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 | September 9, 2015

The beam rotation that almost was in the National Ignition Facility

Proc. SPIE. 9583, An Optical Believe It or Not: Key Lessons Learned IV

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

PROCEEDINGS ARTICLE | August 18, 2005

Multicolor edge function computation

Proc. SPIE. 5867, Optical Modeling and Performance Predictions II

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

SPIE Journal Paper | July 1, 2000

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

Wang, David , Aikens, David , English, R. Edward

OE Vol. 39 Issue 07

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

PROCEEDINGS ARTICLE | November 11, 1999

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

Proc. SPIE. 3782, Optical Manufacturing and Testing III

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

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 | November 11, 1999

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

Proc. SPIE. 3782, Optical Manufacturing and Testing III

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

PROCEEDINGS ARTICLE | July 23, 1999

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

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

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

PROCEEDINGS ARTICLE | July 23, 1999

National Ignition Facility main laser stray light analysis and control

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

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

PROCEEDINGS ARTICLE | July 23, 1999

NIF optical specifications: the importance of the RMS gradient

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

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

PROCEEDINGS ARTICLE | September 21, 1998

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

Proc. SPIE. 3482, International Optical Design Conference 1998

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

PROCEEDINGS ARTICLE | September 21, 1998

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

Proc. SPIE. 3482, International Optical Design Conference 1998

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

PROCEEDINGS ARTICLE | September 21, 1998

Optical system design of the National Ignition Facility

Proc. SPIE. 3482, International Optical Design Conference 1998

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

PROCEEDINGS ARTICLE | December 8, 1997

Beam control and diagnostic functions in the NIF transport spatial filter

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

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

PROCEEDINGS ARTICLE | August 19, 1996

Power spectral density specifications for high-power laser systems

Proc. SPIE. 2775, Specification, Production, and Testing of Optical Components and Systems

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

PROCEEDINGS ARTICLE | December 8, 1995

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

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

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

PROCEEDINGS ARTICLE | September 8, 1995

Specification of optical components using the power spectral density function

Proc. SPIE. 2536, Optical Manufacturing and Testing

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

PROCEEDINGS ARTICLE | September 8, 1995

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

Proc. SPIE. 2536, Optical Manufacturing and Testing

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

PROCEEDINGS ARTICLE | June 23, 1995

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

Proc. SPIE. 2545, Interferometry VII: Applications

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

PROCEEDINGS ARTICLE | February 25, 1993

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

Proc. SPIE. 1739, High Heat Flux Engineering

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

PROCEEDINGS ARTICLE | December 10, 1992

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

Proc. SPIE. 1752, Current Developments in Optical Design and Optical Engineering II

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

PROCEEDINGS ARTICLE | December 1, 1991

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

Proc. SPIE. 1542, Active and Adaptive Optical Systems

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

PROCEEDINGS ARTICLE | December 1, 1991

Optical design of a high-power fiber-optic coupler

Proc. SPIE. 1527, Current Developments in Optical Design and Optical Engineering

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

Showing 5 of 21 publications

SIGN IN TO:

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