Dr. John T. Trauger Profile

Dr. John T. Trauger

Senior Research Scientist at Jet Propulsion Laboratory

SPIE Involvement:

Author

Publications (83)

Proceedings Article | 23 August 2024 Poster + Paper

A hardware implementation for low-order wavefront sensing and control in exoplanet imaging

John Trauger, J. Kent Wallace, John Krist, A. Riggs, Duncan Liu

Proceedings Volume 13092, 130926C (2024) https://doi.org/10.1117/12.3020600

KEYWORDS: Coronagraphy, Wavefronts, Wavefront errors, Wavefront sensors, Optical components, Exoplanets, Deformable mirrors, Telescopes

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Proceedings Article | 23 August 2024 Poster + Paper

Coronagraph design survey for future exoplanet direct imaging space missions

Ruslan Belikov, Christopher Stark, Nick Siegler, Emiel Por, Bertrand Mennesson, Susan Redmond, Pin Chen, Kevin Fogarty, Olivier Guyon, Roser Juanola-Parramon, Jeremy Kasdin, John Krist, Dimitri Mawet, Rhonda Morgan, Camilo Mejia Prada, Laurent Pueyo, Garreth Ruane, Dan Sirbu, Karl Stapelfeldt, John Trauger, Neil Zimmerman, Mary Angelie Alagao, Alex Carlotti, Jamal Chafi, David Doleman, Jessica Gersh-Range, Lorenzo König, Lucille Leboulleux, Dwight Moody, A. Riggs, Eugene Serabyn, Frans Snik, Kent Wallace

Proceedings Volume 13092, 1309266 (2024) https://doi.org/10.1117/12.3020614

KEYWORDS: Coronagraphy, Design, Cadmium sulfide, Stars, Telescopes, Exoplanets, Equipment, Yield improvement, Planets, Photonic integrated circuits

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SPIE Journal Paper | 11 October 2023 Open Access

End-to-end numerical modeling of the Roman Space Telescope coronagraph

John Krist, John Steeves, Brandon Dube, A.J. Eldorado Riggs, Brian Kern, David Marx, Eric Cady, Hanying Zhou, Ilya Poberezhskiy, Caleb Baker, James McGuire, Bijan Nemati, Gary Kuan, Bertrand Mennesson, John Trauger, Navtej Saini, Sergi Hildebrandt Rafels

JATIS, Vol. 9, Issue 04, 045002, (October 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.4.045002

KEYWORDS: Coronagraphy, Actuators, Space telescopes, Numerical modeling, Wavefronts, Modeling, Stars, Monochromatic aberrations, Polarization, Simulations

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Proceedings Article | 5 October 2023 Poster + Paper

Coronagraph design survey for future exoplanet direct imaging space missions: interim update

Ruslan Belikov, Christopher Stark, Nick Siegler, Emiel Por, Bertrand Mennesson, Pin Chen, Kevin Fogarty, Olivier Guyon, Roser Juanola-Parramon, John Krist, Dimitri Mawet, Camilo Mejia Prada, Jeremy Kasdin, Laurent Pueyo, Susan Redmond, Garreth Ruane, Dan Sirbu, Karl Stapelfeldt, John Trauger, Neil Zimmerman

Proceedings Volume 12680, 126802G (2023) https://doi.org/10.1117/12.2677732

KEYWORDS: Coronagraphy, Design and modelling, Telescopes, Equipment, Exoplanets, Observatories, Wavefronts, Yield improvement, Planets

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Proceedings Article | 1 September 2021 Poster + Paper

Flight mask designs of the Roman Space Telescope coronagraph instrument

A. J. Eldorado Riggs, Vanessa Bailey, Dwight Moody, Erkin Sidick, Kunjithapatham Balasubramanian, Douglas Moore, Daniel Wilson, Garreth Ruane, Dan Sirbu, Jessica Gersh-Range, John Trauger, Bertrand Mennesson, Nicholas Siegler, Eduardo Bendek, Tyler Groff, Neil Zimmerman, John Debes, Scott Basinger, N. Jeremy Kasdin

