Dr. Andrew M. Siegel Profile

Dr. Andrew M. Siegel

Staff Scientist at MIT Lincoln Lab

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Author

Publications (13)

Proceedings Article | 29 April 2009 Paper

Deep UV photon-counting detectors and applications

Gary Shaw, Andrew Siegel, Joshua Model, Adam Geboff, Stanislav Soloviev, Alexey Vert, Peter Sandvik

Proceedings Volume 7320, 73200J (2009) https://doi.org/10.1117/12.820825

KEYWORDS: Sensors, Avalanche photodetectors, Silicon carbide, Deep ultraviolet, Quenching (fluorescence), Quantum efficiency, Photodetectors, Ultraviolet radiation, Optical filters, Silicon

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Proceedings Article | 2 May 2006 Paper

Extending the range and performance of non-line-of-sight ultraviolet communication links

Gary Shaw, Andrew Siegel, Joshua Model

Proceedings Volume 6231, 62310C (2006) https://doi.org/10.1117/12.666194

KEYWORDS: Sensors, Ultraviolet radiation, Non-line-of-sight propagation, Scattering, Semiconductors, Absorption filters, Light emitting diodes, Optical filters, Quantum efficiency, Receivers

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Proceedings Article | 27 May 2005 Paper

Recent progress in short-range ultraviolet communication

Gary Shaw, Andrew Siegel, Joshua Model, Daniel Greisokh

Proceedings Volume 5796, (2005) https://doi.org/10.1117/12.603196

KEYWORDS: Ultraviolet radiation, Non-line-of-sight propagation, Sensors, Receivers, Avalanche photodetectors, Transmitters, Signal detection, Light emitting diodes, Scattering, Modulation

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Proceedings Article | 20 October 2004 Paper

Short-range communication with ultraviolet LEDs

Andrew Siegel, Gary Shaw, Joshua Model

Proceedings Volume 5530, (2004) https://doi.org/10.1117/12.582112

KEYWORDS: Non-line-of-sight propagation, Ultraviolet radiation, Scattering, Sensors, Signal attenuation, Atmospheric propagation, Light emitting diodes, Optical communications, Semiconductors, Ultraviolet sources

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Proceedings Article | 1 September 2004 Paper

Field testing and evaluation of a solar-blind UV communication link for unattended ground sensors

Gary Shaw, Andrew Siegel, Joshua Model, Melissa Nischan

Proceedings Volume 5417, (2004) https://doi.org/10.1117/12.543152

KEYWORDS: Ultraviolet radiation, Non-line-of-sight propagation, Modulation, Sensors, Signal detection, Lamps, Scattering, Receivers, Semiconductors, Mercury

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Proceedings Article | 22 September 2003 Paper

Demonstration system and applications for compact wireless ultraviolet communications

Gary Shaw, Andrew Siegel, Melissa Nischan

Proceedings Volume 5071, (2003) https://doi.org/10.1117/12.500861

KEYWORDS: Ultraviolet radiation, Sensors, Non-line-of-sight propagation, Scattering, Telecommunications, Semiconductors, Transmitters, Absorption, Photons, Aerosols

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Proceedings Article | 29 June 2001 Paper

Rapid multispectral cw multiplexing technique for photon migration measurements

Andrew Siegel, David Boas

Proceedings Volume 4250, (2001) https://doi.org/10.1117/12.434489

KEYWORDS: Sensors, Multiplexing, Fused deposition modeling, Time division multiplexing, Signal to noise ratio, Signal detection, Hemodynamics, Absorption, Interference (communication), Signal attenuation

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SPIE Journal Paper | 1 October 2000 Open Access

Trans-abdominal monitoring of fetal arterial blood oxygenation using pulse oximetry

Anna Zourabian, Andrew Siegel, Britton Chance, Nirmala Ramanujam, Martha Rode, David Boas

JBO, Vol. 5, Issue 04, (October 2000) https://doi.org/10.1117/12.10.1117/1.1289359

KEYWORDS: Signal detection, Blood, Oxygen, Absorption, Oximetry, Tissue optics, Scattering, Tissues, Heart, Fetus

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Proceedings Article | 15 July 1999 Paper

Noninvasive transabdominal monitoring of fetal cerebral oxygenation using pulse oximetry

Anna Zourabian, Andrew Siegel, Nirmala Ramanujam, Britton Chance, David Boas, Gargi Vishnoi, Re-Gine Choe

