Dr. Pin Chen Profile

Dr. Pin Chen

at Jet Propulsion Lab

SPIE Involvement:

Conference Program Committee | Author

Publications (16)

SPIE Journal Paper | 20 September 2024 Open Access

Open Access

Current laboratory performance of starlight suppression systems and potential pathways to desired Habitable Worlds Observatory exoplanet science capabilities

Bertrand Mennesson, Ruslan Belikov, Emiel Por, Eugene Serabyn, Garreth Ruane, A. J. Eldorado Riggs, Dan Sirbu, Laurent Pueyo, Rémi Soummer, Jeremy Kasdin, Stuart Shaklan, Byoung-Joon Seo, Christopher Stark, Eric Cady, Pin Chen, Brendan Crill, Kevin Fogarty, Alexandra Greenbaum, Olivier Guyon, Roser Juanola-Parramon, Brian Kern, John Krist, Bruce Macintosh, David Marx, Dimitri Mawet, Camilo Mejia Prada, Rhonda Morgan, Bijan Nemati, Leonid Pogorelyuk, Susan Redmond, Sara Seager, Nicholas Siegler, Karl Stapelfeldt, Sarah Steiger, John Trauger, James Wallace, Marie Ygouf, Neil Zimmerman

JATIS, Vol. 10, Issue 03, 035004, (September 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.3.035004

KEYWORDS: Coronagraphy, Planets, Signal to noise ratio, Telescopes, Point spread functions, Stars, Exoplanets, Wavefronts, Spectroscopy, Design

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We summarize the current best polychromatic (∼10% to 20% bandwidth) contrast performance demonstrated in the laboratory by different starlight suppression approaches and systems designed to directly characterize exoplanets around nearby stars. We present results obtained by internal coronagraph and external starshade experimental testbeds using entrance apertures equivalent to off-axis or on-axis telescopes, either monolithic or segmented. For a given angular separation and spectral bandwidth, the performance of each starlight suppression system is characterized by the values of “raw” contrast (before image processing), off-axis (exoplanet) core throughput, and post-calibration contrast (the final 1-sigma detection limit of off-axis point sources, after image processing). Together, the first two parameters set the minimum exposure time required for observations of exoplanets at a given signal-to-noise, i.e., assuming perfect subtraction of background residuals down to the photon noise limit. In practice, residual starlight speckle fluctuations during the exposure will not be perfectly estimated nor subtracted, resulting in a finite post-calibrated contrast and exoplanet detection limit whatever the exposure time. To place the current laboratory results in the perspective of the future Habitable Worlds Observatory (HWO) mission, we simulate visible observations of a fiducial Earth/Sun twin system at 12 pc, assuming a 6 m (inscribed diameter) collecting aperture and a realistic end-to-end optical throughput. The exposure times required for broadband exo-Earth detection (20% bandwidth around λ=0.55 μm) and visible spectroscopic observations (R=70) are then computed assuming various levels of starlight suppression performance, including the values currently demonstrated in the laboratory. Using spectroscopic exposure time as a simple metric, our results point to key starlight suppression system design performance improvements and trades to be conducted in support of HWO’s exoplanet science capabilities. These trades may be explored via numerical studies, lab experiments, and high-contrast space-based observations and demonstrations.

Proceedings Article | 26 August 2024 Presentation + Paper

Presentation + Paper

Linking strategic astrophysics missions, technology gaps, and technology maturation investments

Opher Ganel, Pin Chen, Brendan Crill, Jason Derleth, Omid Noroozian, Mario Perez, Rachel Rivera, Nicholas Siegler

Proceedings Volume 13100, 131002Z (2024) https://doi.org/10.1117/12.3018403

KEYWORDS: Coronagraphy, Astrophysics, X-rays, Ultraviolet detectors, X-ray technology, Sensors, X-ray optics, X-ray detectors, CMOS sensors, Image sensors, Far infrared

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Proceedings Article | 24 August 2024 Presentation

Presentation

A coronagraph technology roadmap for future space observatories to directly image Earth-like exoplanets

