Prof. William R. Donaldson Profile

Prof. William R. Donaldson

Scientist at Univ of Rochester

SPIE Involvement:

Author

Publications (28)

Proceedings Article | 15 March 2023 Poster + Paper

Metal-semiconductor-metal structured p-i-n GaN/AlGaN ultrafast detectors for deep-UV photodetection

S. Nwabunwanne, W. Donaldson

Proceedings Volume 12421, 124210O (2023) https://doi.org/10.1117/12.2648448

KEYWORDS: Ultraviolet radiation, Ultrafast phenomena, Quantum wells, Photodetectors, Platinum, Photodiodes, Fabrication, Deep ultraviolet, Design and modelling

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Proceedings Article | 5 March 2022 Poster + Paper

Interdigitated electrode geometry variation and external quantum efficiency of GaN/AlGaN-based metal-semiconductor-metal UV photodetectors

S. Nwabunwanne, W. Donaldson

Proceedings Volume 12001, 120010F (2022) https://doi.org/10.1117/12.2608355

KEYWORDS: Ultraviolet radiation, External quantum efficiency, Platinum, Palladium, Aluminum, Gold, Electrodes, Photodetectors, Ultrafast phenomena, Thin films

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Proceedings Article | 15 May 2019 Presentation + Paper

Power balancing a multibeam laser

S. Sampat, T. Kosc, K. Bauer, R. Dean, W. Donaldson, J. Kwiatkowski, R. Moshier, A. Rigatti, M. Romanofsky, L. Waxer, J. Kelly

Proceedings Volume 10898, 108980A (2019) https://doi.org/10.1117/12.2506823

KEYWORDS: Amplifiers, Fusion energy, Optical amplifiers, Diagnostics, Distortion, Visualization, Streak cameras, Laser energy, Frequency conversion, National Ignition Facility

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Proceedings Article | 4 March 2019 Paper

Co-timing UV and IR laser pulses on the OMEGA EP laser system

W. Donaldson, A. Consentino

Proceedings Volume 10898, 108980O (2019) https://doi.org/10.1117/12.2507012

KEYWORDS: Ultraviolet radiation, X-rays, Streak cameras, Picosecond phenomena, Laser systems engineering, UV optics, Pulsed laser operation

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Proceedings Article | 15 February 2018 Presentation + Paper

Power balance on a multibeam laser

S. Sampat, J. Kelly, T. Kosc, A. Rigatti, J. Kwiatkowski, W. Donaldson, M. Romanofsky, L. Waxer, R. Dean, R. Moshier

Proceedings Volume 10511, 105110P (2018) https://doi.org/10.1117/12.2288510

KEYWORDS: Amplifiers, Optical amplifiers, Calibration, Fusion energy, Crystals, Cameras, Frequency conversion, Wave plates

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Proceedings Article | 19 September 2016 Presentation + Paper

Enhancements to the timing of the OMEGA laser system to improve illumination uniformity

W. Donaldson, J. Katz, T. Kosc, J. Kelly, E. Hill, R. Bahr

Proceedings Volume 9966, 996607 (2016) https://doi.org/10.1117/12.2237053

KEYWORDS: Laser systems engineering, Diagnostics, Optical spheres, Picosecond phenomena, Ultraviolet radiation, Light scattering, Phase measurement, Optical amplifiers, Smoothing, Modulators

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Proceedings Article | 31 August 2015 Paper

3ω beam-timing diagnostic for the OMEGA laser facility

J. Katz, W. Donaldson, R. Huff, E. Hill, J. Kelly, J. Kwiatkowski, R. B. Brannon

Proceedings Volume 9591, 95910A (2015) https://doi.org/10.1117/12.2189394

KEYWORDS: Light scattering, Ultraviolet radiation, Oscilloscopes, Picosecond phenomena, Laser scattering, Scattering, Diagnostics, Diffusers, Optical spheres, Fiber amplifiers

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Proceedings Article | 26 February 2015 Paper

The multiple-pulse driver line on the OMEGA laser

T. Kosc, J. Kelly, E. Hill, C. Dorrer, L. Waxer, W. Donaldson

Proceedings Volume 9345, 93450H (2015) https://doi.org/10.1117/12.2079925

KEYWORDS: Picosecond phenomena, Optical amplifiers, Fiber amplifiers, Ultraviolet radiation, Diagnostics, Pulsed laser operation, Beam shaping, Mirrors, Laser energy, Fusion energy

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Proceedings Article | 10 September 2014 Paper

Mach-Zehnder detector system issues and enhancements for use on the National Ignition Facility DANTE x-ray diagnostic

B. Beeman, A. Carpenter, J. Kimbrough, T. Clancy, R. Chow, E. Bond, Z. Zayas-Rivera, P. Bell, J. Celeste, A. MacPhee, W. Widmann, T. Golod, E. Miller, R. Abbott, K. Lee, J. Peterson, S. Gordoni, J. Buckley, W. Donaldson

