Nearly diffraction-limited hard X-ray line focusing with hybrid adaptive X-ray mirror based on mechanical and piezo-driven deformation
| Autor: | Junki Sonoyama, Hiroki Nakamori, Tetsuya Ishikawa, Hiroki Hayashi, Hiroyuki Yamaguchi, Yasuhisa Sano, Kazuto Yamauchi, Kazuteru Akiyama, Yoshiki Kohmura, Takumi Goto, Makina Yabashi, Satoshi Matsuyama |
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| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Diffraction Materials science business.industry Deformation (meteorology) Ellipse 01 natural sciences Atomic and Molecular Physics and Optics Deformable mirror 010305 fluids & plasmas Controllability Full width at half maximum Optics 0103 physical sciences Line (geometry) business Beam (structure) |
| Zdroj: | Optics Express. 26:17477 |
| ISSN: | 1094-4087 |
| Popis: | We have developed the new hybrid adaptive X-ray mirror based on mechanical and piezo-driven deformation to realize precise shape controllability on a long-length mirror. The mechanical bender approximately provides the required ellipse, while the piezoelectric actuators attached to the mirror correct very small residual errors to satisfy the diffraction-limited condition. The mechanical bender significantly reduces the role of the piezoelectric actuator, resulting in the suppression of accuracy degradation due to the drift and/or junction effect of the piezoelectric actuators. In addition, line focusing was demonstrated with two different numerical apertures at SPring-8, and the obtained beam sizes were 127 and 253 nm (FWHM), which agree well with the diffraction-limited sizes. |
| Databáze: | OpenAIRE |
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