Proceedings Volume 11823, 118231Y (2021) https://doi.org/10.1117/12.2598599

KEYWORDS: Coronagraphy, Photomasks, Exoplanets, Polarimetry, Spectroscopy, Space telescopes

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Proceedings Article | 16 September 2019 Presentation + Paper

Testbed demonstration of high-contrast coronagraph imaging in search for Earth-like exoplanets

Byoung-Joon Seo, Keith Patterson, Kunjithapatham Balasubramanian, Brendan Crill, Talso Chui, Daniel Echeverri, Brian Kern, David Marx, Dwight Moody, Camilo Mejia Prada, Garreth Ruane, Fang Shi, John Shaw, Nick Siegler, Hong Tang, John Trauger, Daniel Wilson, Robert Zimmer

Proceedings Volume 11117, 111171V (2019) https://doi.org/10.1117/12.2530033

KEYWORDS: Coronagraphy, Exoplanets, Space telescopes, James Webb Space Telescope, Infrared telescopes, Visible radiation, Aerospace engineering, Space operations, Telescopes, Near infrared

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Proceedings Article | 16 September 2019 Presentation + Paper

Design description and commissioning performance of a stable coronagraph technology development testbed for direct imaging of Earth-like exoplanets

Keith Patterson, Byoung-Joon Seo, Kunjithapatham Balasubramanian, Talso Chui, Brendan Crill, John Gill, Brian Kern, Ray Lam, David Marx, Dwight Moody, Camilo Mejia Prada, Garreth Ruane, Jordan Rupp, John Shaw, Fang Shi, Nicholas Siegler, Hong Tang, John Trauger, Victor White, Daniel Wilson, Karl Yee, Robert Zimmer

Proceedings Volume 11117, 111171U (2019) https://doi.org/10.1117/12.2530401

KEYWORDS: Exoplanets, Coronagraphy, Deformable mirrors, Visible radiation, Turbulence, Convection, Composites, Vibration isolation, Electronics, Wavefront sensors

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Proceedings Article | 9 September 2019 Presentation

The WFIRST coronagraph instrument (CGI) technology demonstration

N. Jeremy Kasdin, Bruce Macintosh, Margaret Turnbull, Vanessa Bailey, John Trauger, Bertrand Mennesson, Jason Rhodes, Margaret Frerking, Feng Zhao

Proceedings Volume 11117, 111170B (2019) https://doi.org/10.1117/12.2528929

KEYWORDS: Coronagraphy, Imaging spectroscopy, Planets, Infrared telescopes, James Webb Space Telescope, Exoplanets, Wavefronts, Algorithm development, Jupiter, Infrared radiation

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Proceedings Article | 9 September 2019 Open Access

Numerical modeling of the Habex coronagraph

John Krist, Stefan Martin, Gary Kuan, Bertrand Mennesson, Garreth Ruane, Navtej Saini, John Trauger, James Breckinridge, Dimitri Mawet, Philip Stahl, Jeffrey Davis

Proceedings Volume 11117, 1111705 (2019) https://doi.org/10.1117/12.2530462

KEYWORDS: Coronagraphy, Polarization, Telescopes, Numerical modeling

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Proceedings Article | 22 August 2018 Presentation + Paper

Hybrid lyot coronagraph for WFIRST: high contrast testbed demonstration in flight-like low flux environment

Byoung-Joon Seo, Fang Shi, Bala Balasubramanian, Eric Cady, Brian Gordon, Brian Kern, Raymond Lam, David Marx, Dwight Moody, Richard Muller, Keith Patterson, Ilya Poberezhskiy, Camilo Mejia Prada, A.J. Eldorado Riggs, John Trauger, Daniel Wilson

Proceedings Volume 10698, 106982P (2018) https://doi.org/10.1117/12.2314358

KEYWORDS: Coronagraphy, Telescopes, Wavefronts, Space telescopes, Low light level imaging

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Proceedings Article | 1 August 2018 Presentation + Paper

The WFIRST coronagraph instrument: a major step in the exploration of sun-like planetary systems via direct imaging

