Coatings for UVOIR telescope mirrors

Kunjithapatham Balasubramanian; John Hennessy; Nasrat Raouf; Shouleh Nikzad; Michael Ayala; Stuart Shaklan; Paul Scowen; Javier Del Hoyo; Manuel Quijada

doi:10.1117/12.2188981

22 September 2015 Aluminum mirror coatings for UVOIR telescope optics including the far UV

Kunjithapatham Balasubramanian, John Hennessy, Nasrat Raouf, Shouleh Nikzad, Michael Ayala, Stuart Shaklan, Paul Scowen, Javier Del Hoyo, Manuel Quijada

Author Affiliations +

Proceedings Volume 9602, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VII; 96020I (2015) https://doi.org/10.1117/12.2188981
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

NASA Cosmic Origins (COR) Program identified the development of high reflectivity mirror coatings for large astronomical telescopes particularly for the far ultra violet (FUV) part of the spectrum as a key technology requiring significant materials research and process development. In this paper we describe the challenges and accomplishments in producing stable high reflectance aluminum mirror coatings with conventional evaporation and advanced Atomic Layer Deposition (ALD) techniques. We present the current status of process development with reflectance of ~ 55 to 80% in the FUV achieved with little or no degradation over a year.

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Kunjithapatham Balasubramanian, John Hennessy, Nasrat Raouf, Shouleh Nikzad, Michael Ayala, Stuart Shaklan, Paul Scowen, Javier Del Hoyo, and Manuel Quijada "Aluminum mirror coatings for UVOIR telescope optics including the far UV", Proc. SPIE 9602, UV/Optical/IR Space Telescopes and Instruments: Innovative Technologies and Concepts VII, 96020I (22 September 2015); https://doi.org/10.1117/12.2188981

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