Progress In A New Reflective Coating From The Far-ultraviolet To The Near-infrared.

Details Progress In A New Reflective Coating From The Far-ultraviolet To The Near-infrared. Progress In A New Reflective Coating From The Far-ultraviolet To The Near-infrared.

Jan 2012

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2012aas...21932802b&link_type=abstract

American Astronomical Society, AAS Meeting #219, #328.02

Computer Science

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Scientific paper

We present new progress in optical coatings (very thin MgF2 over aluminum) that have to the potential to revolutionize far-ultraviolet astronomy by dramatically improving the efficiency. By protecting the aluminum with a layer that does not impact far-ultraviolet performance, we will achieve nearly perfect aluminum reflectivity. Due to the nature of our coating, in addition to unprecedented far-ultraviolet reflectivity the coating will provide truly broadband performance out to much longer wavelengths. We use atomic layer deposition to ensure a protected aluminum surface that minimizes the impact of the protective overcoat. The minimal impact of the overcoat may be important to the induced polarization of the optical surfaces, leading to potentially improved telescopes for exo-planet science, and might allow a combined exo-planet UVOIR mission.

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