金刚石纳米柱增强色心荧光收集效率研究  

Study on fluorescence collection efficiency of diamond nanopillar enhanced color center

作　　者：谭心[1,2] 贺占清 杨桥 王健 苍磊[1,2] 杜岩龙 祁晖 TAN Xin;HE Zhanqing;YANG Qiao;WANG Jian;CANG Lei;DU Yanlong;QI Hui(School of Mechanical Engineering,Inner Mongolia University of Science&Technology,Baotou 014010,China;Key Laboratory of Micro/Nano Structure Design and Manufacturing Technology,Inner Mongolia University of Science and Technology,Baotou 014010,China)

机构地区：[1]内蒙古科技大学机械工程学院,内蒙古包头014010 [2]内蒙古科技大学微纳结构设计与制造技术重点实验室,内蒙古包头014010

出　　处：《量子电子学报》2025年第2期255-264,共10页Chinese Journal of Quantum Electronics

基　　金：国家自然科学基金(62365015,61765012,51965053);国家重点研发计划(2017YFF0207200,2017YFF0207203);内蒙古自然科学基金(2023MS05047,2019MS05008,2020MS05036);内蒙古自治区直属高校基本科研业务费项目(2023RCTD011,2023YXXS012);内蒙古自治区科技创新指导项目(2017CXYD-2,KBCJ2018031);内蒙古科技大学青年基金项目(202/0303022006);内蒙古自治区高等学校科学研究项目(NJZY23082)。

摘　　要：金刚石纳米柱可以提高色心的光子发射效率,并对发射的光子有聚集作用。本文采用时域有限差分方法,分析了金刚石纳米柱直径、高度及色心位置等结构变化对纳米柱中色心Purcell因子、光子透射率和光子提取效率等参数的影响,探究了纳米柱结构增强色心发光的机理,并以色心总荧光收集量为目标,寻找最优纳米柱结构参数。研究结果表明,最优结构下色心总荧光收集量是块体金刚石的17倍,并可以用数值孔径NA=0.95的显微镜有效收集,其中纳米柱直径的尺寸误差对总荧光收集量的影响最大,但在±20 nm范围内也可达到13倍以上。本研究为金刚石色心发光增强结构的设计和制备提供了参考。Diamond nanopillars can improve the photon emission efficiency of color centers and have a focusing effect on the emitted photons.By using the time-domain finite-difference method,the effects of structural changes such as diameter,height and color center position of diamond nanopillar on parameters such as Purcell factor,photon transmittance and photon extraction efficiency of color centers in the nanopillars are studied in this work,the mechanism of the nanopillar structure enhancing the luminescence of color centers is discussed,and the optimal nanopillar structure parameters are explored to obtain the maximal total fluorescence collection of color centers.It is found that the total fluorescence collection of color centers under the optimal structure is 17 times higher than that of bulk diamond,and can be effectively collected by a microscope with numerical aperture N_(A)=0.95.Among the structural parameters,the size error of nanopillar diameter has the greatest influence on fluorescence collection,but it can also be more than 13 times than that of bulk diamond even in the range of±20 nm.This study provides a foundation for the design and preparation of diamond color-centered luminescence enhanced structure.

关 键 词：量子光学 荧光增强 时域有限差分方法 纳米柱 金刚石 

分 类 号：TN252[电子电信—物理电子学]