Pin Chen, Laurent Pueyo, Nicholas Siegler

Proceedings Volume 13092, 130921J (2024) https://doi.org/10.1117/12.3018022

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Proceedings Article | 23 August 2024 Poster + Paper

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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Proceedings Article | 23 August 2024 Presentation + Paper

Presentation + Paper

Simulated performance of energy-resolving detectors towards exoplanet imaging with the Habitable Worlds Observatory

Sarah Steiger, Laurent Pueyo, Emiel Por, Pin Chen, Rémi Soummer, Raphaël Pourcelot, Iva Laginja, Vanessa Bailey

Proceedings Volume 13092, 130921W (2024) https://doi.org/10.1117/12.3020603

KEYWORDS: Electron multiplying charge coupled devices, Sensors, Observatories, Superconductors, Simulations, Coronagraphy

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Proceedings Article | 5 October 2023 Poster + Paper

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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SPIE Journal Paper | 23 September 2022 Open Access

Open Access

Adaptive optics performance of a simulated coronagraph instrument on a large, segmented space telescope in steady state

Axel Potier, Garreth Ruane, Chris Stark, Pin Chen, Ankur Chopra, Larry Dewell, Roser Juanola-Parramon, Alison Nordt, Laurent Pueyo, David Redding, A J Eldorado Riggs, Dan Sirbu

JATIS, Vol. 8, Issue 03, 035002, (September 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.3.035002

KEYWORDS: Adaptive optics, Coronagraphy, Telescopes, Wavefronts, Stars, Device simulation, Wavefront sensors, Equipment, Optical path differences, Wavefront errors

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Proceedings Article | 27 August 2022 Poster + Paper

Poster + Paper

Contrast performance of an 8m off-axis, segmented space telescope equipped with an adaptive optics system

Axel Potier, Garreth Ruane, Kiarash Tajdaran, Chris Stark, Pin Chen, Larry Dewell, Roser Juanola-Parramon, Alison Nordt, Laurent Pueyo, A.J. Eldorado Riggs, David Redding, Dan Sirbu

Proceedings Volume 12180, 121805D (2022) https://doi.org/10.1117/12.2629902

KEYWORDS: Coronagraphy, Adaptive optics, Telescopes, Stars, Image segmentation, Wavefront sensors, Space telescopes, Performance modeling, Wavefronts, Mirrors

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Proceedings Article | 3 September 2021 Presentation + Paper

Presentation + Paper

LUVOIR-ECLIPS closed-loop adaptive optics performance and contrast predictions

Axel Potier, Garreth Ruane, Pin Chen, Ankur Chopra, Larry Dewell, Roser Juanola Parramon, Alison Nordt, Laurent Pueyo, David Redding, AJ Eldorado Riggs, Dan Sirbu

Proceedings Volume 11823, 118231L (2021) https://doi.org/10.1117/12.2595116

KEYWORDS: Adaptive optics, Wavefronts, Wavefront sensors, Telescopes, Principal component analysis, Coronagraphy, Exoplanets

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SPIE Journal Paper | 9 November 2020

Wavefront sensing and control in space-based coronagraph instruments using Zernike’s phase-contrast method

Garreth Ruane, James Kent Wallace, John Steeves, Camilo Mejia Prada, Byoung-Joon Seo, Eduardo Bendek, Carl Coker, Pin Chen, Brendan Crill, Jeff Jewell, Brian Kern, David Marx, Phillip Poon, David Redding, A. J. Eldorado Riggs, Nicholas Siegler, Robert Zimmer

JATIS, Vol. 6, Issue 04, 045005, (November 2020) https://doi.org/10.1117/12.10.1117/1.JATIS.6.4.045005

KEYWORDS: Coronagraphy, Wavefronts, Stars, Actuators, Wavefront sensors, Space telescopes, Cameras, Equipment, Wavefront errors, Wavefront aberrations

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Proceedings Article | 21 September 2012 Paper

