| 基于表面等离激元的长波QWIP光栅优化 |
| |
| 引用本文： | 王国东,倪璐,朱红伟,王赛丽.基于表面等离激元的长波QWIP光栅优化[J].应用光学,2014,35(5):785-788. |
| |
| 作者姓名： | 王国东 倪璐 朱红伟 王赛丽 |
| |
| 作者单位： | 1.河南理工大学 电气工程与自动化学院,河南 焦作 454003 |
| |
| 基金项目： | 国家自然科学基金(U1304608)；河南省高校青年骨干教师支持计划基金(2012GGJS-056)；河南理工大学杰出青年(52013-05) |
| |
| 摘 要： | 为了提高长波量子阱红外探测器的灵敏度及探测率，采用表面等离激元效应来提高量子阱红外探测器中二维光栅的耦合效率。利用三维时域有限差分算法，分析表面等离激元作用下，长波量子阱红外探测器中二维金属薄膜光栅参数对入射光的调制作用。计算结果表明，对于8 m的入射光，当光栅周期P=2.8 m，孔直径D=1.4 m，光栅层厚度L=0.04 m时，X Y平面内Z方向电场值最大，光栅的耦合效率最高。
|
| 关 键 词： | 量子阱红外探测器 表面等离激元 二维光栅 耦合效率 |
| 收稿时间： | 2014/3/27 |
Grating optimization of long-wavelength QWIP based on surface plasmon |
| |
| Institution: | 1.School of Electrical Engineering and Automation,Henan Polytechnic University,Jiaozuo 454003,China |
| |
| Abstract: | In order to improve the sensitivity and detectivity of the long-wavelength quantum well infrared photodetector (QWIP) ,the surface plasmon was adopted to enhance the optical coupling efficience of two-dimensional grating .The modulation effects of the 2-D metal film grating parameters in long-wavelength QWIP on the incident light were analyzed by using the 3-D finite-difference time-domain (FDTD) algorithm based on surface plasmon. Calculation results shown that the electric field along the Z direction reaches its maximum in the X-Y plane when the grating parameters were taken as P=2.8 m , D=1.4 m and L=0.04 m for 8 m incident light. |
| |
| Keywords: | QWIP surface plasmon polaritons (SPPs) 2-D grating coupling efficiency |
|
| 点击此处可从《应用光学》浏览原始摘要信息 |
| 点击此处可从《应用光学》下载免费的PDF全文 |
