DESIGN OF A GRADIENT REFRACTIVE-INDEX PHASE ZONE PLATE FOR SOFT X-RAYS

被引：15

作者：

FUJISAKI, H

NAKAGIRI, N

机构：

[1] Development Corporation of Japan, Yoshida Nano-Mechanism Project, Tsukuba Research Consor-tium, Tsukuba, Ibaraki, 300-26

来源：

APPLIED OPTICS | 1990年 / 29卷 / 04期

关键词：

D O I：

10.1364/AO.29.000483

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

A new type of zone plate has been designed for soft x-rays, based on radial modulation of the refractive indices of the material. It is made with two materials; the concentration of one material increases gradually and that of the other decreases with increasing radius in each pair of zones. When such a zone plate is made with titanium and chromium and their concentrations are optimized for use at the wavelength of 2.74 nm, its x-ray focusing efficiency would be 34%. This value is 3.4 and 1.4 times the efficiencies of the Fresnel zone plate and the x-radian phase shifting zone plate, respectively. © 1990 Optical Society of America.

引用

页码：483 / 488

页数：6

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