Effects of Space Environment Factors on Optical Materials

Liu, Hai; Geng, Haoran; He, Song; Yang, Di; Abraimov, V. V.; Wang, Huaiyi

doi:10.2514/1.20885

Cited by 6 publications

(3 citation statements)

References 8 publications

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“…The mechanical stability under thermal cycling could be reduced after exposition to radiation. Additionally, protons of a particular energy could be accumulated at layer interfaces and form small hydrogen "bubbles" which could trigger blistering of surfaces, especially in combination with temperature variation [3].…”

Section: Radiation Effects In Optical Coatingsmentioning

confidence: 99%

Radiation testing of optical coatings: better testing with simulations

Kuhnhenn

Steffens

Baum

2019

International Conference on Space Optics — ICSO 2018

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Radiation testing of thin optical coatings for space requires different approaches compared to bulk optical components or other material samples. In contrast to thicker samples, already particles of lower energy and thus lower range in the material will deposit high levels of dose in functional areas. In this paper we will discuss those differences and show ways to develop optimized test strategies.

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Section: Radiation Effects In Optical Coatingsmentioning

confidence: 99%

Radiation testing of optical coatings: better testing with simulations

Kuhnhenn

Steffens

Baum

2019

International Conference on Space Optics — ICSO 2018

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“…Radiation damage to glasses was extensively studied by the Kepler project, which uses a Schmidt transparent lens corrector. Glass types with the correct dispersion and index properties that also survive long durations in space have been studied, 37,38 but additional work is needed.…”

Section: Wide Field Of Viewmentioning

confidence: 99%

Innovative telescope architectures for future large space observatories

Polidan

Breckinridge²,

Lillie³

et al. 2016

J. Astron. Telesc. Instrum. Syst

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Over the past few years, we have developed a concept for an evolvable space telescope (EST) that is assembled on orbit in three stages, growing from a 4 × 12-m telescope in Stage 1, to a 12-m filled aperture in Stage 2, and then to a 20-m filled aperture in Stage 3. Stage 1 is launched as a fully functional telescope and begins gathering science data immediately after checkout on orbit. This observatory is then periodically augmented in space with additional mirror segments, structures, and newer instruments to evolve the telescope over the years to a 20-m space telescope. We discuss the EST architecture, the motivation for this approach, and the benefits it provides over current approaches to building and maintaining large space observatories.

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“…Glass types with the correct dispersion and index properties that also survive long duration in space have been studied 11 , but additional work is needed.…”

Section: Wide Field Of Viewmentioning

confidence: 99%

Prime focus architectures for large space telescopes: reduce surfaces to save cost

Breckinridge

Lillie²

2016

SPIE Proceedings

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Conceptual architectures are now being developed to identify future directions for post JWST large space telescope systems to operate in the UV Optical and near IR regions of the spectrum. Here we show that the cost of optical surfaces within large aperture telescope/instrument systems can exceed $100M/reflection when expressed in terms of the aperture increase needed to over come internal absorption loss. We recommend a program in innovative optical design to minimize the number of surfaces by considering multiple functions for mirrors. An example is given using the Rowland circle imaging spectrometer systems for UV space science. With few exceptions, current space telescope architectures are based on systems optimized for ground-based astronomy. Both HST and JWST are classical "Cassegrain" telescopes derived from the ground-based tradition to co-locate the massive primary mirror and the instruments at the same end of the metrology structure. This requirement derives from the dual need to minimize observatory dome size & cost in the presence of the Earth's 1-g gravitational field. Space telescopes, however function in the zero gravity of space and the 1-g constraint is relieved to the advantage of astronomers. Here we suggest that a prime focus large aperture telescope system in space may have potentially have higher transmittance, better pointing, improved thermal and structural control, less internal polarization and broader wavelength coverage than Cassegrain telescopes. An example is given showing how UV astronomy telescopes use single optical elements for multiple functions and therefore have a minimum number of reflections.

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Effects of Space Environment Factors on Optical Materials

Cited by 6 publications

References 8 publications

Radiation testing of optical coatings: better testing with simulations

Radiation testing of optical coatings: better testing with simulations

Innovative telescope architectures for future large space observatories

Prime focus architectures for large space telescopes: reduce surfaces to save cost

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