Instituie of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka 565, Japan.
J Xray Sci Technol. 1995 Jan 1;5(1):105-20. doi: 10.3233/XST-1995-5109.
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.
给出了波长为 23.2-23.6nm（J=2-1 跃迁）和 19.6nm（J=0-1 跃迁）的锗软 X 射线激光的近场和远场特性，以便对锗激光在全息应用中的性能进行定量评估。演示了简单结构物体的在线 Gabor 全息术，例如薄不透明纤维和标准电子显微镜测试样本。全息图记录在 PMMA（聚甲基丙烯酸甲酯）光致抗蚀剂和 Ilford Q 板上。在 PMMA 上记录的全息图使用原子力显微镜进行检索。通过相位恢复算法的数值重建来重建物体图像，得到了清晰、无重像、边缘锐利的图像，推断出亚微米分辨率。简要讨论了 X 射线激光全息术的未来发展方向。
