Dr. R Edward English Jr Profile

Dr. R Edward English Jr

Principal at REE Optical Systems LLC

SPIE Involvement:

Author

Area of Expertise:

Optical System Design , Diffraction Theory , Physical Optics Phenomena , Projection Displays , High Power Laser Beam Delivery , Infrared Sensors

Websites:

Company Website

Profile Summary

As a consultant, I am available to provide expertise, perspective and system design for Optics and Product Development.
I am pursuing a new direction as high school Teacher in math and physics

I have technical experience and expertise in ...
data analysis • problem solving • root cause understanding • math & statistics
optical system design • diffraction theory • physical optics phenomenon
projection displays • high power lasers • optical sensors and controls

Significant experiences have taught me leadership skills applicable to ...
design and project teams • multi-disciplinary technical organizations • customer interface and technical liaison • organizational development and re-alignment • change management • engineering processes • decision-making across organizational boundaries • project management • competitive intelligence & IP

Publications (21)

Proceedings Article | 9 September 2015 Paper

Paper

The beam rotation that almost was in the National Ignition Facility

R. English

Proceedings Volume 9583, 95830D (2015) https://doi.org/10.1117/12.2196559

KEYWORDS: Computer aided design, Mirrors, National Ignition Facility, Optical design, Solid modeling, Lead, Spherical lenses, Frequency conversion, Crystals, Mechanical engineering

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Proceedings Article | 18 August 2005 Paper

Paper

Multicolor edge function computation

Simon Magarill, Ed English, Boris Ardashnikov

Proceedings Volume 5867, 586703 (2005) https://doi.org/10.1117/12.615290

KEYWORDS: Image quality, Visualization, CRTs, Software development, Lenses, Image analysis, Projection systems, Light emitting diodes, Point spread functions, Thulium

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SPIE Journal Paper | 1 July 2000

Design of optical systems with both near-field and far-field system requirements

David Wang, David Aikens, R. Edward English

OE, Vol. 39, Issue 07, (July 2000) https://doi.org/10.1117/12.10.1117/1.602558

KEYWORDS: Optical design, Monochromatic aberrations, Chemical elements, Telescopes, Zoom lenses, Wavefronts, Distortion, Space telescopes, Near field, Near field optics

Proceedings Article | 11 November 1999 Paper

Paper

Implementation of ISO 10110 optics drawing standards for the National Ignition Facility

David Wang, R. Edward English, David Aikens

Proceedings Volume 3782, (1999) https://doi.org/10.1117/12.369230

KEYWORDS: Standards development, National Ignition Facility, Optics manufacturing, Glasses, Birefringence, Laser systems engineering, Tolerancing, Astronomical imaging, Optical components, Optical communications

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Proceedings Article | 11 November 1999 Paper

Paper

Surface figure and roughness tolerances for NIF optics and the interpretation of the gradient, P-V wavefront, and RMS specifications

Janice Lawson, David Aikens, R. Edward English, Wayne Whistler, Will House, Michael Nichols

Proceedings Volume 3782, (1999) https://doi.org/10.1117/12.369231

KEYWORDS: Wavefronts, National Ignition Facility, Laser systems engineering, Spatial filters, Optical testing, Optical components, Linear filtering, Optics manufacturing, Tolerancing, Spatial frequencies

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In a high energy laser system such as the National Ignition Facility (NIF), the ability to focus light into as small a spot as possible at the highest possible fluence is highly dependent on the quality of the optics used in the system. Typically, surface form errors and transmitted and reflected wavefront errors are specified in terms of a peak-to-valley wavefront error (P-V), or occasionally in terms of an RMS wavefront error (RMS). It has been shown, however, that the parameter that most closely correlates with beam focusability is neither of these, but the RMS of the gradients of the wavefront error (RMS Gradient). Further, the spatial frequency of the wavefront error plays a significant role in the way that a given error effects the performance of the laser system, so careful attention must be paid to how the spatial filtering is both specified an accomplished. Since ISO 10110 has no specific provisions for a gradient specification, LLNL has developed its own notation and procedures for these critical specifications. In evaluating surface figure errors as specified by the NIF drawings, modern phase modulating interferometers (PMI) will be used. In addition to performing QA testing of the optics, LLNL intends to utilize the software capabilities of the instruments to obtain the information to model the wavefront of the 131 passes through various optical elements comprising the NIF 'front end.' A typical transmitted wavefront error call-out for an optic in the front end is: (lambda) /8 P-V, (lambda) /40 RMS, (lambda) /30/ cm RMS gradient, with these values evaluated for spatial periods greater than 2 mm only. Test will be performed and documented after coating and as installed in the specified mechanical mounts. This paper describes the evaluation of the wavefront error for NIF small optics including specifications over a given spatial period call-out, the proper low pass filtering of the data and the allowable filtering and settings that can be applied to obtain proper wavefront data. This paper also describes the origin and evolution of other NIF wavefront and roughness specifications, and gives examples. Since the wavefront requirements and hence the specifications vary for the different systems in the NIF, we will focus on one system, the injection laser system (ILS) or 'front end.' Also discussed will be the metrology and data manipulation requirements for the large aperture optics. Finally, clarification will be given to the differences between various versions of the RMS wavefront and roughness specifications allowed in ISO 10110, and how they contrast to the RMS roughness specifications used in ANSI-Y14.5.

