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光子晶体对LYSO闪烁体光输出的影响

Effect of Photonic Crystal on Light Output from Lutetium-Yttrium Oxyorthosilicate Scintillators

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摘要

根据光子晶体(PhCs)提升闪烁体光输出的作用原理,向5 μm厚硅酸钇镥(LYSO)闪烁体的光出射面引入4种不同结构的光子晶体,以提升闪烁体探测器的探测性能。4种PhCs构型分别为六边晶格空气孔型、正方晶格空气孔型、正方晶格圆柱型、正方晶格长方体型。结合Rsoft和MATLAB软件,通过对光子晶体周期、比例、高度三个参量的扫描,得到了每种类型光子晶体的最佳结构参数。模拟结果表明:在LYSO晶体发光中心波长为420 nm的条件下,每种优化后的光子晶体对LYSO的光输出都有一定程度的提升,且六边晶格空气孔型光子晶体对光输出的提升最大,高达17.1945%。

Abstract

According to the principle of improving the light output from scintillators by using photonic crystals (PhCs), we add four PhCs to the 5-μm-thick surface of a lutetium-yttrium oxyorthosilicate (LYSO) scintillator to improve the performance of the scintillator detectors. Four PhC structures are used, i.e., hexagonal air-holes, square air-holes, square cylinders, and square cubic rods. By scanning the period, ratio, and height of PhCs, we acquire four optimized structures using the Rsoft and MATLAB softwares, which is performed under the condition of a 420-nm-center wavelength of LYSO. The simulation results indicate that all the optimized PhC structures exhibit an increased light output and the structure with hexagonal air-holes shows the highest output (up to 17.1945%).

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DOI:10.3788/AOS201939.1031001

所属栏目:薄膜

基金项目:国家重点研发计划、国家自然科学基金;

收稿日期:2019-04-30

修改稿日期:2019-06-06

网络出版日期:2019-10-01

作者单位    点击查看

黄乐程:兰州空间技术物理研究所真空技术与物理重点实验室, 甘肃 兰州 730000
王光毅:兰州空间技术物理研究所真空技术与物理重点实验室, 甘肃 兰州 730000
薛玉雄:兰州空间技术物理研究所真空技术与物理重点实验室, 甘肃 兰州 730000
杨生胜:兰州空间技术物理研究所真空技术与物理重点实验室, 甘肃 兰州 730000

联系人作者:杨生胜(2syang@sina.com)

备注:国家重点研发计划、国家自然科学基金;

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引用该论文

Huang Lecheng,Wang Guangyi,Xue Yuxiong,Yang Shengsheng. Effect of Photonic Crystal on Light Output from Lutetium-Yttrium Oxyorthosilicate Scintillators[J]. Acta Optica Sinica, 2019, 39(10): 1031001

黄乐程,王光毅,薛玉雄,杨生胜. 光子晶体对LYSO闪烁体光输出的影响[J]. 光学学报, 2019, 39(10): 1031001

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