Volume 12183, 1218327 (2022) https://doi.org/10.1117/12.2627942

KEYWORDS: Stars, Planets, Exoplanets, Systems modeling, Atmospheric modeling, Statistical modeling, Astatine, Planetary systems, Spatial resolution, Error analysis

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

Towards a better understanding of OPD limitations for higher sensitivity and contrast at the VLTI

B. Courtney-Barrer, J. Woillez, R. Laugier, A. Bigioli, N. Schuhler, P. Guajardo, V. Lizana, N. Behara, F. Eisenhauer, M. Ireland, X. Haubois, D. Defrère

Proceedings Volume 12183, 1218328 (2022) https://doi.org/10.1117/12.2628835

KEYWORDS: Mirrors, Telescopes, Waveguides, Oscillators, Wavefronts, Astatine, Atmospheric modeling, Adaptive optics, Waveguide modes, Digital filtering

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Proceedings Article | 26 August 2022 Poster + Paper

Poster + Paper

Design of the VLTI/Hi-5 light injection system

G. Garreau, A. Bigioli, G. Raskin, J.-P. Berger, C. Dandumont, H.-D. Kenchington Goldsmith, S. Gross, M. Ireland, L. Labadie, R. Laugier, J. Loicq, S. Madden, G. Martin, A. Mazzoli, J. Morren, H. Shao, K. Yan, D. Defrère

Proceedings Volume 12183, 1218320 (2022) https://doi.org/10.1117/12.2629180

KEYWORDS: Mirrors, Zemax, Wavefronts, Tolerancing, Photonics, Nulling interferometry, Error analysis, Telescopes, Optical design

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

Development of the four-telescope photonic nuller of Hi-5 for the characterization of exoplanets in the mid-IR

A. Sanny, S. Gross, L. Labadie, D. Defrère, A. Bigioli, R. Laugier, C. Dandumont, M. Withford

Proceedings Volume 12183, 1218316 (2022) https://doi.org/10.1117/12.2628903

KEYWORDS: Directional couplers, Nulling interferometry, Interferometry, Waveguides, Photometry, Integrated optics, Mid-IR

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

Statistical tests with multi-wavelength Kernel-phase analysis for the detection and characterization of planetary companions

Mamadou N'Diaye, David Mary, Frantz Martinache, Roxanne Ligi, Nick Cvetojevic, Peter Chingaipe, Romain Laugier

Proceedings Volume 12183, 121831M (2022) https://doi.org/10.1117/12.2629961

KEYWORDS: Stars, Statistical analysis, Sensors, Planets, Telescopes, Adaptive optics, Spectral resolution, Monte Carlo methods, Exoplanets

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Proceedings Article | 26 August 2022 Presentation + Paper

Presentation + Paper

Beam combiner for the Asgard/BIFROST instrument

Daniel Mortimer, Sorabh Chhabra, Stefan Kraus, Narsireddy Anugu, Romain Laugier, Jean-Baptiste Le Bouquin, John Monnier

Proceedings Volume 12183, 121831U (2022) https://doi.org/10.1117/12.2629268

KEYWORDS: Signal to noise ratio, Single mode fibers, Visibility, Photons, Spatial frequencies, Spectral resolution

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Status of the SCExAO instrument: recent technology upgrades and path to a system-level demonstrator for PSI

Julien Lozi, Olivier Guyon, Sébastien Vievard, Ananya Sahoo, Vincent Deo, Nemanja Jovanovic, Barnaby Norris, Marc-Antoine Martinod, Ben Mazin, Alex Walter, Neelay Fruitwala, Sarah Steiger, Kristina Davis, Peter Tuthill, Tomoyuki Kudo, Hajime Kawahara, Takayuki Kotani, Michael Ireland, Theodoros Anagnos, Chrstian Schwab, Nick Cvetojevic, Elsa Huby, Sylvestre Lacour, Kevin Barjot, Tyler Groff, Jeffrey Chilcote, Jeremy Kasdin, Frantz Martinache, Romain Laugier, Mamadou N'Diaye, Justin Knight, Jared Males, Steven Bos, Frans Snik, David Doelman, Kelsey Miller, Eduardo Bendek, Ruslan Belikov, Eugene Pluzhnik, Thayne Currie, Masayuki Kuzuhara, Taichi Uyama, Jun Nishikawa, Naoshi Murakami, Jun Hashimoto, Yosuke Minowa, Christophe Clergeon, Yoshito Ono, Naruhisa Takato, Motohide Tamura, Hideki Takami, Masa Hayashi

Proceedings Volume 11448, 114480N (2020) https://doi.org/10.1117/12.2562832

KEYWORDS: Imaging systems, Telescopes, Infrared sensors, Infrared imaging, Coronagraphy, Wavefront sensors, Sensors, Detection and tracking algorithms, Cameras, Wavefronts

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Proceedings Article | 13 December 2020 Presentation + Paper

Presentation + Paper

Reconciling kernel-phase and coronagraphy: new steps towards combining the performance of opposing techniques

Romain Laugier, Frantz Martinache, Mamadou N'Diaye, Nick Cvetojevic

Proceedings Volume 11446, 114461Q (2020) https://doi.org/10.1117/12.2562303

KEYWORDS: Coronagraphy, Stars, Wavefronts, Spatial resolution, Feature extraction, Diffraction, Image analysis, Fourier transforms, Telescopes, Apodization

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Proceedings Article | 13 December 2020 Paper

Paper

Review and scientific prospects of high-contrast optical stellar interferometry

D. Defrère, O. Absil, J.-P. Berger, W. C. Danchi, C. Dandumont, F. Eisenhauer, S. Ertel, T. Gardner, A. Glauser, P. Hinz, M. Ireland, J. Kammerer, S. Kraus, L. Labadie, S. Lacour, R. Laugier, J. Loicq, G. Martin, F. Martinache, M. A. Martinod, B. Mennesson, J. Monnier, B. Norris, M. Nowak, J. U. Pott, S. Quanz, E. Serabyn, J. Stone, P. Tuthill, J. Woillez

Proceedings Volume 11446, 114461J (2020) https://doi.org/10.1117/12.2561505

KEYWORDS: Stellar interferometry, Interferometry, Nulling interferometry, Data acquisition, Stars, Adaptive optics, Integrated optics, Calibration, Large telescopes

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