Mr. Alexander Klein Profile

Alexander Klein

at BAE Systems Inc

SPIE Involvement:

Author

Publications (3)

Proceedings Article | 23 August 2024 Presentation + Paper

Achieved maturation of key component-level technologies to enable large, segmented apertures in an ultra-stable optical architecture

Laura Coyle, Tyler McCracken, Laurent Pueyo, Remi Soummer, Matthew East, Jonathan Arenberg, Bob Hellekson, Todd Lawton, Marcel Bluth, James Tucker, Sang Park, Michael Eisenhower, Benjamin Cromey, Jeremy Shugrue, Joseph Ho, Jake Crouse, Alex Klein, Dustin Putnam, Brian Hicks, Randy Abbott, Bruce Hardy, Ananya Sahoo, Iva Laginja, Sean Brennan, Colin Kingsley, Vincent Tagliamonti, Vera Versteeg, David Stewart, Laurie Hill, Michael Lesczynski, Sze Chaung

Proceedings Volume 13092, 130921K (2024) https://doi.org/10.1117/12.3014539

KEYWORDS: Mirrors, Control systems, Design, Coronagraphy, Sensors, Telescopes, Optical surfaces, Deformation, Simulations, Wavefront errors

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Proceedings Article | 6 October 2023 Presentation

Broadband performance of the PAPLC coronagraph on the HiCAT testbed

Emiel Por, Raphaël Pourcelot, Ananya Sahoo, Meiji Nguyen, Bryony Nickson, Alex Klein, Peter Petrone, Iva Laginja, Laurent Pueyo, Rémi Soummer

Proceedings Volume 12680, 126801D (2023) https://doi.org/10.1117/12.2677757

KEYWORDS: Coronagraphy, Wavefront sensors, Wavefront aberrations, Telescopes, Spatial frequencies, Observatories, Wavefronts, Pupil aberrations, Point spread functions, Mirrors

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Proceedings Article | 27 August 2022 Presentation + Paper

High-contrast imager for complex aperture telescopes (HiCAT): 8. Dark zone demonstration with simultaneous closed-loop low-order wavefront sensing and control

Rémi Soummer, Emiel Por, Raphaël Pourcelot, Susan Redmond, Iva Laginja, Scott Will, Marshall Perrin, Laurent Pueyo, Ananya Sahoo, Peter Petrone, Keira Brooks, Rachel Fox, Alex Klein, Bryony Nickson, Thomas Comeau, Marc Ferrari, Rob Gontrum, John Hagopian, Lucie Leboulleux, Daniel Leongomez, Joe Lugten, Laurent Mugnier, Mamadou N'Diaye, Meiji Nguyen, James Noss, Jean-François Sauvage, Nathan Scott, Anand Sivaramakrishnan, Hari Subedi, Sam Weinstock

Proceedings Volume 12180, 1218026 (2022) https://doi.org/10.1117/12.2630444

KEYWORDS: Coronagraphy, Wavefronts, Wavefront sensors, Telescopes, Phase retrieval

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