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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

随着微小卫星市场的蓬勃发展,人们开始考虑利用研制周期短、成本低的微小卫星平台[1],并在其上搭载探测器进行更加精细化、全面化的空间探测[2]。然而,传统闪烁体探测器的体积大、功耗高,无法适配微小卫星平台,即使高度发达的集成电路产业能够实现探测器后端电子学电路的小体积和低功耗[3],也无法突破光子在闪烁体内部的全反射对闪烁体探测器探测性能的限制。以硅酸钇镥(LYSO)晶体为例,尽管其具有密度大、辐射长度短、不潮解、相对发光效率高等优点,但即使在其出射面添加折射率为1.41的硅胶光学耦合剂来增大闪烁光的出射临界角,该晶体内部直接出射(不经过多次反射)的光子比例也仍低于20%[4],限制了电子学电路收集到的光子数量,制约了闪烁体探测器的探测性能。受光子晶体(PhCs)提升发光二极管(LED)出光效率[5-6]以及太阳能电池性能[7]的启发,笔者在LYSO闪烁体的光出射面引入了类似的量子阱结构——光子晶体,以期在适配微小卫星平台的同时提升闪烁晶体的光输出,进而提升探测器的探测性能。

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%).

Newport宣传-MKS新实验室计划
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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;

【1】Zhou Y Q, Luo C, Ni T et al. Development trend of the commercialized microsatellite industry Space International. 2016(5), 37-43(0).
周英庆, 罗超, 倪涛 等. 商业化微小卫星产业发展趋势及思考 国际太空. 2016(5), 37-43(0).

【2】Shi L Q. Research on radiation environment and surface charging effect of low orbit aircraft. Hefei: University of Science and Technology of China. 1-15(2011).
师立勤. 低轨道航空器辐射环境和表面充电效应研究. 合肥: 中国科学技术大学. 1-15(2011).

【3】Wang X L, Li C and Shao M. Technology of particles detecting. 232-274(2009).
汪晓莲, 李澄, 邵明. 粒子探测技术. 232-274(2009).

【4】Knapitsch A and Lecoq P. Review on photonic crystal coatings for scintillators. International Journal of Modern Physics A. 29(30), (2014).

【5】Hu Y L, Liu D L, Wang B et al. Characteristics of light extraction for surface-microcavity photonic crystal LED. Acta Optica Sinica. 37(6), (2017).
胡永禄, 刘道柳, 王博 等. 表面微腔光子晶体LED的光提取特性. 光学学报. 37(6), (2017).

【6】Liu M. Study of the mechanism of LED efficiency enhancement by periodical nano-scale structures. Jinan: Shandong University. 107-119(2017).
刘萌. 纳米尺度周期结构提高LED发光效率机制的研究. 济南: 山东大学. 107-119(2017).

【7】Liang W Y, Zhong J Y, Xu H T et al. Tailoring the performance of semitransparent organic solar cells by tandem one-dimensional photonic crystals. Acta Photonica Sinica. 47(8), (2018).
梁文跃, 钟锦耀, 徐海涛 等. 利用叠层一维光子晶体调控半透明有机太阳能电池的性能. 光子学报. 47(8), (2018).

【8】Kronberger M, Auffray E and Lecoq P. Probing the concepts of photonic crystals on scintillating materials. IEEE Transactions on Nuclear Science. 55(3), 1102-1106(2008).

【9】Pignalosa P, Liu B, Chen H et al. Giant light extraction enhancement of medical imaging scintillation materials using biologically inspired integrated nanostructures. Optics Letters. 37(14), 2808-2810(2012).

【10】Zhu Z C, Liu B, Cheng C W et al. Enhanced light extraction efficiency for glass scintillator coupled with two-dimensional photonic crystal structure. Optical Materials. 35(12), 2343-2346(2013).

【11】Zhu Z C, Liu B, Cheng C W et al. Improved light extraction efficiency of cerium-doped lutetium-yttrium oxyorthosilicate scintillator by monolayers of periodic arrays of polystyrene spheres. Applied Physics Letters. 102(7), (2013).

【12】Liu B, Chen H, Gu M et al. Scintillators boosted by nanophotonics. Physics. 43(4), 254-262(2014).
刘波, 陈鸿, 顾牡 等. 闪烁体与光子人工微结构. 物理. 43(4), 254-262(2014).

【13】Zhu Z C, Liu B, Cheng C W et al. Improved light extraction of LYSO scintillator by the photonic structure from a layer of anodized aluminum oxide. Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment. 786, 1-4(2015).

【14】Knapitsch A, Auffray E, Fabjan C W et al. Effects of photonic crystals on the light output of heavy inorganic scintillators. IEEE Transactions on Nuclear Science. 60(3), 2322-2329(2013).

【15】Chen M. Study on application of enhancing the light output of scintillator based on micro-nano fabrication. Shanghai: University of Chinese Academy of Sciences. 9-21(2015).
陈媚. 基于微纳加工的闪烁体表面修饰技术应用探索. 上海: 中国科学院大学. 9-21(2015).

引用该论文

Lecheng Huang,Guangyi Wang,Yuxiong Xue,Shengsheng Yang. 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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