Bernal-Stacked双层石墨烯1.06微米谐振增强型光电探测器设计方法
投稿时间:2018-04-11  修订日期:2018-05-12  点此下载全文
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作者单位E-mail
牛海莎 北京信息科技大学 niuhs@buaa.edu.cn 
祝连庆 北京信息科技大学 lqzhu_bistu@sina.com 
刘凯铭 北京航空航天大学
仪器科学与光电工程学院 
 
基金项目:教育部“长江学者与创新团队发展计划”项目(IRT_16R07)资助的课题
中文摘要:石墨烯对光的吸收率较低,通过与光学谐振腔结合限制光场,可有效提高石墨烯探测器件对入射光的吸收。以电磁场传输理论为基础,推导了双层石墨烯光学谐振腔中的光场分布,建立了谐振增强型光电探测器传输矩阵数理模型,对Bernal-Stacked双层石墨烯的谐振增强型光电探测器结构参数进行数值计算,并对探测器性能进行分析。结果表明,设计的探测波长为1.06 μm谐振增强结构光电探测器,双层石墨烯的光吸收率达到96.78%,大幅提升了对微弱光信号的探测能力。
中文关键词:双层石墨烯 1  谐振增强2  探测器3  ……(一般可选3~8个,用中文表示,不用英文,分号隔开)
 
Design method of Bernal-Stacked bilayer graphene 1.06 μm resonance-enhanced photodetector
Abstract:Graphene has a low absorption rate of light. By combining with an optical resonant cavity to restrict the light field, the absorption rate of the graphene detector element can be effectively improved. Based on the theory of electromagnetic field transmission, the optical field distribution in the bilayer graphene optical resonator is deduced, a mathematical model for the transmission matrix of the resonant enhanced photodetector is established, and a resonant enhanced photodetector for the Bernal-Stacked bilayer graphene is established. The structural parameters are numerically calculated and the detector performance is analyzed. The results show that, the optical absorption rate of bilayer graphene reaches up to 96.78% for a 1.06 μm wavelength resonant enhanced photodetector, which greatly improves the detection ability of weak optical signals.
keywords:Bilayer  grapheneKeyword1, Resonance  enhancementKeyword2, PhotodetectorKeyword3
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