Mr. John M. Edwards Profile

John M. Edwards

at RTX Corp

SPIE Involvement:

Author

Publications (4)

Proceedings Article | 31 May 2012 Paper

Advances in ladar components and subsystems at Raytheon

James Neisz, Robert Rinker, John Edwards, Tom Roberts, T. Dean Cook, Cliff Andressen, Shane Jacobson, Donald N. Hall, George Chapman, Tricia Veeder, Farzin Amzajerdian, Michael Jack, Justin Wehner, William Mc Keag, Tom Robinson

Proceedings Volume 8353, 83532F (2012) https://doi.org/10.1117/12.923683

KEYWORDS: Avalanche photodetectors, LIDAR, Sensors, Readout integrated circuits, Mercury cadmium telluride, Photon counting, Signal detection, Receivers, Pulsed laser operation, Silicon

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Proceedings Article | 6 July 2011 Paper

HgCdTe APD-based linear-mode photon counting components and ladar receivers

George Chapman, Donald Hall, Michael Jack, Shane Jacobson, Justin Wehner, John Edwards

Proceedings Volume 8033, 80330M (2011) https://doi.org/10.1117/12.888134

KEYWORDS: Avalanche photodetectors, Photon counting, Sensors, Mercury cadmium telluride, Readout integrated circuits, Signal detection, Electrons, LIDAR, Single photon, Ionization

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Proceedings Article | 26 August 2010 Paper

High-performance large format impurity band conductor focal plane arrays for astronomy applications

Elizabeth Corrales, John Edwards, Andrew Toth, Gert Finger, Jeff Kissel, Eric Beuville, Robert Mills, Neil Therrien

Proceedings Volume 7780, 778003 (2010) https://doi.org/10.1117/12.862264

KEYWORDS: Sensors, Astronomy, Quantum efficiency, Readout integrated circuits, Staring arrays, Space telescopes, Nondestructive evaluation, James Webb Space Telescope, Semiconducting wafers, Infrared sensors

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Raytheon Vision Systems (RVS) has developed a family of high performance large format infrared detector arrays whose detectors are most effective for the detection of long and very long wavelength infrared energy. This paper describes the state of the art in mega-pixel Si:As Impurity Band Conduction (IBC) arrays and relevant system applications that offers unique off-the-shelf solutions to the astronomy community. Raytheon's Aquarius-1k, developed in collaboration with ESO, is a 1024 × 1024 pixel high performance array with a 30μm pitch that features high quantum efficiency IBC detectors, low noise, low dark current, and on-chip clocking for ease of operation. This large format array was designed for ground-based astronomy applications but lends itself for space based platforms too. The detector has excellent sensitivity out to 27μm wavelength. The readout circuit has several programmable features such as low gain for a well capacity of 11 × 10⁶e-, high gain for a well capacity of 10⁶e- and a programmable number of outputs (16 or 64). Programmable integration time and integration modes, like snapshot, rolling and non-destructive integrations, allow the Aquarius to be used for a wide variety of applications and performance. A very fast full frame rate of 120Hz is achieved with 64 outputs (32 outputs per side) and a programmable centered windowing will accommodate a wide range of readout rates. The multiplexer and packaging design utilizes two alignment edges on the SCA which can be butted on two sides for expansion to 2k × 1k and wider focal planes. Data is shown on several focal plane arrays to demonstrate that very low noise and high quantum efficiency performance has been achieved. This array leverages over thirty years of experience in both ground and space based astronomy sensor applications. The technology has been successfully demonstrated on programs such as NASA's Spitzer Space Telescope and Japan's Akari Space Telescope, and will be used on the Mid-Infrared Instrument (MIRI) aboard the James Webb Space Telescope (JWST).

Proceedings Article | 8 December 2003 Paper

Two-color HgCdTe infrared staring focal plane arrays

Paul Goetz, John Edwards, John Jensen, Michael Newton, Gregory Venzor, Edward Smith, Le Pham, Brett Nosho, Ken Kosai, Stefan Baur, Elizabeth Patten, John Roth, Scott Johnson, Gregory Pierce, William Radford, Elyse Norton, Raymond Coussa, Randolph Longshore, Valerie Randall

Proceedings Volume 5209, (2003) https://doi.org/10.1117/12.507811

KEYWORDS: Staring arrays, Sensors, Mercury cadmium telluride, Long wavelength infrared, Infrared radiation, Mid-IR, Semiconducting wafers, Infrared detectors, Quantum efficiency, Etching

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