Fabrication of large-aperture, high efficiency, Fresnel diffractive membrane optic for space telescope

Jian Zhang; Mengjuan Li; Ganghua Yin; Jianchao Jiao; Zhengkun Liu; Xiangdong Xu; Shaojun Fu

doi:10.1117/12.2242266

24 October 2016 Fabrication of large-aperture, high efficiency, Fresnel diffractive membrane optic for space telescope

Jian Zhang, Mengjuan Li, Ganghua Yin, Jianchao Jiao, Zhengkun Liu, Xiangdong Xu, Shaojun Fu

Proceedings Volume 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 96820O (2016) https://doi.org/10.1117/12.2242266
Event: Eighth International Symposium on Advanced Optical Manufacturing and Testing Technology (AOMATT2016), 2016, Suzhou, China

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.

Citation Download Citation

Jian Zhang, Mengjuan Li, Ganghua Yin, Jianchao Jiao, Zhengkun Liu, Xiangdong Xu, and Shaojun Fu "Fabrication of large-aperture, high efficiency, Fresnel diffractive membrane optic for space telescope", Proc. SPIE 9682, 8th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 96820O (24 October 2016); https://doi.org/10.1117/12.2242266

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