软X光谱学光子筛衍射特性的实验表征  

Measurement of diffraction properties of photon sieves applied to spectroscopy for soft X-ray

作　　者：魏来[1,2] 曹磊峰[2] 范伟[2] 臧华萍[2] 高宇林[2] 朱效力[3] 谢长青[3] 谷渝秋[2] 张保汉[2] 王晓方[1] 

机构地区：[1]中国科学技术大学近代物理系,中国科学院基础等离子体物理重点实验室,合肥230026 [2]中国工程物理研究院激光聚变研究中心,高温高密度等离子体物理国防科技重点实验室,四川绵阳621900 [3]中国科学院微电子研究所纳米加工与新器件集成技术实验室,北京100029

出　　处：《强激光与粒子束》2011年第2期387-391,共5页High Power Laser and Particle Beams

基　　金：国家自然科学基金项目(10727504);中国科学院创新项目

摘　　要：概述了谱学光子筛的设计原理,计算了其透射率,并对设计的软X光谱学光子筛的衍射模式在光学波段进行了模拟计算和实验表征。结果表明,这种新型色散元件具有良好的、与设计预期一致的单级衍射特性,3级及以上的高级衍射能被有效抑制。与传统的透射光栅和以前设计的单级衍射光栅相比,新设计的软X光谱学光子筛更易于实现自支撑,可望在极紫外和软X光谱测量过程中得到广泛应用。The principle of a photon sieve applied to soft X-ray spectroscopy is introduced,and the transmittance of the photon sieve is calculated.The diffraction pattern of the photon sieve is simulated and measured in visible light wave band.It is shown that the dispersive component has good single order diffraction properties,i.e.the third order and higher order diffraction can be suppressed effectively.The photon sieve applied to soft X-ray spectroscopy can realize self-sustaining easily compared with the conventional transmission grating and single-order diffraction grating designed before,and it might be employed widely for X-ray and extreme ultraviolet spectroscopic diagnoses.

关 键 词：软X光 光子筛 衍射光栅 衍射特性 

分 类 号：O436.1[机械工程—光学工程]