| 长波量子阱红外光电探测器金属光栅耦合的研究——基于金属表面等离子效应 |
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| 引用本文： | 翁钱春,李梁,陈俊,温洁,熊大元. 长波量子阱红外光电探测器金属光栅耦合的研究——基于金属表面等离子效应[J]. 红外与毫米波学报, 2011, 30(5): 415-418 |
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| 作者姓名： | 翁钱春 李梁 陈俊 温洁 熊大元 |
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| 作者单位： | 1. 华东师范大学信息科学技术学院,极化材料与器件教育部重点实验室,上海200241
2. 华东师范大学信息科学技术学院,极化材料与器件教育部重点实验室,上海200241;信息功能材料国家重点实验室,上海200050 |
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| 基金项目： | 信息功能材料国家重点实验室开放课题资助项目; 科技部重大项目(2006CB932802和2011CB932903); 上海市科委资助项目(078014194) |
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| 摘 要： | 采用时域有限差分法研究了二维金属光栅量子阱红外探测器的电磁场分布,研究表明充分利用金属表面等离子效应可显著提高量子阱红外探测器光耦合效率.研究还表明,对于8μm长波量子阱红外探测器,金属光栅结构选取圆孔直径与光栅周期比为0.8 ～0.9是最有益的,此时可获得最大的光耦合效率.
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| 关 键 词： | 量子阱红外探测器 二维金属光栅 时域有限差分(FDTD) 金属表面等离子效应 |
| 收稿时间： | 2010-10-22 |
| 修稿时间： | 2010-12-08 |
The metal grating coupling of long-wavelength quantum well infrared photodetectors: surface plasmon effect |
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| WENG Qian-Chun,LI Liang,CHEN Jun,WEN Jie and XIONG Da-Yuan. The metal grating coupling of long-wavelength quantum well infrared photodetectors: surface plasmon effect[J]. Journal of Infrared and Millimeter Waves, 2011, 30(5): 415-418 |
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| Authors: | WENG Qian-Chun LI Liang CHEN Jun WEN Jie XIONG Da-Yuan |
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| Affiliation: | Key Labroratory of Polar Materials and Devices, Ministry of Education, East China Normal University,Key Labroratory of Polar Materials and Devices, Ministry of Education, East China Normal University,Key Labroratory of Polar Materials and Devices, Ministry of Education, East China Normal University,Key Labroratory of Polar Materials and Devices, Ministry of Education, East China Normal University and Key Labroratory of Polar Materials and Devices, Ministry of Education, East China Normal University |
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| Abstract: | The distribution of electromagnetic field of 2D metal grating in the Long-Wavelength Quantum Well Infrared Photodetectors (LW-QWIPs) was studied by Finite Time Domain Method (FDTD). The result shows that making good use of the surface plasmons can remarkably improve the optical coupling efficiency in the LW-QWIPs. It also shows that using a metal grating with the ratio of the hole diameter to the grating period ranged from 0.8 to 0.9, optimal optical coupling can be achieved. |
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| Keywords: | QWIPs 2D metal grating FDTD surface plasmons |
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