Proceedings Volume 3597, (1999) https://doi.org/10.1117/12.356783

KEYWORDS: Signal detection, Oximetry, Heart, Sensors, Oxygen, Blood, Tissues, Tissue optics, Arteries, Fetus

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Proceedings Article | 15 July 1999 Paper

Diffuse optical tomography of rat brain function

Andrew Siegel, John Marota, Joseph Mandeville, Bruce Rosen, David Boas

Proceedings Volume 3597, (1999) https://doi.org/10.1117/12.356815

KEYWORDS: Sensors, Signal detection, Tissue optics, Brain, Modulation, Imaging systems, Prototyping, Neuroimaging, Blood, Functional magnetic resonance imaging

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Proceedings Article | 15 July 1999 Paper

Bedside functional imaging of the premature infant brain during passive motor activation

Susan Hintz, David Benaron, Andrew Siegel, Anna Zourabian, David Boas

Proceedings Volume 3597, (1999) https://doi.org/10.1117/12.356811

KEYWORDS: Functional imaging, Brain, Neuroimaging, Sensors, Imaging systems, Single photon emission computed tomography, Optical fibers, Absorbance, Blood circulation, Oxygen

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Proceedings Article | 26 June 1996 Paper

Focal plane performance for the AIRS instrument

James Stobie, James Garnett, Eric Krueger, Andrew Siegel, James Rutter

Proceedings Volume 2745, (1996) https://doi.org/10.1117/12.243532

KEYWORDS: Sensors, Readout integrated circuits, Mid-IR, Photovoltaics, Capacitance, Infrared radiation, Long wavelength infrared, Medium wave, Quantum efficiency, Mercury cadmium telluride

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Higher resolution and wider IR spectral coverage is needed to improved infrared sounding instruments. The Atmospheric Infrared Sounder (AIRS), chosen by NASA to fly on the Earth Observing System, addresses these needs with advanced PV HgCdTe detector arrays designed to cover the spectral range from 3.7 micrometers to 13.6 micrometers with an average resolution of (lambda) /(Delta) (lambda) equals 1200. High performance detectors and advanced readout integrated circuit electronics make it possible to meet mission requirements. For convenience, the AIRS focal plane has been partitioned into four MWIR modules spanning the spectral range from 3.7 micrometers to 8.22 micrometers , and six LWIR modules for wavelengths above 8.8 micrometers . This paper focuses on the AIRS readout device and recent developments in p-on-n heterojunction detector technology at Loral. The detector arrays, operating at 60 K, readily satisfies the requirements of the AIRS instrument. Detector arrays with 4.7 micrometers cutoff wavelength at 60 K and 20 mV reverse bias have RdAs typically greater than 10¹⁰ (Omega) (DOT) cm², with dark signals less than 0.6 fA and detector capacitances less than 0.6 pf for a 50 micrometers by 10 micrometers detector. AR coated MW arrays exhibit quantum efficiencies of greater than 80 percent. Reverse breakdowns are more than -150 mV. Module data for 15.1 micrometers detectors with anti-reflection coating exhibit quantum efficiencies greater than 70 percent and dark currents less than 8 nanoamps at 20 mV reverse bias. Also, excellent module linearity meeting the AIRS stringent requirements is achieved. Of course, measurements of MW detectors require extremely high gain transimpedance amplifiers. The AIRS MWIR readout structures prove to be exceptional in their ability to characterize these high impedance detectors. The charge sensitive input amplifiers on these readout devices utilize an equivalent input integration capacitor of less than 10 fFd to achieve ultrahigh transimpedance gain, and reset noise is suppressed with on focal plane correlated double sampling. LWIR readouts use ultralow noise buffered direct injection preamplifiers. The readouts have a robust architectures with differential input and outputs to minimize EMI and built in redundancy for survivability. Description of the readout device is presented, as well as linearity measurements of both the readout and complete modules.

Proceedings Article | 1 December 1991 Paper

Dual-band optical system for IR multicolor signal processing

Paulette Kimball, James Fraser, Jeffrey Johnson, Andrew Siegel

Proceedings Volume 1540, (1991) https://doi.org/10.1117/12.48775

KEYWORDS: Sensors, Imaging systems, Infrared imaging, Cameras, Long wavelength infrared, Video, Mid-IR, Infrared radiation, Infrared sensors, Calibration

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Showing 5 of 13 publications

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