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不同基片对单量子点单光子荧光发射的调控

Modification of Single Photon Fluorescence Emission of Single Quantum Dots with Different Substrates

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摘要

采用时间相关单光子计数原理搭建荧光寿命测量光学系统,实验验证了单量子点发射荧光的单光子性。针对石英玻片、硅片、金膜等不同基片上多处具有单光子荧光发射特性的单量子点,对其发射荧光的寿命进行了测量、对比,计算了不同基片上单量子点发射荧光的衰减速率、量子产率等与量子点到基片有效距离的相关性,解释了实验数据。此外,分析了石英玻片、硅片、金膜上单量子点发射荧光的闪烁行为,结果表明不同基片对单量子点单光子荧光的闪烁与衰减速率具有调控作用。

Abstract

Optical system for measuring the fluorescence lifetime is built up according to the principle of time correlation single photon counting, and the characteristics of single photon emission of single quantum dots are verified experimentally. The fluorescence lifetime of quantum dots with single photon emission properties on different substrates of quartz glass slide, silicon wafer and gold film is measured and compared for different effective distances between quantum dots and substrates. The experimental results are explained with theoretical simulation results of correlation of fluorescence decay rate and quantum yield with effective distance. The blinking properties of single quantum dots on different substrates are recorded and analyzed. The experimental results show that different substrates can effectively modify the fluorescence blinking and fluorescence decay rate of single photon emission of single quantum dots.

Newport宣传-MKS新实验室计划
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中图分类号:O436

DOI:10.3788/cjl201845.0606005

所属栏目:光纤光学与光通信

基金项目:国家自然科学基金(61775105, 11504270)、 高等学校学科创新引智计划(B16027)

收稿日期:2017-12-19

修改稿日期:2018-01-11

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作者单位    点击查看

林雨:南开大学电子信息与光学工程学院现代光学研究所光学信息技术科学教育部重点实验室, 天津 300350
钟莹:天津大学精密仪器与光电子工程学院精密测试技术及仪器国家重点实验室, 天津 300072
刘海涛:南开大学电子信息与光学工程学院现代光学研究所光学信息技术科学教育部重点实验室, 天津 300350

联系人作者:刘海涛(liuht@nankai.edu.cn)

备注:林雨(1991—),男,硕士研究生,主要从事微纳光学方面的研究。E-mail: linyuopt@163.com

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引用该论文

Lin Yu,Zhong Ying,Liu Haitao. Modification of Single Photon Fluorescence Emission of Single Quantum Dots with Different Substrates[J]. Chinese Journal of Lasers, 2018, 45(6): 0606005

林雨,钟莹,刘海涛. 不同基片对单量子点单光子荧光发射的调控[J]. 中国激光, 2018, 45(6): 0606005

被引情况

【1】王迪,李璇,皮浩洋,杨飞,叶青,蔡海文. 相位掩模板干涉场及其对光纤光栅损耗的影响. 光学学报, 2018, 38(8): 806002--1

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