Mr. Donald A. Byrd Profile

Donald A. Byrd

at BAE Systems Inc

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 26 August 2009 Paper

Optical testing of the Kepler Photometer in a thermal vacuum environment at Ball Aerospace

Mark Martella, Don Byrd, Stew Willis, Peter Spuhler, Noah Siegel, Chris Stewart

Proceedings Volume 7436, 74360S (2009) https://doi.org/10.1117/12.830008

KEYWORDS: Aerospace engineering, Wavefronts, Photometry, Collimators, Optical testing, Space telescopes, Telescopes, Stars, Mirrors, Collimation

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Proceedings Article | 27 December 2001 Paper

Final results of the Subscale Beryllium Mirror Demonstrator (SBMD)program

Timothy Reed, Stephen Kendrick, Robert Brown, James Hadaway, Donald Byrd

Proceedings Volume 4451, (2001) https://doi.org/10.1117/12.453614

KEYWORDS: Mirrors, Beryllium, Cryogenics, Surface finishing, Polishing, Spherical lenses, Monochromatic aberrations, Actuators, Optical fabrication, Wavefronts

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Proceedings Article | 27 December 2001 Paper

Cryogenic optical testing results for the Subscale Beryllium Mirror Demonstrator (SBMD)

James Hadaway, Joseph Geary, Patrick Reardon, Bruce Peters, H. Philip Stahl, Ron Eng, John Keidel, Jeffrey Kegley, Timothy Reed, Donald Byrd

Proceedings Volume 4451, (2001) https://doi.org/10.1117/12.453625

KEYWORDS: Mirrors, Cryogenics, Photovoltaics, Optical testing, Monochromatic aberrations, Beryllium, Temperature metrology, Error analysis, Space telescopes, Wavefront sensors

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Proceedings Article | 6 March 2001 Paper

Design and test of semirigid beryllium mirrors for lightweighted space applications: SBMD cryogenic performance update and AMSD design approach

Stephen Kendrick, Timothy Reed, Scott Streetman, Donald Byrd, James Hadaway

Proceedings Volume 4198, (2001) https://doi.org/10.1117/12.417345

KEYWORDS: Mirrors, Cryogenics, Beryllium, Space mirrors, Surface finishing, Spherical lenses, Actuators, Polishing, Space telescopes, Wavefront sensors

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Proceedings Article | 27 October 1999 Paper

Multispectral Thermal Imager optical assembly performance and integration of the flight focal plane assembly

Tammy Henson, Leslie Krumel, Richard Blake, Steven Bender, Donald Byrd, R. Wynn Christensen, William Rappoport, GonYen Shen

Proceedings Volume 3753, (1999) https://doi.org/10.1117/12.366298

KEYWORDS: Staring arrays, Mirrors, Calibration, Optical fabrication, Sensors, Imaging systems, Visible radiation, Black bodies, Multispectral imaging, Thermography

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Proceedings Article | 27 October 1999 Paper

Multispectral Thermal Imager (MTI) payload overview

R. Rex Kay, Steven Bender, Tammy Henson, Donald Byrd, Jeffrey Rienstra, Max Decker, N Rackley, Ronald Akau, John Claassen, Ronald Kidner, Richard Taplin, David Bullington, Kevin Marbach, Chris Lanes, Cynthia Little, Barham Smith, Brian Brock, Paul Weber

Proceedings Volume 3753, (1999) https://doi.org/10.1117/12.366297

KEYWORDS: Calibration, Satellites, Staring arrays, Imaging systems, Electronics, Sensors, Thermography, Satellite imaging, Telescopes, Image compression

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Proceedings Article | 20 October 1998 Paper

Vacuum-compatible standard diffuse source, manufacture, and calibration

Donald Byrd, William Atkins, Steven Bender, R. Wynn Christensen, Francis Michaud

Proceedings Volume 3428, (1998) https://doi.org/10.1117/12.327962

KEYWORDS: Calibration, Optical spheres, Lamps, Integrating spheres, Satellites, Nitrogen, Sensors, Manufacturing, Spectral calibration, Silicon

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Los Alamos National Laboratories has completed the design, manufacture and calibration of a vacuum-compatible, tungsten lamp, integrating sphere. The light source has been calibrated at the National Institute of Standards and Technology and is intended for use as a calibration standard for remote sensing instrumentation. Calibration 2(sigma) uncertainty varied with wavelength from 1.21% at 400 nm and 0.73% at 900 nm, to 3.95% at 2400 nm. The inner radius of the Spectralon-coated sphere is 21.2 cm with a 7.4 cm square exit aperture. A small satellite sphere is attached to the main sphere and its output coupled through a stepper motor driven aperture. The variable aperture allows a constant radiance without effecting the color temperature output from the main sphere. The sphere's output is transmitted into a vacuum test environment through a fused silica window that is an integral part of the outer housing of the vacuum shell assembly. The atmosphere within this outer housing is composed of 240 degree(s)K nitrogen gas, provided by a custom LN₂ vaporizer unit. Use of the nitrogen gas maintains the internal temperature of the sphere at a nominal 300 degree(s)K +/- 10 degree(s). The calibrated spectral range of the source is 0.4 micrometers through 2.4 micrometers . Three, color temperature matched, 20 W bulbs together with a 10 W bulb are within the main integrating sphere. Two 20 W bulbs, also color temperature matched, reside in the satellite integrating sphere. A silicon and a germanium broadband detector are situated within the inner surface of the main sphere. Their purpose is for the measurement of the internal broadband irradiance. A fiber-optic-coupled spectrometer measures the internal color temperature that is maintained by current control on the lamps. Each lamp is independently operated allowing for radiances with common color temperatures ranging from near 0.026 W/cm²/sr to about 0.1 W/cm²/sr at a wavelength of 0.9 micrometers (the location of the peak spectral radiance).