Proceedings Article | 23 July 1999 Paper

Paper

Optical design of the National Ignition Facility main laser and switchyard/target area beam transport systems

John Miller, R. Edward English, Ronald Korniski, J. Michael Rodgers

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354140

KEYWORDS: Mirrors, Spatial filters, Optical amplifiers, Optical design, National Ignition Facility, Wavefronts, Monochromatic aberrations, Control systems, Laser systems engineering, Polarizers

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Proceedings Article | 23 July 1999 Paper

Paper

National Ignition Facility main laser stray light analysis and control

John Miller, R. Edward English, John Schweyen, Gary Peterson

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354141

KEYWORDS: Spatial filters, Ray tracing, Stray light, Lenses, National Ignition Facility, Optical amplifiers, Stray light control, Reflection, Diffraction, Stray light analysis

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Proceedings Article | 23 July 1999 Paper

Paper

NIF optical specifications: the importance of the RMS gradient

Janice Lawson, Jerome Auerbach, R. Edward English, Mark Henesian, John Hunt, Richard Sacks, John Trenholme, Wade Williams, Milton Shoup, John Kelly, Christopher Cotton

Proceedings Volume 3492, (1999) https://doi.org/10.1117/12.354145

KEYWORDS: National Ignition Facility, Wavefronts, Optics manufacturing, Adaptive optics, Near field optics, Optical testing, Spatial frequencies, Wavefront distortions, Linear filtering, Manufacturing

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Proceedings Article | 21 September 1998 Paper

Paper

Optical system design of the National Ignition Facility

R. Edward English, Curt Laumann, John Miller, Lynn Seppala

Proceedings Volume 3482, (1998) https://doi.org/10.1117/12.321971

KEYWORDS: Mirrors, Spatial filters, Optical amplifiers, National Ignition Facility, Laser systems engineering, Polarizers, Telescopes, Optical design, Crystals, Control systems

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Proceedings Article | 21 September 1998 Paper

Paper

Spatial filter lens design for the main laser of the National Ignition Facility

Ronald Korniski, R. Edward English, John Miller

Proceedings Volume 3482, (1998) https://doi.org/10.1117/12.321972

KEYWORDS: Spatial filters, Lens design, Wavefronts, Optical amplifiers, Monochromatic aberrations, National Ignition Facility, Relays, Spherical lenses, Aspheric lenses, Optical spheres

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Proceedings Article | 21 September 1998 Paper

Paper

Ghost reflection analysis for the main laser of the National Ignition Facility

R. Edward English, John Miller, John Schweyen

Proceedings Volume 3482, (1998) https://doi.org/10.1117/12.321973

KEYWORDS: Reflection, Spatial filters, National Ignition Facility, Optical amplifiers, Optical design, Mirrors, Optical components, Switches, Stray light, Crystals

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Proceedings Article | 8 December 1997 Paper

Paper

Beam control and diagnostic functions in the NIF transport spatial filter

Fred Holdener, Elden Ables, Erlan Bliss, Steven Boege, Robert Boyd, Clifford Chocol, Donald Davis, Robert Demaret, R. Edward English, Curt Laumann, John Miller, Stan Thomas

Proceedings Volume 3047, (1997) https://doi.org/10.1117/12.294245

KEYWORDS: Diagnostics, Spatial filters, Reticles, Sensors, National Ignition Facility, Near field optics, Beam controllers, Optical amplifiers, Light sources, Optical alignment

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Proceedings Article | 19 August 1996 Paper

