Dr. H. Philip Stahl
Senior Optical Physicist
SPIE Involvement:
Conference Program Committee | Track Chair | Author | Editor | Instructor | 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 (156)

SPIE Journal Paper | 10 January 2024 Open Access
JATIS, Vol. 10, Issue 01, 011207, (January 2024) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.011207
KEYWORDS: Mirrors, Beryllium, Space mirrors, Cryogenics, Design, Space telescopes, Mirror surfaces, Actuators, Online learning, Polishing

SPIE Journal Paper | 2 November 2023 Open Access
JATIS, Vol. 10, Issue 01, 011202, (November 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.011202
KEYWORDS: Mirrors, Metrology, Optical metrology, Optical testing, Cryogenics, Mirror surfaces, Interferometers, Optics manufacturing, Manufacturing, Distortion

SPIE Journal Paper | 2 November 2023 Open Access
JATIS, Vol. 10, Issue 01, 011203, (November 2023) https://doi.org/10.1117/12.10.1117/1.JATIS.10.1.011203
KEYWORDS: Mirrors, Telescopes, James Webb Space Telescope, Hubble Space Telescope, Space mirrors, Space telescopes, Beryllium, Diffraction limit, Observatories, Diffraction

Proceedings Article | 5 October 2023 Presentation
Ron Eng, John Casstevens, Alex Few, Christopher Hopkins, Tomasz Lis, Jaganathan Ranganathan, H. Stahl
Proceedings Volume PC12677, PC126770B (2023) https://doi.org/10.1117/12.2676844
KEYWORDS: Aluminum, Optics manufacturing, Cryogenics, Metals, Matrices, Composites, Aluminum mirrors, Alloys, Additive manufacturing, Mirror structures

Proceedings Article | 5 October 2023 Presentation
Proceedings Volume PC12677, PC126770J (2023) https://doi.org/10.1117/12.2677800
KEYWORDS: Computer generated holography, Modeling