Open AccessX-ray adaptive zoom condenser utilizing an intermediate virtual focus
Author(s) -
Satoshi Matsuyama,
Hiroyuki Yamaguchi,
Takato Inoue,
Yuka Nishioka,
Jumpei Yamada,
Yasuhisa Sano,
Yoshiki Kohmura,
Makina Yabashi,
Tetsuya Ishikawa,
Kazuto Yamauchi
Publication year - 2021
Publication title -
optics express
Language(s) - Uncategorized
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.422723
Subject(s) - optics , focus (optics) , zoom , condenser (optics) , deformable mirror , physics , aperture (computer memory) , adaptive optics , numerical aperture , beam (structure) , computer science , lens (geology) , light source , acoustics , wavelength
We propose an extended X-ray adaptive zoom condenser that can form an intermediate virtual focus. The system comprises two deformable mirrors for focusing within a single dimension and can vary its numerical aperture (NA) without changing the positions of the light source, mirrors, or final focus. The desired system NA is achieved simply by controlling the mirror surfaces, which enables conversion between convex and concave forms, by varying the position of the intermediate virtual focus. A feasibility test at SPring-8 under a photon energy of 10 keV demonstrated that the beam size can be varied between 134 and 1010 nm.