Mr. John S. Toeppen Profile

John S. Toeppen

Engineering Associate

SPIE Involvement:

Author

Publications (9)

Proceedings Article | 12 March 2013 Paper

Immersive stereoscopic panoramas

John Toeppen, Jason Buchheim

Proc. SPIE. 8648, Stereoscopic Displays and Applications XXIV

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

Read Abstract +

Proceedings Article | 18 February 2009 Paper

Digital stereoscopic photography using StereoData Maker

John Toeppen, David Sykes

Proc. SPIE. 7237, Stereoscopic Displays and Applications XX

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

Read Abstract +

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

Proc. SPIE. 4440, Lithographic and Micromachining Techniques for Optical Component Fabrication

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

Read Abstract +

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

Proc. SPIE. 3889, Advanced High-Power Lasers

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

Read Abstract +

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

Proc. SPIE. 3492, Third International Conference on Solid State Lasers for Application to Inertial Confinement Fusion

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

Read Abstract +

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

Proc. SPIE. 3749, 18th Congress of the International Commission for Optics

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

Read Abstract +

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

Proc. SPIE. 3047, Solid State Lasers for Application to Inertial Confinement Fusion: Second Annual International Conference

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

Read Abstract +

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

Proc. SPIE. 2633, Solid State Lasers for Application to Inertial Confinement Fusion (ICF)

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

Read Abstract +

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

Proc. SPIE. 1544, Miniature and Micro-Optics: Fabrication and System Applications

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

Read Abstract +

Showing 5 of 9 publications

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years