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Proceedings Paper

Fabrication of large-aperture, high efficiency, Fresnel diffractive membrane optic for space telescope
Author(s): Jian Zhang; Mengjuan Li; Ganghua Yin; Jianchao Jiao; Zhengkun Liu; Xiangdong Xu; Shaojun Fu
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Paper Abstract

Diffractive optical system can be a favorable choice for large-aperture space telescope to reduce the mass and size of image system. To meet the demand of large-aperture, high efficiency, lightweight diffractive optic for high resolution remote sensing, a 200 mm diameter, 20 μmthick, 4-level diffractive membrane fabricated is shown to have over 62% diffraction efficiency into the +1 order, with 0.051 efficiency RMS. Over 66% diffraction efficiency is achieved for a 100 mm aperture membrane, with 0.023 efficiency RMS. The membrane thickness uniformity control is discussed and 8 nm wave front error RMS is achieved in 100 mm diameter.

Paper Details

Date Published: 24 October 2016
PDF: 8 pages
Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96820O (24 October 2016); doi: 10.1117/12.2242266
Show Author Affiliations
Jian Zhang, Univ. of Science and Technology of China (China)
Mengjuan Li, Beijing Institute of Space Mechanics and Electricity (China)
Ganghua Yin, Beijing Institute of Space Mechanics and Electricity (China)
Jianchao Jiao, Beijing Institute of Space Mechanics and Electricity (China)
Zhengkun Liu, Univ. of Science and Technology of China (China)
Xiangdong Xu, Univ. of Science and Technology of China (China)
Shaojun Fu, Univ. of Science and Technology of China (China)


Published in SPIE Proceedings Vol. 9682:
8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Myung K. Cho; Bin Fan, Editor(s)

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