A new photorefractive imaging X-ray sensor

被引：0
|
作者：
Berben, D [1 ]
Andreas, B [1 ]
Buse, K [1 ]
机构：
[1] Univ Bonn, Inst Phys, D-53115 Bonn, Germany
来源：
PHOTOREFRACTIVE FIBER AND CRYSTAL DEVICES: MATERIALS, OPTICAL PROPERTIES, AND APPLICATIONS VII, AND OPTICAL DATA STORAGE | 2002年 / 4459卷
关键词：
D O I：
10.1117/12.454012
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present a new concept for an imaging X-ray sensor based on X-ray-induced hologram erasure. A transmission hologram is recorded by two plane waves in a photorefractive lithium niobate crystal. This hologram acts as a sensor plate that is positioned towards the X-ray radiation like a conventional X-ray film. Spatially modulated X-ray illumination produces a spatially modulated conductivity that erases the hologram. By these means, a hologram with spatially modulated diffraction efficiency is obtained. Reading of the hologram with a plane wave of visible light then yields in the diffracted beam a replica of the original X-ray light pattern. First experimental data are presented. High spatial resolution, limited in principle just by the wavelength of the probe light, together with a time integrating behavior are the main advantages of such a detector.
引用
收藏
页码：141 / 147
页数：7
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