Dr. Phillip K. Poon Profile

Dr. Phillip K. Poon

at Jet Propulsion Lab

SPIE Involvement:

Author

Publications (14)

SPIE Journal Paper | 18 July 2024

Comparative laboratory study of electric field conjugation algorithms

Niyati Desai, Axel Potier, Susan Redmond, Garreth Ruane, Phillip Poon, A. J. Eldorado Riggs, Matthew Noyes, Camilo Mejia Prada

JATIS, Vol. 10, Issue 03, 035001, (July 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.3.035001

KEYWORDS: Coronagraphy, Electric fields, Scalable video coding, Model based design, Wavefront sensors, Cameras, Spiral phase plates, Wavefronts, Design, Space telescopes

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Proceedings Article | 5 October 2023 Presentation + Paper

The decadal survey testbed two: a technology development facility for future exo-Earth observatories

Matthew Noyes, Alex Walter, Greg Allan, Garreth Ruane, Eduardo Bendek, Phillip Poon, Camilo Meija Prada, A.J. El Dorado Riggs, Hong Tang, Seth Meeker

Proceedings Volume 12680, 1268017 (2023) https://doi.org/10.1117/12.2676452

KEYWORDS: Coronagraphy, Cameras, Wavefronts, Wavefront sensors, Point spread functions, Electric fields, Vacuum, Thermal stability, Mirrors

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Due to the reporting from the Astro2020: Decadal Survey for Astronomy and Astrophysics, the direct imaging of Earth-like exoplanets has become a leading priority for research and development in astrophysics. In response to this survey, NASA has selected the Habitable Worlds Observatory (HWO) as its next astrophysics flagship mission. However, the current state-of-the-art coronagraph technology is not sufficient to achieve the required contrast (approximately 10⁻¹⁰) with HWO’s proposed configuration. Improving the technology readiness level of coronagraphs for HWO will require extensive research and development. To increase its capacity to support this objective and to provide the community with a new resource to perform versatile coronagraph technology development, NASA’s High Contrast Imaging Testbed (HCIT) facility at the Jet Propulsion Laboratory (JPL) has commissioned the Decadal Survey Testbed 2 (DST2), a state-of-the-art vacuum coronagraph testbed. It’s commissioned architecture incorporates a 2K-actuator Boston Micromachines deformable mirror and a traditional Lyot coronagraph and features a flexible design capable of accommodating different coronagraph technologies including tip/tilt mirrors, segmented apertures, reflective pupils, disturbance injection, wavefront sensing and control, and the integration of additional sources or telescope simulators with minimal reconfiguration. DST2 has repeatably achieved 1 × 10⁻⁹ monochromatic raw contrast, and 3.3 × 10⁻⁹ raw contrast in a 10% bandwidth centered at 550nm in a 180 degree dark hole from 3λ/D to 9λ/D. Additionally, DST2 uses new 20-bit DM electronics capable of a 650 femtometer DM actuator resolution which meets future requirements for HWO. As of August 2023, DST2 has begun operations to meet scientific milestones set by the principal investigators of NASA Strategic Astrophysics Technologies awards. Parallel to these priorities, work to determine contrast limitations will be performed.

Proceedings Article | 5 October 2023 Presentation + Paper

Demonstration of coronagraph technology for high-contrast point spectroscopy of ExoEarths

Greg Allan, Garreth Ruane, Alex Walter, A. J. Riggs, Camilo Mejia Prada, Matthew Noyes, Phillip Poon, Jorge Llop-Sayson, Nemanja Jovanovic, Carl Coker, Christopher Stark, Bertrand Mennesson, Dimitri Mawet

Proceedings Volume 12680, 1268019 (2023) https://doi.org/10.1117/12.2676876

KEYWORDS: Coronagraphy, Planets, Spectroscopy, Electric fields, Calibration, Actuators, Stars, Measurement uncertainty, Equipment, Cameras

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Proceedings Article | 5 October 2023 Presentation + Paper

Experimental demonstration of spectral linear dark field control at NASA’s high contrast imaging testbeds

Phillip Poon, Axel Potier, Garreth Ruane, Alex Walter, A. J. Eldorado Riggs, Matthew Noyes, Camilo Mejia Prada, Kyohoon Ahn, Olivier Guyon

Proceedings Volume 12680, 126801G (2023) https://doi.org/10.1117/12.2677806

KEYWORDS: Coronagraphy, Calibration, Matrices, Wavefront sensors, Cameras, Actuators, Stars, Wavefronts, Wavefront errors, Singular value decomposition

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Proceedings Article | 5 October 2023 Presentation + Paper

Experimental comparison of model-free and model-based dark hole algorithms for future space telescopes

Niyati Desai, Axel Potier, Garreth Ruane, Phillip Poon, A. J. Riggs, Matthew Noyes, Camilo Mejia Prada

Proceedings Volume 12680, 1268015 (2023) https://doi.org/10.1117/12.2677040

KEYWORDS: Coronagraphy, Wavefront sensors, Space telescopes, Planets

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SPIE Journal Paper | 24 May 2023 Open Access