Bertrand Mennesson, J. Debes, E. Douglas, B. Nemati, C. Stark, J. Kasdin, B. Macintosh, M. Turnbull, M. Rizzo, A. Roberge, N. Zimmerman, K. Cahoy, J. Krist, V. Bailey, J. Trauger, J. Rhodes, L. Moustakas, M. Frerking, F. Zhao, I. Poberezhskiy, R. Demers

Proceedings Volume 10698, 106982I (2018) https://doi.org/10.1117/12.2313861

KEYWORDS: Stars, Coronagraphy, Planets, Imaging systems, Solar system, Clouds, Spatial resolution, Mid-IR, Visible radiation, Exoplanets

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Proceedings Article | 16 July 2018 Presentation + Paper

WFIRST coronagraph flight performance modeling

John Krist, Robert Effinger, Brian Kern, Milan Mandic, James McGuire, Dwight Moody, Patrick Morrissey, Ilya Poberezhskiy, A. J. Riggs, Navtej Saini, Erkin Sidick, Hong Tang, John Trauger

Proceedings Volume 10698, 106982K (2018) https://doi.org/10.1117/12.2310043

KEYWORDS: Coronagraphy, Thermal modeling

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Proceedings Article | 10 July 2018 Presentation

The WFIRST coronagraph instrument: technology demonstration and science potential (Conference Presentation)

N. Jeremy Kasdin, Margaret Turnbull, Bruce Macintosh, Nikole Lewis, Aki Roberge, John Trauger, Bertrand Mennesson, Vanessa Bailey, Jason Rhodes, Leonidas Moustakas, Margaret Frerking, Feng Zhao, Richard Demers, Ilya Poberezhskiy

Proceedings Volume 10698, 106982H (2018) https://doi.org/10.1117/12.2315002

KEYWORDS: Imaging spectroscopy, Coronagraphy, Exoplanets, Infrared telescopes, James Webb Space Telescope, Space telescopes, Spectroscopes, Planets, Infrared radiation, Telescopes

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Proceedings Article | 1 September 2017 Paper

Shaped pupil coronagraphy for WFIRST: high-contrast broadband testbed demonstration

Eric Cady, Kunjithapatham Balasubramanian, Jessica Gersh-Range, Jeremy Kasdin, Brian Kern, Raymond Lam, Camilo Mejia Prada, Dwight Moody, Keith Patterson, Ilya Poberezhskiy, A. J. Eldorado Riggs, Byoung-Joon Seo, Fang Shi, Hong Tang, John Trauger, Hanying Zhou, Neil Zimmerman

Proceedings Volume 10400, 104000E (2017) https://doi.org/10.1117/12.2272834

KEYWORDS: Wavefronts, Coronagraphy, Exoplanets, Wavefront sensors, Performance modeling, Systems modeling, Control systems

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Proceedings Article | 1 September 2017 Presentation + Paper

Sensitivity of WFIRST coronagraph broadband contrast performance to DM actuator errors

Erkin Sidick, Byoung-Joon Seo, Brian Kern, Ilya Poberezhskiy, Bijan Nemati, John Trauger

Proceedings Volume 10400, 1040006 (2017) https://doi.org/10.1117/12.2274421

KEYWORDS: Actuators, Deformable mirrors, Space telescopes, Exoplanets, Coronagraphy, Adaptive optics, Performance modeling, Wavefronts, Control systems, Interferometry

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Proceedings Article | 1 September 2017 Presentation + Paper

Hybrid Lyot coronagraph for WFIRST: high-contrast broadband testbed demonstration

Byoung-Joon Seo, Eric Cady, Brian Gordon, Brian Kern, Raymond Lam, David Marx, Dwight Moody, Richard Muller, Keith Patterson, Ilya Poberezhskiy, Camilo Mejia Prada, Erkin Sidick, Fang Shi, John Trauger, Daniel Wilson

Proceedings Volume 10400, 104000F (2017) https://doi.org/10.1117/12.2274687

KEYWORDS: Wavefronts, Infrared telescopes, Wavefront sensors, Infrared radiation, Space telescopes, Telescopes, Exoplanets, Metals, Dielectrics, Deformable mirrors

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Proceedings Article | 1 September 2017 Presentation + Paper

Dynamic testbed demonstration of WFIRST coronagraph low order wavefront sensing and control (LOWFS/C)

