Roger A. Paquin
Retired Consultant
SPIE Involvement:
Fellow status | Conference Program Committee | Conference Chair | Author | Instructor
Area of Expertise:
Metallurgy , Materials engineering , Dimensional stability , Materials processing , materials selection
Publications (26)

Proceedings Article | 28 July 2014
Proc. SPIE. 9151, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation
KEYWORDS: Telescopes, Mirrors, Glasses, Laser energy, Crystals, Silicon, Semiconductor lasers, Space telescopes, Space based lasers, Asteroids

Proceedings Article | 30 September 2013
Proc. SPIE. 8837, Material Technologies and Applications to Optics, Structures, Components, and Sub-Systems
KEYWORDS: Telescopes, Mirrors, Diamond, Glasses, Crystals, Silicon, Distortion, Space telescopes, Finite element methods, Aluminum

Proceedings Article | 13 September 2012
Proc. SPIE. 8450, Modern Technologies in Space- and Ground-based Telescopes and Instrumentation II
KEYWORDS: Telescopes, Mirrors, Metals, Glasses, Silicon, Distortion, Space telescopes, Silicon carbide, Space operations, Optical instrument design

Proceedings Article | 22 August 2009
Proc. SPIE. 7425, Optical Materials and Structures Technologies IV
KEYWORDS: Telescopes, Mirrors, Crystals, Silicon, Space telescopes, Aluminum, Silicon carbide, Neodymium, Beryllium, Temperature metrology

Proceedings Article | 6 May 2009
Proc. SPIE. 7330, Sensors and Systems for Space Applications III
KEYWORDS: Optical components, Mirrors, Metals, Crystals, Ions, Silicon, Manufacturing, Solids, Aluminum, Neodymium

Showing 5 of 26 publications
Conference Committee Involvement (4)
Optical Materials and Structures Technologies
4 August 2003 | San Diego, California, United States
Advanced Materials for Optics and Precision Structures
27 July 1997 | San Diego, CA, United States
Optomechanics and Dimensional Stability
25 July 1991 | San Diego, CA, United States
Dimensional Stability
12 July 1990 | San Diego, CA, United States
Course Instructor
SC016: Materials for Precision Instruments
This course covers selection and processing of materials for enhanced performance in optical and instrument systems. Emphasis will be on choosing the right material for the application. The importance of various thermal and mechanical properties, and related figures of merit will be presented and they will be compared for various materials. The dependence of these properties on temperature and other variables will be discussed with respect to system design and operation. Issues such as dimensional stability, options for mirrors and structures, and athermalization will be discussed. Fabrication methods will be described for most materials. Materials covered include: glasses and glass-ceramics, silicon carbide, composites, aluminums, invars, and other metals. Specific materials problems of attendees will be discussed as time permits.
SC219: Materials: Properties and Fabrication for Stable Optical Systems
This course describes materials and their properties as used in instrument and optical systems, emphasizing sources and solutions of dimensional instability of components.It covers issues such as, options for mirrors, benches and other structures, UHV &cryo compatibility and athermalization of both refractive and reflective systems. Optical materials such as glasses, aluminum, beryllium silicon and silicon carbide will be reviewed. Structural materials covered include: aluminum alloys, steels &invars, and composites. Fabrication methods will be described for each material with emphasis on fabrication for stability.
SC139: Telescope Systems: Materials Choices for Performance & Stability
This course describes materials for instruments and telescopes, emphasizing dimensional stability of components and covering issues such as cryo compatibility, options for large instrument benches and structures, and athermalization. Materials covered include: aluminum alloys, steels & invars, graphite/polymers and aluminum/beryllium. Refractive and reflective optical materials such as glasses, glass-ceramics, beryllium and silicon carbide will be reviewed. Fabrication methods will be described for each material. Specific materials problems of attendees will be discussed as time permits.
SC474: Non-Glass Materials for Mirror Systems
Many applications call for mirrors with metal, ceramic or composite materials for their mirror faceplates and/or structures. This course describes many options available for mirror, benches and structures. Materials properties, availability, and fabrication methods will be described with emphasis on processing for dimensional stability. Materials discussed include: aluminum alloys, beryllium, invars & steels, silicon carbides and metal & polymer matrix composites.
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