Open AccessTi/Al multilayer zone plate and Bragg–Fresnel lens
Author(s) -
Koike M.,
Suzuki I. H.,
Komiya S.,
Amemiya Y.
Publication year - 1998
Publication title -
journal of synchrotron radiation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.172
H-Index - 99
ISSN - 1600-5775
DOI - 10.1107/s090904959701666x
Subject(s) - zone plate , optics , lens (geology) , fresnel zone antenna , materials science , fresnel lens , fresnel zone , physics , computer science , diffraction , telecommunications , smart antenna , dipole antenna , antenna (radio)
By using a helicon plasma sputtering technique, a one‐dimensional Ti/Al multilayer zone plate with an outermost layer width of 76 nm has been successfully fabricated. A Bragg–Fresnel lens has been made by combining this zone plate with a Ge(422) crystal. Comparison of the Ti/Al multilayer zone plate with the Ag/Al zone plate is discussed in terms of focusing efficiency.