Dr. H. Philip Stahl
Senior Optical Physicist
SPIE Involvement:
Conference Program Committee | Track Chair | Author | Editor | Instructor | Visiting Lecturer | Science Fair Judge
Area of Expertise:
Optical Engineering , Optical Metrology , Optical Fabrication , Systems Engineering , Optical Testing , Interferometry
Profile Summary

Dr. H. Philip Stahl is a Senior Optical Physicist at NASA MSFC currently leading an effort to mature technologies for a new large aperture telescope to replace the Hubble Space Telescope. Previous assignments include Mirror Technology lead for the James Webb Space Telescope. Dr. Stahl is a leading authority in optical metrology, optical engineering, and phase-measuring interferometry. Many of the world's largest telescopes have been fabricated with the aid of high-speed and infrared phase-measuring Interferometers developed by him, including the Keck, VLT and Gemini telescopes. Dr. Stahl is a Fellow of SPIE, Fellow of OSA, member of AAS and IAU. He was the 2014 SPIE President and an ICO Vice-President (2005-11). He earned his PhD (1985) and MS (1983) in Optical Science at the University of Arizona Optical Sciences Center. He earned a BA in Physics and Mathematics from Wittenberg University in 1979.
Publications (133)

SPIE Journal Paper | 23 May 2020
JATIS Vol. 6 Issue 02
KEYWORDS: Mirrors, Infrared technology, Infrared radiation, UV optics, Ultraviolet radiation, Systems modeling, Telescopes, Performance modeling, Space telescopes, Integrated modeling

Proceedings Article | 16 September 2019
Proc. SPIE. 11115, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX
KEYWORDS: Observatories, Telescopes, Mirrors, Segmented mirrors, Sensors, Wavefronts, Deformable mirrors, Coronagraphy, Exoplanets, Optical instrument design

Proceedings Article | 11 September 2019
Proc. SPIE. 11103, Optical Modeling and System Alignment
KEYWORDS: Telescopes, Mirrors, Exoplanets, Space telescopes, Finite element methods, Infrared telescopes, Astrophysics, Systems modeling

Proceedings Article | 9 September 2019
Proc. SPIE. 11116, Astronomical Optics: Design, Manufacture, and Test of Space and Ground Systems II
KEYWORDS: Observatories, Diffraction, Telescopes, Mirrors, Stars, Spectroscopy, Imaging spectroscopy, Exoplanets, Astrophysics, Planetary systems

Proceedings Article | 9 September 2019
Proc. SPIE. 11117, Techniques and Instrumentation for Detection of Exoplanets IX
KEYWORDS: Telescopes, Polarization, Coronagraphy, Numerical modeling

Showing 5 of 133 publications
Proceedings Volume Editor (9)

SPIE Conference Volume | 13 September 2005

SPIE Conference Volume | 22 December 2003

SPIE Conference Volume | 27 December 2001

SPIE Conference Volume | 11 November 1999

Showing 5 of 9 publications
Conference Committee Involvement (39)
20th Annual Mirror Technology SBIR/STTR Workshop
9 February 2021 | Huntsville, United States
Space Telescopes and Instrumentation 2020: Optical, Infrared, and Millimeter Wave
13 December 2020 | San Diego, California, United States
Optical Metrology and Inspection for Industrial Applications VII
11 October 2020 | Beijing, China
Optical Metrology and Inspection for Industrial Applications VI
21 October 2019 | Hangzhou, China
UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts IX
11 August 2019 | San Diego, California, United States
Showing 5 of 39 Conference Committees
Course Instructor
SC392: Testing Aspheric Components
This course summarizes aspheric component testing techniques, including: profilometry, interferometry, and geometric ray tests. Both null and non-null configurations are presented as well as specialized techniques: phase-measuring interferometry; CGH, two-wavelength, and infrared interferometry; sparse-array sampling; moire interferometry; and the Ronchi test.
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