Proceedings Volume 9211, 92110E (2014) https://doi.org/10.1117/12.2063836

KEYWORDS: National Ignition Facility, Diagnostics, Semiconductor lasers, X-rays, Polarization, Fiber lasers, Servomechanisms, Sensors, X-ray detectors, Optical amplifiers

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Proceedings Article | 26 September 2013 Paper

Mach-Zehnder modulator performance on the NIF South Pole Bang Time diagnostic

B. Beeman, A. MacPhee, J. Kimbrough, R. Chow, A. Carpenter, E. Bond, Z. Zayas-Rivera, P. Bell, J. Celeste, T. Clancy, E. Miller, D. Edgell, W. Donaldson

Proceedings Volume 8850, 88500H (2013) https://doi.org/10.1117/12.2027241

KEYWORDS: National Ignition Facility, Modulators, Diagnostics, X-rays, Signal detection, Signal to noise ratio, CRTs, Phase measurement, Error analysis, Sensors

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Proceedings Article | 15 October 2012 Paper

Mach-Zehnder modulator performance using the Comet laser facility and implications for use on NIF

B. Beeman, A. MacPhee, J. Kimbrough, G. Lacaille, M. Barrios, J. Emig, J. Hunter, E. Miller, W. Donaldson

Proceedings Volume 8505, 850507 (2012) https://doi.org/10.1117/12.931436

KEYWORDS: Comets, Signal detection, National Ignition Facility, Diagnostics, Signal to noise ratio, Multiplexing, Modulators, Pulsed laser operation, Interference (communication), X-rays

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Proceedings Article | 11 May 2007 Paper

Femtosecond laser-pumped source of entangled photons for quantum cryptography applications

Dong Pan, William Donaldson, Roman Sobolewski

Proceedings Volume 6583, 65830K (2007) https://doi.org/10.1117/12.723698

KEYWORDS: Photons, Crystals, Polarization, Quantum cryptography, Femtosecond phenomena, Laser applications, Ultrafast phenomena, Silicon, Quantum key distribution, Quantum efficiency

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Proceedings Article | 17 March 2005 Paper

The streak camera development program at LLE

Paul Jaanimagi, Robert Boni, D. Butler, S. Ghosh, William Donaldson, Robert Keck

Proceedings Volume 5580, (2005) https://doi.org/10.1117/12.602565

KEYWORDS: Cameras, Calibration, Streak cameras, Imaging systems, Charge-coupled devices, Signal to noise ratio, Fiber optics, Mirrors, CCD cameras, Control systems

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Proceedings Article | 23 April 2001 Paper

Omega experiments and preparation for direct-drive ignition on NIF

Stanley Skupsky, Robert McCrory, R. Bahr, Thomas Boehly, T. Collins, Robert Craxton, J. Delettrez, William Donaldson, R. Epstein, V. Goncharov, R. Gram, D. Harding, Paul Jaanimagi, Robert Keck, James Knauer, S. Loucks, Frederic Marshall, P. McKenty, David Meyerhofer, Samuel Morse, O. Gotchev, P. Radha, Sean Regan, Wolf Seka, V. Smalyuk, John Soures, Christian Stoeckl, R. Town, M. Whitman, Barukh Yaakobi, Jonathan Zuegel, Richard Petrasso, J. Frenje, D. Hicks, C. Li, Frederick Seguin

Proceedings Volume 4424, (2001) https://doi.org/10.1117/12.425607

KEYWORDS: National Ignition Facility, Plasma, Pulsed laser operation, Cryogenics, Electrons, Laser welding, Solids, Data modeling, Terahertz radiation, Laser energy

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Proceedings Article | 23 July 1999 Paper

Transient bandwidth analysis of photoconductive microwave switches implemented in the OMEGA pulse shaping system

Kenton Green, William Donaldson, Robert Keck, Andrey Okishev, Mark Skeldon, Wolf Seka, Roman Sobolewski

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354228

KEYWORDS: Switches, Microwave radiation, Modulation, Laser energy, Linear filtering, Modulators, Electro optical modeling, Pulse shaping, Integrated optics, Electrooptic modulators

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Proceedings Article | 23 June 1999 Paper

UV power balance on the OMEGA laser

William Donaldson, Robert Boni, Robert Keck, Paul Jaanimagi

Proceedings Volume 3609, (1999) https://doi.org/10.1117/12.351049

KEYWORDS: Optical amplifiers, Fusion energy, Ultraviolet radiation, Streak cameras, Crystals, Pulsed laser operation, Beam shaping, Picosecond phenomena, Laser energy, Laser systems engineering

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Proceedings Article | 12 April 1996 Paper

