Abstract
We present our design and fabrication scheme of a supermirror for hard x-ray telescopes to improve the performance of reflection. Supermirrors are designed to achieve target reflectivity profiles with small ripples in the interesting energy range with a limited number of layer pairs. Starting from conventional design methods, we optimized the thickness distribution of the structure using a numerical approach with the merit function established for this application. As an example, a platinum–carbon supermirror structure of 123 layer pairs with a varying d-space of 2–6 nm was designed to enhance the reflectivity in the energy range from 11 to 55 keV with a flat top at a grazing angle of 0.28 deg. The multilayer thus designed was deposited on a float glass by our DC magnetron sputtering system. The reflectivity profile was successfully measured to be with little oscillation in all energy band of interest.
© 2013 Optical Society of America
Full Article | PDF ArticleMore Like This
Koujun Yamashita, Peter J. Serlemitsos, Jack Tueller, Scott D. Barthelmy, Lyle M. Bartlett, Kai-Wing Chan, Akihiro Furuzawa, Neil Gehrels, Kazutoshi Haga, Hideyo Kunieda, Peter Kurczynski, Gyanendra Lodha, Norio Nakajo, Norihiko Nakamura, Yoshiharu Namba, Yasushi Ogasaka, Takashi Okajima, David Palmer, Ann Parsons, Yang Soong, Carl M. Stahl, Harumi Takata, Keisuke Tamura, Yuzuru Tawara, and Bonnard J. Teegarden
Appl. Opt. 37(34) 8067-8073 (1998)
Takashi Okajima, Keisuke Tamura, Yasushi Ogasaka, Kazutoshi Haga, Seiji Takahashi, Satoshi Ichimaru, Hideo Kito, Shin’ichi Fukuda, Arifumi Goto, Kentaro Nomoto, Hiroyuki Satake, Seima Kato, Yuichi Kamata, Akihiro Furuzawa, Fumie Akimoto, Tsutomu Yoshioka, Kazumasa Kondo, Yoshito Haba, Takeshi Tanaka, Keiichi Wada, Noriyuki Hamada, Murat Hudaverdi, Yuzuru Tawara, Koujun Yamashita, Peter J. Serlemitsos, Yang Soong, Kai-Wing Chan, Scott M. Owens, Fred B. Berendse, Jack Tueller, et al.
Appl. Opt. 41(25) 5417-5426 (2002)
Youwei Yao, Hideyo Kunieda, and Zhanshan Wang
Opt. Express 21(7) 8638-8651 (2013)