Random vibration testing of microelectromechanical deformable mirrors for space-based high-contrast imaging

Axel Potier, Camilo Mejia Prada, Garreth Ruane, Hong Tang, Wesley Baxter, Duncan Liu, A. J. Eldorado Riggs, Phillip K. Poon, Eduardo Bendek, Nick Siegler, Mary Soria, Mark Hetzel, Charlie Lam, Paul Bierden

JATIS, Vol. 9, Issue 02, 029001, (May 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.9.2.029001

KEYWORDS: Actuators, Microelectromechanical systems, Vibration, Deformation, Coronagraphy, Connectors, Inspection, Exoplanets, Deformable mirrors, Equipment

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Proceedings Article | 29 August 2022 Poster

Update on the survivability of high-actuator-count MEMS deformable mirror to rocket launch.

Axel Potier, Garreth Ruane, Camilo Mejia Prada, Wesley Baxter, Duncan Liu, Hong Tang, A.J. Eldorado Riggs, Phillip Poon, Eduardo Bendek, Nick Siegler, Mary Soria, Mark Hetzel, Charlie Lam, Paul Bierden

Proceedings Volume 12180, 121805S (2022) https://doi.org/10.1117/12.2629915

KEYWORDS: Microelectromechanical systems, Deformable mirrors, Rockets, Exoplanets, Coronagraphy, Wavefronts, Reliability, Manufacturing, Astrophysics, Astronomy

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Proceedings Article | 27 August 2022 Poster + Paper

High-contrast demonstration of a vector vortex coronagraph with a segmented, off-axis aperture

A.J. Eldorado Riggs, Garreth Ruane, Eugene Serabyn, Wesley Baxter, Jorge Llop-Sayson, Camilo Mejia Prada, Dimitri Mawet, Matthew Noyes, Phillip Poon, Nelson Tabiryan

Proceedings Volume 12180, 121805I (2022) https://doi.org/10.1117/12.2630130

KEYWORDS: Coronagraphy, Wavefronts, Polarization, Exoplanets, Diffraction, Wave plates, Observatories, Deformable mirrors

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Proceedings Article | 27 August 2022 Presentation + Paper

Broadband vector vortex coronagraph testing at NASA’s high contrast imaging testbed facility

Garreth Ruane, A. J. Eldorado Riggs, Eugene Serabyn, Wesley Baxter, Camilo Mejia Prada, Dimitri Mawet, Matthew Noyes, Phillip Poon, Nelson Tabiryan

Proceedings Volume 12180, 1218024 (2022) https://doi.org/10.1117/12.2628972

KEYWORDS: Coronagraphy, Exoplanets

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Proceedings Article | 1 September 2021 Presentation + Paper

Deriving deformable mirror performance requirements in simulation

Phillip Poon, A. J. Eldorado Riggs, Garreth Ruane, Eduardo Bendek, Camilo Mejia Prada, Matthew Noyes, Santos Fregoso, Dean Palmer

Proceedings Volume 11823, 118230L (2021) https://doi.org/10.1117/12.2594742

KEYWORDS: Actuators, Electronics, Coronagraphy, Deformable mirrors, Wavefront sensors, Wavefronts

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Proceedings Article | 1 September 2021 Presentation + Paper

The Twin decadal survey testbeds in the high contrast imaging testbed facility at NASA’s jet propulsion laboratory

Seth Meeker, Matthew Noyes, Hong Tang, Garreth Ruane, Camilo Mejia Prada, Eduardo Bendek, Wesley Baxter, Brendan Crill, A. J. Eldorado Riggs, Phillip Poon, Nicholas Siegler

Proceedings Volume 11823, 118230Y (2021) https://doi.org/10.1117/12.2594668

KEYWORDS: Coronagraphy, Wavefronts, Exoplanets, Data modeling, Microelectromechanical systems, Wavefront sensors

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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 | 19 May 2016 Paper

Computational hyperspectral unmixing using the AFSSI-C

Phillip Poon, Esteban Vera, Michael Gehm

Proceedings Volume 9870, 987003 (2016) https://doi.org/10.1117/12.2223193

KEYWORDS: Imaging spectroscopy, Signal to noise ratio, Organic light emitting diodes, Digital micromirror devices, Light emitting diodes, LED displays, Multiplexing, Staring arrays, Imaging devices, Error analysis

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Proceedings Article | 3 May 2012 Paper

A static architecture for compressive target tracking

Phillip Poon, Daniel Townsend, Scott Wehrwein, Esteban Vera, Michael Stenner, Michael Gehm

Proceedings Volume 8360, 83600G (2012) https://doi.org/10.1117/12.918878

KEYWORDS: Sensors, Point spread functions, Compressed sensing, Spatial light modulators, Micromirrors, Reconstruction algorithms, Data storage, Calibration, Data communications, Telecommunications

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Showing 5 of 14 publications

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