Mr. John S. Toeppen Profile

John S. Toeppen

CEO

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 12 March 2013 Paper

Immersive stereoscopic panoramas

John Toeppen, Jason Buchheim

Proceedings Volume 8648, 86481F (2013) https://doi.org/10.1117/12.2008610

KEYWORDS: Panoramic photography, Cameras, Eye, Photography, Zoom lenses, Head, Image resolution, Lenses, Stereoscopic displays, 3D modeling

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Proceedings Article | 18 February 2009 Paper

Digital stereoscopic photography using StereoData Maker

John Toeppen, David Sykes

Proceedings Volume 7237, 72371C (2009) https://doi.org/10.1117/12.807422

KEYWORDS: Cameras, Photography, Digital photography, Zoom lenses, Image processing, Switches, Camera shutters, Panoramic photography, Scanning probe microscopy, Video

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Proceedings Article | 9 November 2001 Paper

Fabrication and applications of large-aperture diffractive optics

Sham Dixit, Jerald Britten, Roderick Hyde, Curly Hoaglan, Michael Rushford, Leslie Summers, John Toeppen

Proceedings Volume 4440, (2001) https://doi.org/10.1117/12.448029

KEYWORDS: Diffraction gratings, Space telescopes, Fresnel lenses, Lithography, Photoresist materials, Silica, High power lasers, Coating, Telescopes, Laser induced damage

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Proceedings Article | 3 April 2000 Paper

Wavefront control of high-power laser beams in the National Ignition Facility (NIF)

Richard Zacharias, Erlan Bliss, Scott Winters, Richard Sacks, Mark Feldman, Andrew Grey, Jeffrey Koch, Christopher Stolz, John Toeppen, Lewis Van Atta, Bruce Woods

Proceedings Volume 3889, (2000) https://doi.org/10.1117/12.380902

KEYWORDS: Wavefronts, National Ignition Facility, Control systems, Actuators, Sensors, Mirrors, High power lasers, Computing systems, Coating, Deformable mirrors

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Proceedings Article | 23 July 1999 Paper

National Ignition Facility (NIF) wavefront control system

Richard Zacharias, Erlan Bliss, Mark Feldman, Andrew Grey, Mark Henesian, Jeffrey Koch, Janice Lawson, Richard Sacks, J. Thaddeus Salmon, John Toeppen, Lewis Van Atta, Scott Winters, Bruce Woods, Carlo Lafiandra, Donald Bruns

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354181

KEYWORDS: Wavefronts, National Ignition Facility, Control systems, Sensors, Actuators, Deformable mirrors, Mirrors, Wavefront sensors, Control systems design, Near field optics

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Proceedings Article | 19 July 1999 Paper

Wavefront control system for the National Ignition Facility (NIF)

Richard Zacharias, Erlan Bliss, Mark Feldman, Andrew Grey, Jeffrey Koch, Richard Sacks, John Toeppen, Lewis Van Atta, Scott Winters, Bruce Woods

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354735

KEYWORDS: Wavefronts, National Ignition Facility, Control systems, Wavefront sensors, Control systems design, Laser applications, Optics manufacturing, Computing systems, Sensors, Interferometers

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The use of lasers as the driver for inertial confinement fusion experiments and weapons physics applications is based on their ability to produce high-energy short pulses in a beam with low divergence. Indeed, the focusability of high quality laser beams far exceeds alternate technologies and is a major factor in the rationale for building lasers for such applications The National Ignition Facility (NIF) is a large 192-beam laser facility now under construction at the Lawrence Livermore National Laboratory for fusion and weapons physics experiments. Its uncorrected focal spot minimum size is limited by wavefront aberrations in the laser system. NIF is designed with a wavefront control system to correct these aberrations to yield a focal spot that is small enough for NIF' s intended applications. Sources of aberrations to be corrected include prompt pump-induced distortions in the laser amplifiers, thermal distortions in the amplifiers from previous shots, beam off-axis effects, and gravity, mounting, and coating-induced optic distortions. Aberrations from gas density variations and manufacturing figure errors in the optics are also partially corrected by the wavefront control system. The NIF wavefront control system consists of five subsystems for each of the 192 beams: 1) a deformable mirror, 2) a wavefront sensor, 3) a computer controller, 4) a wavefront reference system, and 5) a rapid reconfiguration system to allow the wavefront control system to operate to within one second of the laser shot. The system includes the capability for in situ calibrations and operates in closed loop prior to the shot. Shot wavefront data is recorded. This paper describes the function, realization, and performance of each wavefront control subsystem. Subsystem performance will be characterized by computer models and by test results. The focal spot improvement in the NIF laser system effected by the wavefront control system will be characterized through computer models. The sensitivity of the target focal spot to various aberration sources will be presented. Analyses to optimize the wavefront control system will also be presented.

Proceedings Article | 8 December 1997 Paper

NIF pointing and centering systems and target alignment using a 351-nm laser source

Steven Boege, Erlan Bliss, Clifford Chocol, Fred Holdener, John Miller, John Toeppen, Charles Vann, Richard Zacharias

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294311

KEYWORDS: Sensors, Reticles, Mirrors, Automatic alignment, Beam shaping, Cameras, National Ignition Facility, Spatial filters, Near field, Light sources

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Proceedings Article | 8 December 1995 Paper

Adaptive optics system for solid state laser systems used in inertial confinement fusion

J. Thaddeus Salmon, Erlan Bliss, Jerry Byrd, Mark Feldman, Michael Kartz, John Toeppen, Bruno Van Wonterghem, Scott Winters

Proceedings Volume 2633, (1995) https://doi.org/10.1117/12.228319

KEYWORDS: Wavefronts, Optical amplifiers, Adaptive optics, Sensors, Deformable mirrors, National Ignition Facility, Diagnostics, Actuators, Turbulence, Frequency converters

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Proceedings Article | 1 November 1991 Paper

Video Hartmann wavefront diagnostic that incorporates a monolithic microlens array

John Toeppen, Erlan Bliss, Theresa Long, J. Thaddeus Salmon

Proceedings Volume 1544, (1991) https://doi.org/10.1117/12.49389

KEYWORDS: Sensors, Wavefronts, Video, Collimation, Optical filters, Video processing, Telescopes, Cameras, Lenses, Microlens array

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Showing 5 of 9 publications

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