Paper

Power spectral density specifications for high-power laser systems

Janice Lawson, David Aikens, R. Edward English, C. Robert Wolfe

Proceedings Volume 2775, (1996) https://doi.org/10.1117/12.246761

KEYWORDS: Wavefronts, Spatial frequencies, National Ignition Facility, Laser systems engineering, Optical components, Optical transfer functions, Modulation, High power lasers, Surface roughness, Interferometers

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Proceedings Article | 8 December 1995 Paper

Paper

Use of an intermediate wavelength laser for alignment to inertial confinement fusion targets

R. Edward English, Lynn Seppala, Charles Vann, Erlan Bliss

Proceedings Volume 2633, (1995) https://doi.org/10.1117/12.228313

KEYWORDS: Spatial filters, National Ignition Facility, Optical alignment, Laser systems engineering, Reflectivity, Mirrors, Optical amplifiers, Pulsed laser operation, Laser amplifiers, Refraction

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Proceedings Article | 8 September 1995 Paper

Paper

Specification of optical components using the power spectral density function

Janice Lawson, C. Robert Wolfe, Kenneth Manes, John Trenholme, David Aikens, R. Edward English

Proceedings Volume 2536, (1995) https://doi.org/10.1117/12.218430

KEYWORDS: Wavefronts, Modulation, Spatial frequencies, Optical components, Surface roughness, Laser systems engineering, National Ignition Facility, Laser scattering, Scattering, Phase shift keying

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Proceedings Article | 8 September 1995 Paper

Paper

Implementation of ISO 10110 optics drawing standards for the National Ignition Facility

R. Edward English, David Aikens, Wayne Whistler, Charles Walmer, Richard Maney

Proceedings Volume 2536, (1995) https://doi.org/10.1117/12.218437

KEYWORDS: Standards development, National Ignition Facility, Tolerancing, Optical components, Wavefronts, Coating, Glasses, Laser damage threshold, Silica, Spatial filters

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Proceedings Article | 23 June 1995 Paper

Paper

Database of wavefront measurements for laser system modeling, optical component development, and fabrication process qualification

C. Robert Wolfe, Janice Lawson, David Aikens, R. Edward English

Proceedings Volume 2545, (1995) https://doi.org/10.1117/12.212651

KEYWORDS: Wavefronts, National Ignition Facility, Optical components, Databases, Interferometers, Data modeling, Laser optics, Systems modeling, Phase measurement, Modulation

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Proceedings Article | 25 February 1993 Paper

Paper

Thermal analysis of transmissive elements in high-average-power laser beam delivery systems

Simon Cohen, R. Edward English, Christopher Stolz, John Taylor

Proceedings Volume 1739, (1993) https://doi.org/10.1117/12.140528

KEYWORDS: Absorption, Optical components, Optical coatings, Silica, Laser systems engineering, Optical design, Thermal effects, Beam splitters, Distortion, Beam delivery

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Proceedings Article | 10 December 1992 Paper

Paper

Design and performance of an automated video-based laser-beam alignment system

William Rundle, Michael Kartz, Erlan Bliss, R. Edward English, Roger Peterson, Gary Thompson, Dennis Uhlich

Proceedings Volume 1752, (1992) https://doi.org/10.1117/12.130716

KEYWORDS: Sensors, Control systems, Optical alignment, Mirrors, Cameras, Image processing, CCD image sensors, Video, Lithium, Laser systems engineering

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Proceedings Article | 1 December 1991 Paper

Paper

Optical design of a high-power fiber-optic coupler

R. Edward English, John Halpin, F. Allen House, Robert Paris

Proceedings Volume 1527, (1991) https://doi.org/10.1117/12.48684

KEYWORDS: Optical design, Fiber couplers, Fiber optics, Reflection, Mirrors, Copper vapor lasers, Collimation, Multimode fibers, Optical fibers, Distortion

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Proceedings Article | 1 December 1991 Paper

Paper

Self-referencing Mach-Zehnder interferometer as a laser system diagnostic

Mark Feldman, Daniel Mockler, R. Edward English, Jerry Byrd, J. Thaddeus Salmon

Proceedings Volume 1542, (1991) https://doi.org/10.1117/12.48832

KEYWORDS: Wavefronts, Interferometers, Video, Telescopes, Mirrors, Image processing, Monochromatic aberrations, Beam splitters, Diagnostics, Video processing

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Showing 5 of 21 publications

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