Mr. David J. Gulbransen Profile

David J. Gulbransen

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Publications (10)

Proceedings Article | 22 July 2008 Paper

Teledyne Imaging Sensors: infrared imaging technologies for astronomy and civil space

James Beletic, Richard Blank, David Gulbransen, Donald Lee, Markus Loose, Eric Piquette, Thomas Sprafke, William Tennant, Majid Zandian, Joseph Zino

Proceedings Volume 7021, 70210H (2008) https://doi.org/10.1117/12.790382

KEYWORDS: Mercury cadmium telluride, Sensors, Readout integrated circuits, Astronomy, Staring arrays, Infrared imaging, Optical sensors, Infrared sensors, Quantum efficiency, Electrons

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Proceedings Article | 7 July 2006 Paper

Illuminating dark energy with the joint efficient dark-energy investigation (JEDI)

Edward Cheng, Yun Wang, Edward Baron, David Branch, Stefano Casertano, Arlin Crotts, Helmuth Drosdat, Luke Dubord, Robert Egerman, Peter Garnavich, David Gulbransen, Alexander Kutyrev, John MacKenty, John Miles, Leonidas Moustakas, Mark Phillips, Thomas Roellig, Robert Silverberg, Gordon Squires, J. Craig Wheeler, Edward Wright

Proceedings Volume 6265, 626529 (2006) https://doi.org/10.1117/12.669446

KEYWORDS: Imaging spectroscopy, Galactic astronomy, Baryon acoustic oscillations, Spectroscopy, Space telescopes, Telescopes, Sensors, Space operations, Spectroscopes, Infrared radiation

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Proceedings Article | 14 June 2006 Paper

Astronomy FPA advancements at Rockwell Scientific

Tom Chuh, Markus Loose, David Gulbransen, Selmer Wong Anglin, James Beletic, Eric Piquette, James Garnett

Proceedings Volume 6265, 62652K (2006) https://doi.org/10.1117/12.671813

KEYWORDS: Staring arrays, Sensors, James Webb Space Telescope, Astronomy, Quantum efficiency, Space telescopes, Near infrared, Readout integrated circuits, Infrared sensors, Mercury cadmium telluride

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Proceedings Article | 29 September 2004 Paper

2K X 2K HgCdTe detector arrays for VISTA and other applications

Peter Love, Alan Hoffman, Ken Ando, Elizabeth Corrales, William Ritchie, Neil Therrien, Joseph Rosbeck, Roger Holcombe, David Gulbransen

Proceedings Volume 5499, (2004) https://doi.org/10.1117/12.555225

KEYWORDS: Sensors, Quantum efficiency, Readout integrated circuits, Mercury cadmium telluride, Antireflective coatings, Near infrared, K band, Visible radiation, Astronomy, Short wave infrared radiation

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Proceedings Article | 30 August 2004 Paper

Wide-FOV FPAs for a shipboard distributed aperture system

David Gulbransen, Stephen Black, A. Childs, Christopher Fletcher, Scott Johnson, William Radford, Gregory Venzor, J. Sienicki, A. Thompson, J. Griffith, Aimee Buell, M. Vilela, Michael Newton, Edward Takken, James Waterman, Keith Krapels

Proceedings Volume 5406, (2004) https://doi.org/10.1117/12.555122

KEYWORDS: Staring arrays, Sensors, Semiconducting wafers, Electronics, Detector arrays, Mid-IR, Mercury cadmium telluride, Silicon, Cameras, Interfaces

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Proceedings Article | 12 January 2004 Paper

Large-format 0.85- to 2.5-um HgCdTe detector arrays for low-background applications

Peter Love, Alan Hoffman, David Gulbransen, Mark Murray, Ken Ando, Neil Therrien, Joseph Rosbeck, Roger Holcombe

Proceedings Volume 5167, (2004) https://doi.org/10.1117/12.506258

KEYWORDS: Sensors, Readout integrated circuits, Mercury cadmium telluride, Antireflective coatings, Near infrared, Electrons, Cadmium sulfide, Silicon, Quantum efficiency, Astronomy

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Proceedings Article | 7 March 2003 Paper

