title: Subnanosecond In-Line Soft X-Ray Holography Using Germanium Laser in the 20 nm Wavelength Region.
abstract: Near- and far-field characteristics of a germanium soft x-ray laser at the wavelengths of 23.2-23.6 nm (J = 2-1 transitions) and 19.6 nm (J = 0-1 transition) are given for quantitative evaluation of the germanium laser for holographic applications. In-line Gabor holography of simple structured objects, such as thin opaque fibers and a standard electron microscope test specimen, is demonstrated. The holograms were recorded on PMMA (polymethyl methacrylate) photoresists and llford Q-plates. The holograms recorded on PMMA were retrieved with an atomic force microscope. The object image was reconstructed by numerical reconstruction with phase retrieval algorithm, resulting in a clear, ghost-free image with sharp edges which infer sub-μm resolution. Future directions for x-ray laser holography are briefly discussed.
authors.affiliation: Instituie of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan.
authors.forename: H
authors.initials: H
authors.lastname: Daido
authors.forename: M S
authors.initials: MS
authors.lastname: Schulz
authors.forename: K
authors.initials: K
authors.lastname: Murai
authors.forename: R
authors.initials: R
authors.lastname: Kodama
authors.forename: G
authors.initials: G
authors.lastname: Yuan
authors.forename: J
authors.initials: J
authors.lastname: Goto
authors.forename: K A
authors.initials: KA
authors.lastname: Tanaka
authors.forename: Y
authors.initials: Y
authors.lastname: Kato
authors.forename: S
authors.initials: S
authors.lastname: Nakai
authors.forename: K
authors.initials: K
authors.lastname: Shinohara
authors.forename: T
authors.initials: T
authors.lastname: Honda
authors.forename: I
authors.initials: I
authors.lastname: Kodama
authors.forename: H
authors.initials: H
authors.lastname: Iwasaki
authors.forename: T
authors.initials: T
authors.lastname: Yoshinobu
authors.forename: M
authors.initials: M
authors.lastname: Tsukamoto
authors.forename: M
authors.initials: M
authors.lastname: Niibe
authors.forename: Y
authors.initials: Y
authors.lastname: Fukuda
authors.forename: D
authors.initials: D
authors.lastname: Neely
authors.forename: A
authors.initials: A
authors.lastname: Macphee
authors.forename: G
authors.initials: G
authors.lastname: Slark