Dr. Mala Mateen Profile

Dr. Mala Mateen

Physicist at Air Force Research Lab

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Author

Publications (13)

SPIE Journal Paper | 18 October 2022

Three-sided pyramid wavefront sensor, part II: preliminary demonstration on the new comprehensive adaptive optics and coronagraph test instrument testbed

Lauren Schatz, Johanan Codona, Joseph Long, Jared Males, Weslin Pullen, Jennifer Lumbres, Kyle Van Gorkom, Vincent Chambouleyron, Laird Close, Carlos Correia, Olivier Fauvarque, Thierry Fusco, Olivier Guyon, Michael Hart, Pierre Janin-Potiron, Robert Johnson, Nemanja Jovanovic, Mala Mateen, Jean-François Sauvage, Benoit Neichel

JATIS, Vol. 8, Issue 04, 049001, (October 2022) https://doi.org/10.1117/12.10.1117/1.JATIS.8.4.049001

KEYWORDS: Adaptive optics, Turbulence, Point spread functions, Wavefront sensors, Modulation, Cameras, Wavefronts, Mirrors, Calibration, Sensors

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Proceedings Article | 29 August 2022 Presentation

Experimental demonstration of a three-sided pyramid wavefront sensor on the CACTI testbed

Lauren Schatz, Johanan Codona, Joseph Long, Jared Males, Weslin Pullen, Kyle Van Gorkom, Vincent Chambouleyron, Laird Close, Carlos Correia, Olivier Fauvarque, Thierry Fusco, Olivier Guyon, Michael Hart, Pierre Janin-Potiron, Robert Johnson, Nemanja Jovanovic, Jennifer Lumbres, Mala Mateen, Jean-François Sauvage, Benoît Neichel

Proceedings Volume 12185, 121852D (2022) https://doi.org/10.1117/12.2629500

KEYWORDS: Wavefront sensors, Sensors, Optics manufacturing, Adaptive optics, Wavefronts, Turbulence, Telescopes, Space telescopes, Signal processing, Segmented mirrors

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SPIE Journal Paper | 13 October 2021

Three-sided pyramid wavefront sensor, part 1: simulations and analysis for astronomical adaptive optics

Lauren Schatz, Jared Males, Carlos Correia, Benoit Neichel, Vincent Chambouleyron, Johanan Codona, Olivier Fauvarque, Jean-François Sauvage, Thierry Fusco, Michael Hart, Pierre Janin-Potiron, Robert Johnson, Joseph Long, Mala Mateen

JATIS, Vol. 7, Issue 04, 049001, (October 2021) https://doi.org/10.1117/12.10.1117/1.JATIS.7.4.049001

KEYWORDS: Sensors, Wavefronts, Adaptive optics, Wavefront sensors, Modulation, Telescopes, Stars, Signal to noise ratio, Point spread functions, Fourier transforms

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The Giant Segmented Mirror Telescopes (GSMTs) including the Giant Magellan Telescope (GMT), the Thirty Meter Telescope (TMT), and the European Extremely Large Telescope (E-ELT), all have extreme adaptive optics (ExAO) instruments planned that will use pyramid wavefront sensors (PWFS). The ExAO instruments all have common features: a high-actuator-count deformable mirror running at extreme speeds (>1 kHz); a high-performance wavefront sensor (WFS); and a high-contrast coronagraph. ExAO WFS performance is currently limited by the need for high spatial sampling of the wavefront which requires large detectors. For ExAO instruments for the next generation of telescopes, alternative architectures of WFS are under consideration because there is a trade-off between detector size, speed, and noise that reduces the performance of GSMT-ExAO wavefront control. One option under consideration for a GSMT-ExAO wavefront sensor is a three-sided PWFS (3PWFS). The 3PWFS creates three copies of the telescope pupil for wavefront sensing, compared to the conventional four-sided PWFS (4PWFS), which uses four pupils. The 3PWFS uses fewer detector pixels than the 4PWFS and should therefore be less sensitive to read noise. Here we develop a mathematical formalism based on the diffraction theory description of the Foucault knife-edge test that predicts the intensity pattern after the PWFS. Our formalism allows us to calculate the intensity in the pupil images formed by the PWFS in the presence of phase errors corresponding to arbitrary Fourier modes. We use these results to motivate how we process signals from a 3PWFS. We compare the raw intensity (RI) method, and derive the Slopes Maps (SM) calculation for the 3PWFS, which combines the three pupil images of the 3PWFS to obtain the X and Y slopes of the wavefront. We then use the Object Oriented MATLAB Adaptive Optics toolbox (OOMAO) to simulate an end-to-end model of an AO system using a PWFS with modulation and compare the performance of the 3PWFS to the 4PWFS. In the case of a low read noise detector, the Strehl ratios of the 3PWFS and 4PWFS are within 0.01. When we included higher read noise in the simulation, we found a Strehl ratio gain of 0.036 for the 3PWFS using RI over the 4PWFS using SM at a stellar magnitude of 10. At the same magnitude, the 4PWFS RI also outperformed the 4PWFS SM, but the gain was only 0.012 Strehl. This is significant because 4PWFS using SM is how the PWFS is conventionally used for AO wavefront sensing. We have found that the 3PWFS is a viable WFS that can fully reconstruct a wavefront and produce a stable closed-loop with correction comparable to that of a 4PWFS, with modestly better performance for high read-noise detectors.