Fang Shi, Eric Cady, Byoung-Joon Seo, Xin An, Kunjithapatham Balasubramanian, Brian Kern, Raymond Lam, David Marx, Dwight Moody, Camilo Mejia Prada, Keith Patterson, Ilya Poberezhskiy, Joel Shields, Erkin Sidick, Hong Tang, John Trauger, Tuan Truong, Victor White, Daniel Wilson, Hanying Zhou

Proceedings Volume 10400, 104000D (2017) https://doi.org/10.1117/12.2274887

KEYWORDS: Wavefront sensors, Wavefronts, Mirrors, Deformable mirrors, Environmental sensing, Phase shifting, Optical telescopes, Optical fabrication, Device simulation, Space telescopes

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Proceedings Article | 29 July 2016 Paper

Concept study for a compact planetary homodyne interferometer (PHI) for temporal global observation of methane on Mars in IR

Sona Hosseini, Chris Webster, Geoffrey Toon, Wesley Traub, John Trauger

Proceedings Volume 9904, 99045C (2016) https://doi.org/10.1117/12.2233805

KEYWORDS: Methane, Mars, Homodyne detection, Spectral resolution, Interferometers, Spectroscopy, Telescopes, Space telescopes, Mirrors, Diffraction gratings

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SPIE Journal Paper | 11 March 2016

Coronagraph instrument for WFIRST-AFTA

M. Charley Noecker, Feng Zhao, Rick Demers, John Trauger, Olivier Guyon, N. Jeremy Kasdin

JATIS, Vol. 2, Issue 01, 011001, (March 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.1.011001

KEYWORDS: Coronagraphy, Space telescopes, Telescopes, Exoplanets, Planets, Stars, Mirrors, Observatories, Optical instrument design, Wavefronts

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SPIE Journal Paper | 8 March 2016

Hybrid Lyot coronagraph for wide-field infrared survey telescope-astrophysics focused telescope assets: occulter fabrication and high contrast narrowband testbed demonstration

Byoung-Joon Seo, Brian Gordon, Brian Kern, Andreas Kuhnert, Dwight Moody, Richard Muller, Ilya Poberezhskiy, John Trauger, Daniel Wilson

JATIS, Vol. 2, Issue 01, 011019, (March 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.1.011019

KEYWORDS: Coronagraphy, Telescopes, Infrared telescopes, Space telescopes, Nickel, Astronomical telescopes, Infrared radiation, Dielectrics, Actuators, Photomasks

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SPIE Journal Paper | 14 January 2016 Open Access

Hybrid Lyot coronagraph for WFIRST-AFTA: coronagraph design and performance metrics

John Trauger, Dwight Moody, John Krist, Brian Gordon

JATIS, Vol. 2, Issue 01, 011013, (January 2016) https://doi.org/10.1117/12.10.1117/1.JATIS.2.1.011013

KEYWORDS: Coronagraphy, Telescopes, Wavefronts, Exoplanets, Stars, Space telescopes, Optical instrument design, Mirrors, Imaging spectroscopy, Dielectrics

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Proceedings Article | 16 September 2015 Paper

Exo-C: a probe-scale space observatory for direct imaging and spectroscopy of extrasolar planetary systems

Karl Stapelfeldt, Frank Dekens, Michael Brenner, Keith Warfield, Ruslan Belikov, Paul Brugarolas, Geoffrey Bryden, Kerri Cahoy, Supriya Chakrabarti, Serge Dubovitsky, Robert Effinger, Brian Hirsch, Andrew Kissil, John Krist, Jared Lang, Mark Marley, Michael McElwain, Victoria Meadows, Joel Nissen, Jeffrey Oseas, Chris Pong, Eugene Serabyn, Eric Sunada, John Trauger, Stephen Unwin

Proceedings Volume 9605, 96050T (2015) https://doi.org/10.1117/12.2191720

KEYWORDS: Planets, Coronagraphy, Telescopes, Space telescopes, Stars, Exoplanets, Wavefronts, Space operations, Imaging spectroscopy, Spectroscopy

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Proceedings Article | 16 September 2015 Paper

Hybrid Lyot coronagraph for WFIRST-AFTA: coronagraph design and performance metrics