Pulse-shaping system for the 60-beam, 30-kJ (UV) OMEGA laser

Andrey Okishev, Mark Skeldon, Samuel Letzring, William Donaldson, Andrei Babushkin, Wolf Seka

Proceedings Volume 2770, (1996) https://doi.org/10.1117/12.238034

KEYWORDS: Switches, Modulators, Silicon, Pulsed laser operation, Picosecond phenomena, Spatial light modulators, Optical amplifiers, Signal processing, Ultraviolet radiation, UV optics

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Proceedings Article | 8 December 1995 Paper

Transient microwave bandwidth measurements of illuminated silicon switches for optical pulse-shape control of laser-fusion drivers

Kenton Green, William Donaldson, Roman Sobolewski, Andrey Okishev, Mark Skeldon, Samuel Letzring, Wolf Seka

Proceedings Volume 2633, (1995) https://doi.org/10.1117/12.228269

KEYWORDS: Switches, Microwave radiation, Signal attenuation, Silicon, Signal detection, Sensors, Pulsed laser operation, Pulse generators, Network security, Semiconductor lasers

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Proceedings Article | 4 January 1995 Paper

Energy extraction from superconducting magnets using optically activated YBa2Cu3O7-x switches

Deepnarayan Gupta, William Donaldson, Alan Kadin

Proceedings Volume 2343, (1995) https://doi.org/10.1117/12.198652

KEYWORDS: Switches, Superconductors, Magnetism, Chemical oxygen iodine lasers, Switching, Thin films, Laser energy, Pulsed laser operation, Liquids, Copper

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Proceedings Article | 4 January 1995 Paper

Optically activated switches for the generation of complex electrical waveforms with multigigahertz bandwidth

Mark Skeldon, Andrey Okishev, Samuel Letzring, William Donaldson, Kenton Green, Wolf Seka, Lynn Fuller

Proceedings Volume 2343, (1995) https://doi.org/10.1117/12.198647

KEYWORDS: Switches, Silicon, Modulators, Pulsed laser operation, Laser energy, Picosecond phenomena, Laser scattering, Switching, Signal processing, Copper

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Proceedings Article | 4 January 1995 Paper

Electromagnetic wave interaction with laser-induced plasmas in GaAs

Liyue Mu, William Donaldson, Jeff Adams, R. Aaron Falk

Proceedings Volume 2343, (1995) https://doi.org/10.1117/12.198649

KEYWORDS: Plasmas, Gallium arsenide, Microwave radiation, Ionization, Electromagnetic radiation, Wavefronts, Picosecond phenomena, Doppler effect, Pulsed laser operation, Laser energy

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Proceedings Article | 9 June 1993 Paper

Transmission-line modeling of photoconductive switches

William Donaldson, Liyue Mu

Proceedings Volume 1873, (1993) https://doi.org/10.1117/12.146545

KEYWORDS: Switches, Switching, Electro optical modeling, Picosecond phenomena, Electro optics, Semiconductors, Semiconductor lasers, Gallium arsenide, Imaging systems, Capacitors

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Proceedings Article | 9 June 1993 Paper

Fast optically triggered superconducting opening switches

Deepnarayan Gupta, William Donaldson, Alan Kadin

Proceedings Volume 1873, (1993) https://doi.org/10.1117/12.146538

KEYWORDS: Switches, Superconductors, Switching, Chemical oxygen iodine lasers, Magnetism, Thin films, Transformers, Pulsed laser operation, Picosecond phenomena, Inductance

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Proceedings Article | 12 May 1992 Paper

Effects of doping on photoconductive switches as determined by electro-optic imaging

William Donaldson, Liyue Mu

Proceedings Volume 1632, (1992) https://doi.org/10.1117/12.59060

KEYWORDS: Switches, Electro optics, Gallium arsenide, Doping, Switching, Electro optical imaging, Crystals, Electro optical modeling, Imaging systems, Electrodes

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Proceedings Article | 12 May 1992 Paper

Optically activated opening switches

Deepnarayan Gupta, William Donaldson, Krista Kortkamp, Alan Kadin

Proceedings Volume 1632, (1992) https://doi.org/10.1117/12.59070

KEYWORDS: Switches, Switching, Superconductors, Thin films, Resistance, Bridges, Resistors, Nd:YAG lasers, Temperature metrology, Thermography

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Proceedings Article | 1 March 1991 Paper

Optical probing of field dependent effects in GaAs photoconductive switches

William Donaldson, Lawrence Kingsley

Proceedings Volume 1378, (1991) https://doi.org/10.1117/12.25057

KEYWORDS: Switches, Gallium arsenide, Switching, Electro optics, Electrodes, Crystals, Electro optical modeling, Semiconductors, Picosecond phenomena, Laser beam diagnostics

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