CONSTRUCTION AND TEST OF PHASE ZONE PLATES FOR X-RAY MICROSCOPY

被引：9
|
作者：
TENNANT, DM
GREGUS, JE
JACOBSEN, C
RAAB, EL
机构：
[1] SUNY STONY BROOK,DEPT PHYS,STONY BROOK,NY 11794
[2] AT&T BELL LABS,MURRAY HILL,NJ 07974
来源：
OPTICS LETTERS | 1991年 / 16卷 / 09期
关键词：
D O I：
10.1364/OL.16.000621
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
We report the construction and test of an x-ray phase zone plate with 0.1-mu-m imaging resolution and > 14% diffraction efficiency. The zone plate served as the focusing optic in a scanning microscope that operated in the water window, 2.5 nm < lambda < 4.5 nm, and therefore is optimally suited for imaging wet biological specimens. We enhanced the efficiency of the zone plate by using germanium for the absorbing zones, so that some of the incident radiation is transmitted with the correct phase shift to interfere constructively at the focal spot. The zone plate was supported on a relatively transparent membrane, giving the microscope a high absolute throughput.
引用
收藏
页码：621 / 623
页数：3
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