Megapixel and larger readouts and FPAs for visible and infrared astronomy

David Gulbransen, Peter Love, Mark Murray, Nancy Lum, Christopher Fletcher, Elizabeth Corrales, Robert Mills, Alan Hoffman, Ken Ando

Proceedings Volume 4841, (2003) https://doi.org/10.1117/12.459851

KEYWORDS: Sensors, Silicon, Mercury cadmium telluride, Astronomy, Staring arrays, Semiconducting wafers, Visible radiation, Infrared astronomy, Short wave infrared radiation, Readout integrated circuits

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Proceedings Article | 17 July 2000 Paper

Overview of advances in high-performance ROIC designs for use with IRFPAs

Leonard Chen, Mary Hewitt, David Gulbransen, Kevin Pettijohn, Bryan Chen, Richard Wyles

Proceedings Volume 4028, (2000) https://doi.org/10.1117/12.391724

KEYWORDS: Readout integrated circuits, Staring arrays, Sensors, Signal processing, Digital electronics, Filtering (signal processing), Spatial filters, Standard readout integrated circuits, Signal detection, Analog electronics

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Proceedings Article | 1 July 1992 Paper

Infrared readout integrated circuit technology for tactical missile systems

Nicholas Doudoumopoulos, David Gulbransen, J. Kojiro, A. Cosand, Colin Whitney, Richard Wyles, David Murphy, Stephen Black

Proceedings Volume 1684, (1992) https://doi.org/10.1117/12.60509

KEYWORDS: Readout integrated circuits, Sensors, Missiles, Electronics, Lithium, Mercury cadmium telluride, Infrared radiation, Long wavelength infrared, Multiplexers, Infrared ROIC

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Proceedings Article | 29 January 1992 Paper

Producible high performace LWIR pv HgGdTe staring focal plane arrays

D. Gulbransen

Proceedings Volume 2075, 207509 (1992) https://doi.org/10.1117/12.2300237

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In the last two years, Hughes Aircraft Company and the Santa Barbara Research Center have demonstrated that LWIR PV HgCdTe staring focal plane arrays can be fabricated reproducibly with high performance and high yield. Record yields for detectors and readouts, in excess of 50%, have been achieved on 128 x 128 arrays with 40 x 40 gm pixels on 40 jam centers. Key to the successes are the development of p-on-n PV HgCdTe detector technology and high density CMOS readout circuitry. In 1988, Hughes Missile Systems Group established an inventory account whose goal was to fabricate 128 x 128 LWIR FPAs for a broad range of missile requirements. They range from high background tactical applications to low background SDI scenarios. The staring FPA chosen couples a high impedance p-on-n LWIR PV HgCdTe detector array to a CMOS high capacity direct injection readout array and is designated the DI-128. The detector arrays were fabricated with cutoff wavelengths ranging from 9.2 to 9.9 gm and with RoAo products ranging from 100 to 1000 S2-cm2. The excellent RoAo products allow a simple direct injection input circuit to be used while maintaining injection efficiencies in excess of 80% allowing near BLIP performance. The DI input circuit has a charge handling capacity in excess of 20 million carriers. A variable integration time capability is provided for dynamic range management and performance optimization. 39 LWIR HgCdTe FPAs have been fabricated by the inventory account to date with a yield of nearly 50 %. The arrays were tested at 77 Kelvin with an f/2.0 aperture at 295 Kelvin in the 8.0-9.0 gm spectral band resulting in a background flux of 6.0 x 1015 photons/cm2-sec. The array average NEAT achieved was typically in the range 0.025 to 0.020 Kelvin. Excellent dc and ac uniformities of 4-6% were universally observed. The yielded FPAs all had greater than 98.5% operability with many parts achieving greater than 99.5%. Additional tests were performed to determine if the LWIR detectors could be used in the MWIR. The NEAT achieved in these tests was approximately 0.025 Kelvin. the outstanding detector RoAo products achieved at SF RC reduce the leakage current sufficiently to achieve this performance level in the MWIR. The excellent MWIR performance opens the possibility of simultaneous MWIR and LWIR imagery using a single LWIR staring FPA.

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