Proceedings Article | 3 October 1998 Paper

Optical assembly of a visible-through-thermal infrared multispectral imaging system

Tammy Henson, Steven Bender, Donald Byrd, William Rappoport, GonYen Shen

Proceedings Volume 3439, (1998) https://doi.org/10.1117/12.325614

KEYWORDS: Calibration, Mirrors, Optical fabrication, Telescopes, Wavefronts, Infrared radiation, Staring arrays, Black bodies, Imaging systems, Sensors

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Proceedings Article | 10 June 1996 Paper

Design, manufacture, and calibration of infrared radiometric blackbody sources

Donald Byrd, Francis Michaud, Steven Bender, A. Luettgen, Redus Holland, William Atkins, Thomas O'Brian, Steven Lorentz

Proceedings Volume 2743, (1996) https://doi.org/10.1117/12.241963

KEYWORDS: Black bodies, Sensors, Calibration, Lead, Infrared radiation, Liquids, Cryogenics, Control systems, Design for manufacturability, Manufacturing

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Proceedings Article | 14 September 1994 Paper

Visible/infrared radiometric calibration station

Donald Byrd, William Maier, Steven Bender, Redus Holland, Francis Michaud, Allen Luetthgen, R. Wynn Christensen, Thomas O'Brian

Proceedings Volume 2268, (1994) https://doi.org/10.1117/12.185852

KEYWORDS: Calibration, Sensors, Collimators, Black bodies, Interferometers, Optical spheres, Monochromators, Collimation, Integrating spheres, Infrared sensors

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Los Alamos National Laboratories has begun construction of a visible/infrared radiometric calibration station that will allow for absolute calibration of optical and IR remote sensing instruments with clear apertures less than 16 inches in diameter in a vacuum environment. The calibration station broadband sources will be calibrated at the National Institute of Standards and Technology (NIST) and allow for traceable absolute radiometric calibration to within +/- 3% in the visible and near IR (0.4-2.5 micrometers ), and less than +/- 1% in the infrared, up to 12 micrometers . Capabilities for placing diffraction limited images of for sensor full-field flooding will exist. The facility will also include the calibration of polarization and spectra effects, spatial resolution, field of view performance, and wavefront characterization. The configuration of the vacuum calibration station consists of an off-axis 21 inch, f/3.2, parabolic collimator with a scanning fold flat in collimated space. The sources are placed, via mechanisms to be described, at the focal plane of the off-axis parabola. Vacuum system pressure will be in the 10^-6 Torr range. The broadband white-light source is a custom design by LANL with guidance from Labsphere Inc. The continuous operating radiance of the integrating sphere will be from 0.0-0.006 W/cm²/Sr/micrometers (upper level quoted for approximately 500 nm wavelength). The blackbody source is also custom designed at LANL with guidance from NIST. The blackbody temperature will be controllable between 250-350 degree(s)K. Both of the above sources have 4.1 inch apertures with estimated radiometric instability at less than 1%. The designs of each of these units will be described. The monochromator and interferometer light sources are outside the vacuum, but all optical relay and beam shaping optics are enclosed within the vacuum calibration station. These sources are to be described, as well as the methodology for alignment and characterization.

Proceedings Article | 16 September 1993 Paper

Designs for optical components related to the Los Alamos free-electron laser

Donald Byrd, Steven Bender

Proceedings Volume 1998, (1993) https://doi.org/10.1117/12.156626

KEYWORDS: Free electron lasers, Spectroscopy, Silicon, Sensors, Scanning electron microscopy, Optical design, Signal attenuation, Relays, Resonators, Optical diagnostics

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Proceedings Article | 13 August 1993 Paper

Design and manufacture of optical system for use in ultraviolet lithography with the free-electron laser

Donald Byrd, Vriddhachalam Viswanathan, Gregg Woodfin, William Horn, Vito Lazazzera, Rodney Schmell

Proceedings Volume 1868, (1993) https://doi.org/10.1117/12.150634

KEYWORDS: Ultraviolet radiation, Reflectivity, Telescopes, UV optics, Lithography, Relays, Free electron lasers, Resonators, Optics manufacturing, Photomasks

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Proceedings Article | 13 August 1993 Paper

Experiments in sideband suppression on the Los Alamos National Laboratory free-electron laser

Cheryl White, M. Coyle, Alan Paxton, Patrick O'Shea, Steven Bender, Donald Byrd, Donald Feldman, John Goldstein, Eric Pitcher, Thomas Zaugg

Proceedings Volume 1868, (1993) https://doi.org/10.1117/12.150635

KEYWORDS: Mirrors, Free electron lasers, Resonators, Spherical lenses, Electron beams, Oscillators, Energy efficiency, Spatial filters, Computer simulations, Laser applications

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Showing 5 of 13 publications

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