Paper

Coronagraphic imaging of debris disks from a high altitude balloon platform

Stephen Unwin, Wesley Traub, Geoffrey Bryden, Paul Brugarolas, Pin Chen, Olivier Guyon, Lynn Hillenbrand, John Krist, Bruce Macintosh, Dimitri Mawet, Bertrand Mennesson, Dwight Moody, Lewis Roberts, Karl Stapelfeldt, David Stuchlik, John Trauger, Gautam Vasisht

Proceedings Volume 8442, 84420G (2012) https://doi.org/10.1117/12.924175

KEYWORDS: Coronagraphy, Telescopes, Stars, Planets, Space telescopes, Wavefronts, Sensors, Wavefront sensors, Planetary systems, Solar system

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Proceedings Article | 15 September 2011 Paper

Paper

Zodiac II: debris disk science from a balloon

Geoffrey Bryden, Wesley Traub, Lewis Roberts, Robin Bruno, Stephen Unwin, Stan Backovsky, Paul Brugarolas, Supriya Chakrabarti, Pin Chen, Lynne Hillenbrand, John Krist, Charles Lillie, Bruce Macintosh, Dimitri Mawet, Bertrand Mennesson, Dwight Moody, Zahidul Rahman, Justin Rey, Karl Stapelfeldt, David Stuchlik, John Trauger, Gautam Vaischt

Proceedings Volume 8151, 81511E (2011) https://doi.org/10.1117/12.899688

KEYWORDS: Telescopes, Stars, Coronagraphy, Space telescopes, Planets, Mirrors, Wavefronts, Signal to noise ratio, Deformable mirrors, Speckle

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Proceedings Article | 15 July 2010 Paper

Paper

NESSI: the New Mexico Tech Extrasolar Spectroscopic Survey Instrument

C. Jurgenson, F. Santoro, M. Creech-Eakman, K. Houairi, H. Bloemhard, G. Vasisht, M. Swain, P. Deroo, C. Moore, L. Schmidt, P. Boston, D. Rodeheffer, P. Chen

Proceedings Volume 7735, 773519 (2010) https://doi.org/10.1117/12.856514

KEYWORDS: Telescopes, Exoplanets, Spectrographs, Space telescopes, Infrared telescopes, Magdalena Ridge Observatory, Sensors, Prisms, Spectroscopes, Calibration

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Proceedings Article | 14 July 2008 Paper

Paper

Planetscope: an exoplanet coronagraph on a balloon platform

Wesley Traub, Pin Chen, Brian Kern, Taro Matsuo

Proceedings Volume 7010, 70103S (2008) https://doi.org/10.1117/12.788087

KEYWORDS: Coronagraphy, Wavefronts, Exoplanets, Turbulence, Lithium, Point spread functions, Interferometers, Telescopes, Wavefront aberrations, Personal protective equipment

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Proceedings Article | 17 February 2003 Paper

Paper

Photomixer systems as submillimeter oscillators and coherent test sources

John Pearson, Pin Chen, Herbert Pickett

Proceedings Volume 4855, (2003) https://doi.org/10.1117/12.459378

KEYWORDS: Oscillators, Terahertz radiation, Heterodyning, Sensors, Astronomy, Receivers, Calibration, Laser applications, Antennas

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Proceedings Article | 29 April 1999 Paper

Paper

Two-frequency MOPA diode laser system for difference-frequency generation of coherent THz waves

Shuji Matsuura, Pin Chen, Geoffrey Blake, John Pearson, Herbert Pickett

Proceedings Volume 3617, (1999) https://doi.org/10.1117/12.347126

KEYWORDS: Terahertz radiation, Semiconductor lasers, Optical amplifiers, Laser systems engineering, Tunable lasers, Microwave radiation, Oscillators, Spectroscopy, Calibration, Ferroelectric materials

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Showing 5 of 16 publications

Conference Committee Involvement (1)

Space Telescopes and Instrumentation 2024: Optical, Infrared, and Millimeter Wave

16 June 2024 | Yokohama, Japan

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