UV radiation protection for space telescope FPA using cerium

We have designed and developed the UV radiation protection methodology for space optics by using Cerium absorption property and visible spectrum transmission improvement by multi-layer anti-reflection coating effect. The effect of thin film on the surface property of substrate is measured through wa...

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Bibliographic Details
Published in:Radiation physics and chemistry (Oxford, England : 1993) England : 1993), 2018-12, Vol.153, p.159-163
Main Authors: Hussain, Talib, Jie, Tian, Fung, Wang Jin, Hanif, Muhammad Nabeel, Xiao, Dong
Format: Article
Language:English
Subjects:
Antireflection coatings
Cerium
Chemical elements
Coating effects
Error analysis
Multi-layer
Multilayers
Protective coatings
Radiation protection
Rare-earth doped materials and wavefront error
Space telescopes
Substrates
Surface properties
Surface roughness
Thin film
Thin films
Ultraviolet radiation
UV radiation
Visible spectrum
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Summary:We have designed and developed the UV radiation protection methodology for space optics by using Cerium absorption property and visible spectrum transmission improvement by multi-layer anti-reflection coating effect. The effect of thin film on the surface property of substrate is measured through wavefront error map and surface roughness. The wavefront error and surface roughness changes from 0.0124 λ to 0.0138 λ and RMS 0.8587 nm to RMS 0.8619 nm respectively, which shows no effect of the thin film coating on the substrate. •UV radiation protection methodology is valid for both space and ground base optics applications.•UV radiation protection layer is composed of three layers that is simple and cost effective solution.•We have blocked the UV radiation and have improved the visible band transmission that may improve the image sharpness.•The designed multilayer thin film acts as an embedded UV filter on FPA optics.
ISSN:0969-806X
1879-0895
DOI:10.1016/j.radphyschem.2018.09.020