Proceedings Article | 13 December 2020 Presentation

A test bed to compare the performance of different wavefront sensory

Mala Mateen, Colton Bigler, Robert Johnson, Michael Oliker, Terry Brennan, Michael Hart, Johanan Codona

Proceedings Volume 11448, 114481A (2020) https://doi.org/10.1117/12.2576384

KEYWORDS: Wavefront sensors, Wavefronts, Sensors, Adaptive optics, Telescopes, Spatial resolution, Spatial frequencies, Reconstruction algorithms, Optical design

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Proceedings Article | 13 December 2020 Presentation

High contrast adaptive optics system for meter class telescopes

Mala Mateen, Odell Reynolds, Mark Eickhoff

Proceedings Volume 11448, 114487E (2020) https://doi.org/10.1117/12.2563214

KEYWORDS: Adaptive optics, Telescopes, Wavefront sensors, Cameras, Radio optics, Stars, Sensors, Switches, Optomechanical design

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Proceedings Article | 13 December 2020 Presentation

First results of laboratory tests of a three-sided pyramid wavefront sensor

Lauren Schatz, Jared Males, Johanan Codona, Weslin Pullen, Michael Hart, Jennifer Lumbres, Benoit Neichel, Carlos Correia, Thierry Fusco, Vincent Chambouleyron, Pierre Janin-Poitron, Kyle Van Gorkom, Mala Mateen, Joseph Long, Chris Bohlman, Olivier Favarque

Proceedings Volume 11448, 114481R (2020) https://doi.org/10.1117/12.2562673

KEYWORDS: Wavefront sensors, Adaptive optics, Large telescopes, Control systems, Wavefront aberrations, MATLAB, Coronagraphy, Optical testing, Wavefronts

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Proceedings Article | 18 July 2018 Paper

Monitoring the low wind effect on the Starfire Optical Range 3.5-m telescope

Mala Mateen, Jack Drummond, Robert Johnson

Proceedings Volume 10703, 107036P (2018) https://doi.org/10.1117/12.2314277

KEYWORDS: Point spread functions, Sensors, Aluminum, Telescopes, Asteroids, Wavefronts, Temperature sensors

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Proceedings Article | 17 July 2018 Paper

A fast wavefront reconstructor for the nonlinear curvature wavefront sensor

Johanan Codona, Mala Mateen, Michael Hart

Proceedings Volume 10703, 107035Q (2018) https://doi.org/10.1117/12.2313760

KEYWORDS: Scintillation, Wavefronts, Adaptive optics, Wavefront sensors, Telescopes

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Proceedings Article | 11 July 2018 Paper

A direct reconstruction technique to retrieve phase in a non-linear curvature wavefront sensor

Michael Oliker, Mala Mateen

Proceedings Volume 10703, 107035S (2018) https://doi.org/10.1117/12.2314286

KEYWORDS: Optical transfer functions, Wavefront sensors, Sensors, Fourier transforms, Raster graphics, Analytical research, Phase retrieval, Adaptive optics, Spatial frequencies, Nonlinear optics, Nonlinear image processing

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Proceedings Article | 13 September 2012 Paper

How ELTs will acquire the first spectra of rocky habitable planets

Olivier Guyon, Frantz Martinache, Eric Cady, Ruslan Belikov, Kunjithapatham Balasubramanian, Daniel Wilson, Christophe Clergeon, Mala Mateen

Proceedings Volume 8447, 84471X (2012) https://doi.org/10.1117/12.927181

KEYWORDS: Planets, Coronagraphy, Stars, Telescopes, Exoplanets, Wavefronts, Wavefront sensors, Space telescopes, Point spread functions, Adaptive optics

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Proceedings Article | 16 September 2011 Paper

A non-linear curvature wavefront sensor reconstruction speed and the broadband design

Mala Mateen, Olivier Guyon, José Sasián, Vincent Garrel, Michael Hart

Proceedings Volume 8149, 814909 (2011) https://doi.org/10.1117/12.894311

KEYWORDS: Wavefront sensors, Colorimetry, Wavefronts, Sensors, Reconstruction algorithms, Wave propagation, Spatial frequencies, Photons, Telescopes, Adaptive optics

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Proceedings Article | 22 July 2010 Paper

Results from the laboratory demonstration of the nonlinear curvature wavefront sensor

Mala Mateen, Vincent Garrel, Michael Hart, Olivier Guyon

Proceedings Volume 7736, 773619 (2010) https://doi.org/10.1117/12.857727

KEYWORDS: Wavefront sensors, Wavefronts, Spatial frequencies, Reconstruction algorithms, Wave propagation, Adaptive optics, Sensors, Stars, Wavefront reconstruction, Actuators

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Proceedings Article | 26 August 2008 Paper

Adaptive optics with the deformable mirror not in pupil: Part I. Experimental results

Mala Mateen, Darryl Sanchez, Troy Rhoadarmer, Loretta Arguella, Denis Oesch, Deborah Fung, Roger Petty, Patrick Kelly, R. Anthony Vincent, Jeff Richey

Proceedings Volume 7093, 70930A (2008) https://doi.org/10.1117/12.794845

KEYWORDS: Adaptive optics, Wavefronts, Deformable mirrors, Point spread functions, Telescopes, Mirrors, Optical design, Atmospheric sciences, Diffraction, Turbulence

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Showing 5 of 13 publications

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