Zobrazeno 1 - 10
of 14
pro vyhledávání: '"Stephen Gaalema"'
Publikováno v:
Infrared Sensors, Devices, and Applications III.
Readout integrated circuits (ROICs) to support space-based infrared detection applications often have severe radiation tolerance requirements. Radiation hardness-by-design (RHBD) significantly enhances the radiation tolerance of commercially availabl
Autor:
L Lim, T G Rose, John P. Doty, L. R. Cominsky, Benjamin Malphrus, Kevin Brown, K. Prasad, T T Turba, J G Jeringan, R T Kroll, Matthew Wampler-Doty, D C Graves, S Anderson, R McNeil, Michael Combs, M M Powell, Stephen Gaalema, B L Molton, B J Cahall, J F Fitzpatrick, E T Thomas, Lance M. Simms, Shunming Sun, J. Kruth
Publikováno v:
Hard X-Ray, Gamma-Ray, and Neutron Detector Physics XIV.
A precise measurement of the Cosmic X-ray Background (CXB) is crucial for constraining models of the evolution and composition of the universe. While several large, expensive satellites have measured the CXB as a secondary mission, there is still dis
Autor:
Stephen Gaalema, Gary M. Stuart, Ping Yuan, Stephen Van Duyne, Eduardo Labios, Xiaogang Bai, Bryan Morris, Harrison Danny, Rengarajan Sudharsanan, Paul McDonald, J. Nicholson, Greg Pauls
Publikováno v:
SPIE Proceedings.
Three-dimensional (3D) topographic imaging using Short wavelength infrared (SWIR) Laser Detection and Range (LADAR) systems have been successfully demonstrated on various platforms. LADAR imaging provides coverage down to inch-level fidelity and allo
Autor:
Stephen Gaalema, Paul McDonald, Gary M. Stuart, Harrison Danny, Rengarajan Sudharsanan, Greg Pauls, Eduardo Labios, J. Nicholson, Ping Yuan, Xiaogang Bai, Stephen Van Duyne, Bryan Morris, Joseph Boisvert
Publikováno v:
Laser Radar Technology and Applications XVI.
The performance of Geiger-mode LAser Detection and Ranging (LADAR) cameras is primarily defined by individual pixel attributes, such as dark count rate (DCR), photon detection efficiency (PDE), jitter, and crosstalk. However, for the expanding LADAR
Autor:
James Chang, Paul McDonald, Harrison Danny, Rengarajan Sudharsanan, Joseph Boisvert, Stephen Gaalema, J. Nicholson, Greg Pauls, Gary M. Stuart, Xiaogang Bai, Ping Yuan, Bryan Morris, Eduardo Labios, Stephen Van Duyne
Publikováno v:
Imaging and Applied Optics.
Boeing Spectrolab has demonstrated 3D imaging using single photon Geiger-mode cameras operating at 1060 nm wavelength. In this conference we will present status of detector array performance, camera design and performance, and 3D imaging data.
Publikováno v:
Detectors and Imaging Devices: Infrared, Focal Plane, Single Photon.
The NASA Jupiter Europa Orbiter (JEO) conceptual payload contains a thermal instrument with six different spectral bands ranging from 8µm to 100 m. The thermal instrument is based on multiple linear arrays of thermopile detectors that are intrinsica
Autor:
James L. Gates, Stephen Downey, Philip Kaaret, Scott MacIntosh, Bruce Wall, J. Garrett Jernigan, Shunming Sun, Brian D. Ramsey, Stephen Gaalema
Publikováno v:
SPIE Proceedings.
We report on progress to develop and demonstrate CZT and Si hybrid detector arrays for future NASA missions in X-ray and Gamma-ray astronomy. The primary goal for these detectors is consistent with the design concept for the EXIST mission1 and will a
Autor:
Ping Yuan, Alric B. Roybal, Michael S. Salisbury, Greg Pauls, Joseph Boisvert, Stephen Gaalema, Xiaogang Bai, Eduardo Labios, Harrison Danny, Rengarajan Sudharsanan, Angel A. Portillo, Gary M. Stuart, Stephen Van Duyne, Paul McDonald
Publikováno v:
Laser Radar Technology and Applications XV.
For the wide applications of LAser Detection and Ranging (LADAR) imaging with large format Geiger-mode (GM) avalanche photodiode (APD) arrays, it is critical and challenging to develop a LADAR camera suitable to volume production with enough componen
Multi-modal miniaturized microscope: successful merger of optical, MEMS, and electronic technologies
Autor:
Jeremy D. Rogers, Rebecca Richards-Kortum, Mohammed Rahman, Stephen Gaalema, Eustace L. Dereniak, Todd C. Christenson, Michael R. Descour, Tomasz S. Tkaczyk
Publikováno v:
SPIE Proceedings.
The multi-modal miniature microscope (4M) device for early cancer detection is based on micro-optical table (MOT) platform which accommodates on a chip: optical, micro-mechanical, and electronic components. The MOT is a zeroalignment optical-system c
Multi-modal miniature microscope: 4M Device for bio-imaging applications - an overview of the system
Autor:
Stephen Gaalema, Rebecca Richards-Kortum, Tomasz S. Tkaczyk, Mohammed Rahman, Eustace L. Dereniak, Todd C. Christenson, Jeremy D. Rogers, Michael R. Descour
Publikováno v:
SPIE Proceedings.
The multi-modal miniature microscope (4M) device to image morphology and cytochemistry in vivo is a microscope on a chip including optical, micro-mechanical, and electronic components. This paper describes all major system components: optical system,