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aluminum mirror coatings for uvoir telescope optics including the far uvNASA 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 approx. 55 to 80% in the FUV achieved with little or no degradation over a year. Keywords: Large telescope optics, Aluminum mirror, far UV astrophysics, ALD, coating technology development.
Document ID
20170007053
Document Type
Conference Paper
External Source(s)
Authors
Balasubramanian, Kunjithapatha
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Hennessy, John
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Raouf, Nasrat
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Nikzad, Shouleh
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Ayala, Michael
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Shaklan, Stuart
(Jet Propulsion Lab., California Inst. of Tech. Pasadena, CA, United States)
Scowen, Paul
(Arizona State Univ. Tempe, AZ, United States)
Del Hoyo, Javier
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Quijada, Manuel
(NASA Goddard Space Flight Center Greenbelt, MD, United States)
Date Acquired
August 1, 2017
Publication Date
August 9, 2015
Subject Category
Astrophysics
Optics
Meeting Information
SPIE Optics and Photonics Conference(San Diego, CA)
Distribution Limits
Public
Copyright
Other
Keywords
large telescope optics
coating technology development
ALD