John Trauger, Brian Gordon, John Krist, Dwight Moody

Proceedings Volume 9605, 96050N (2015) https://doi.org/10.1117/12.2190625

KEYWORDS: Coronagraphy, Telescopes, Wavefronts, Exoplanets, Space telescopes, Stars, Mirrors, Optical instrument design, Actuators, Deformable mirrors

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Proceedings Article | 28 August 2014 Paper

Recent progress on phase-mask coronagraphy based on photonic-crystal technology

Naoshi Murakami, Jun Nishikawa, Motohide Tamura, Eugene Serabyn, Wesley Traub, Kurt Liewer, Dwight Moody, John Trauger, Olivier Guyon, Frantz Martinache, Nemanja Jovanovic, Garima Singh, Fumika Oshiyama, Hayato Shoji, Moritsugu Sakamoto, Shoki Hamaguchi, Kazuhiko Oka, Naoshi Baba

Proceedings Volume 9143, 914334 (2014) https://doi.org/10.1117/12.2054790

KEYWORDS: Coronagraphy, Manufacturing, Photomasks, Spiral phase plates, Space telescopes, Telescopes, Light sources, Polarizers, Adaptive optics, Polarization

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Proceedings Article | 28 August 2014 Paper

Exo-C: a probe-scale space mission to directly image and spectroscopically characterize exoplanetary systems using an internal coronagraph

Karl Stapelfeldt, Michael Brenner, Keith Warfield, Frank Dekens, Ruslan Belikov, Paul Brugarolas, Geoffrey Bryden, Kerri Cahoy, Supriya Chakrabarti, Serge Dubovitsky, Robert Effinger, Brian Hirsch, Andrew Kissil, John Krist, Jared Lang, Mark Marley, Michael McElwain, Victoria Meadows, Joel Nissen, Jeffrey Oseas, Eugene Serabyn, Eric Sunada, John Trauger, Stephen Unwin

Proceedings Volume 9143, 91432K (2014) https://doi.org/10.1117/12.2057115

KEYWORDS: Planets, Coronagraphy, Stars, Space telescopes, Telescopes, Space operations, Exoplanets, Wavefronts, Mirrors, Iterated function systems

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Proceedings Article | 2 August 2014 Paper

Technology development towards WFIRST-AFTA coronagraph

Ilya Poberezhskiy, Feng Zhao, Xin An, Kunjithapatham Balasubramanian, Ruslan Belikov, Eric Cady, Richard Demers, Rosemary Diaz, Qian Gong, Brian Gordon, Renaud Goullioud, Frank Greer, Olivier Guyon, Michael Hoenk, N. Jeremy Kasdin, Brian Kern, John Krist, Andreas Kuhnert, Michael McElwain, Bertrand Mennesson, Dwight Moody, Richard Muller, Bijan Nemati, Keith Patterson, A. J. Riggs, Daniel Ryan, Byoung-Joon Seo, Stuart Shaklan, Erkin Sidick, Fang Shi, Nicholas Siegler, Rémi Soummer, Hong Tang, John Trauger, J. Kent Wallace, Xu Wang, Victor White, Daniel Wilson, Karl Yee, Hanying Zhou, Neil Zimmerman

Proceedings Volume 9143, 91430P (2014) https://doi.org/10.1117/12.2060320

KEYWORDS: Coronagraphy, Sensors, Wavefronts, Wavefront sensors, Iterated function systems, Photomasks, Space telescopes, Exoplanets, Deformable mirrors, Planets

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Proceedings Article | 2 August 2014 Paper

Science yield estimation for AFTA coronagraphs

Wesley Traub, Ruslan Belikov, Olivier Guyon, N. Jeremy Kasdin, John Krist, Bruce Macintosh, Bertrand Mennesson, Dmitry Savransky, Michael Shao, Eugene Serabyn, John Trauger

Proceedings Volume 9143, 91430N (2014) https://doi.org/10.1117/12.2054834

KEYWORDS: Planets, Coronagraphy, Speckle, Stars, Exoplanets, Space telescopes, Infrared telescopes, Signal to noise ratio, Jupiter, Sensors

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