Alexander B. Walter
Jet Propulsion Laboratory
12 Papers
10 Citations
Alexander B. Walter is an academic researcher from Jet Propulsion Laboratory. The author has contributed to research in topics: Detector & Nanowire. The author has an hindex of 3, co-authored 6 publications. Previous affiliations of Alexander B. Walter include California Institute of Technology.
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Papers
The MKID Exoplanet Camera for Subaru SCExAO
Alexander B. Walter,Neelay Fruitwala,Sarah Steiger,John I. Bailey,Nicholas Zobrist,Noah Swimmer,Isabel Lipartito,Jennifer Pearl Smith,Seth R. Meeker,Clint Bockstiegel,Gregoire Coiffard,Rupert Dodkins,Paul Szypryt,Paul Szypryt,Kristina K. Davis,Miguel Daal,Bruce Bumble,Giulia Collura,Olivier Guyon,Julien Lozi,Sébastien Vievard,Nemanja Jovanovic,Frantz Martinache,Thayne Currie,Thayne Currie,Benjamin A. Mazin +25 more
TL;DR: The MKID Exoplanet Camera (MEC) as mentioned in this paper is the first permanently deployed near-infrared MKID instrument and is designed to operate both as an IFU, and as a focal plane wavefront sensor in a multi-kHz feedback loop with SCExAO.
Recent advances in superconducting nanowire single-photon detector technology for exoplanet transit spectroscopy in the mid-infrared
Emma E. Wollman,Varun B. Verma,Alexander B. Walter,Jeff Chiles,Boris Korzh,J. P. Allmaras,Yao Zhai,Yao Zhai,Adriana E. Lita,Adam N. McCaughan,Ekkehart Schmidt,Simone Frasca,Simone Frasca,Richard P. Mirin,Sae Woo Nam,Matthew D. Shaw +15 more
TL;DR: In this article, the authors report on the progress and outlook toward developing arrays of ultrastable superconducting nanowire single-photon detectors for mid-IR astronomy applications.
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The MKID Exoplanet Camera for Subaru SCExAO
Alexander B. Walter,Neelay Fruitwala,Sarah Steiger,John I. Bailey,Nicholas Zobrist,Noah Swimmer,Isabel Lipartito,Jennifer Pearl Smith,Seth R. Meeker,Clint Bockstiegel,Gregoire Coiffard,Rupert Dodkins,Paul Szypryt,Paul Szypryt,Kristina K. Davis,Miguel Daal,Bruce Bumble,Giulia Collura,Olivier Guyon,Julien Lozi,Sébastien Vievard,Nemanja Jovanovic,Frantz Martinache,Thayne Currie,Thayne Currie,Benjamin A. Mazin +25 more
TL;DR: The MKID Exoplanet Camera (MEC) as mentioned in this paper is the first permanently deployed near-infrared MKID instrument and is designed to operate both as an IFU, and as a focal plane wavefront sensor in a multi-kHz feedback loop with SCExAO.
Large-Area Superconducting Nanowire Single-Photon Detectors for Operation at Wavelengths up to 7.4 μm.
Marco Colangelo,Alexander B. Walter,Boris Korzh,Ekkehart Schmidt,Bruce Bumble,Adriana E. Lita,Andrew D. Beyer,Jason P. Allmaras,Ryan M. Briggs,A. G. Kozorezov,Emma E. Wollman,Matthew D. Shaw,Karl K. Berggren +12 more
TL;DR: In this article , the authors improved the sensitivity of superconducting materials and optimized a high-resolution nanofabrication process to demonstrate large-area SNSPDs with unity internal detection efficiency (IDE) up to 7.4 μm.
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Low-noise single-photon countingsuperconducting nanowire detectors at infraredwavelengths up to 29 µm
Gregor G. Taylor,Alexander B. Walter,Boris Korzh,Bruce Bumble,Sahil R. Patel,Jason P. Allmaras,Andrew D. Beyer,Roger O'Brient,Matthew D. Shaw,Emma E. Wollman +9 more
TL;DR: Single-photon detectors at 29 µm extend the spectral sensitivity of superconducting nanowire detectors to a new wavelength range, enabling low-noise and high-timing-resolution photon counting detection.
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