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High reflectance broadband thin films used in x-ray telescopes
Author(s): Yang Yang; Qiushi Huang; Hangjian Ni; Zhong Zhang; Zhanshan Wang
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Paper Abstract

With the development of grazing incidence telescopes, X-ray astronomy has experienced a rapid development in the last decades. Effective area plays an important role in telescopes performance. Except for increasing the geometric area, improving the reflectivity of coating mirror is a good way to increase effective area. Generally, the reflective coating is a smooth single layer of a heavy metal, such as gold, platinum, or iridium. We used a structure of bi-layer thin films with high reflectivity. The thin films were deposited on D263 glass substrate and the hard X-ray reflectance was measured. We compared the reflectivity of two samples, which coated with bare platinum and bi-layer structure, respectively. The fabricated structure is characterized and the estimated theoretical results of the reflectivity is calculated, reflectivity reached 95% and 91% in the energy region of 2 and 2.5 keV at the grazing incidence angle of 0.5°.

Paper Details

Date Published: 5 June 2018
PDF: 8 pages
Proc. SPIE 10691, Advances in Optical Thin Films VI, 106910S (5 June 2018); doi: 10.1117/12.2311850
Show Author Affiliations
Yang Yang, Tongji Univ. (China)
Qiushi Huang, Tongji Univ. (China)
Hangjian Ni, Tongji Univ. (China)
Zhong Zhang, Tongji Univ. (China)
Zhanshan Wang, Tongji Univ. (China)

Published in SPIE Proceedings Vol. 10691:
Advances in Optical Thin Films VI
Michel Lequime; H. Angus Macleod; Detlev Ristau, Editor(s)

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