基于等离子体的高带宽积响应GaAs msm光电探测器的综合分析

Q3 Engineering

Advances in Optoelectronics Pub Date : 2013-09-24 DOI:10.1155/2013/793253

N. Das, F. F. Masouleh, H. Mashayekhi

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引用次数: 10

摘要

采用二维时域有限差分(FDTD)算法对亚波长纳米光栅增强等离子体金属-半导体-金属光电探测器(msm - pd)的光吸收特性进行了详细的数值研究。由于结构设计和器件物理参数的变化，对不同几何形状的各种器件进行了仿真和比较。优化了GaAs衬底上矩形和锥形亚波长金属纳米光栅的光栅高度和占空比等参数，并确定了它们对衍射极限下的光吸收的影响。与传统的MSM-PD相比，优化后的器件的光增强约为32.7倍。这种增强归因于近场区域的等离子体效应。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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A Comprehensive Analysis of Plasmonics-Based GaAs MSM-Photodetector for High Bandwidth-Product Responsivity

A detailed numerical study of subwavelength nanogratings behavior to enhance the light absorption characteristics in plasmonic-based metal-semiconductor-metal photodetectors (MSM-PDs) is performed by implementation of 2D finite-difference time-domain (FDTD) algorithm. Due to the structure design and changes in the device physical parameters, various devices with different geometries are simulated and compared. Parameters like nano-grating height and duty cycle (DC) are optimized for rectangular and taper subwavelength metal nanogratings on GaAs substrate and their impact on light absorption below the diffraction limits are confirmed. The calculated light enhancement is ~32.7-times for an optimized device in comparison with a conventional MSM-PD. This enhancement is attributed to the plasmonic effects in the near-field region.

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来源期刊

Advances in Optoelectronics ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： Advances in OptoElectronics is a peer-reviewed, open access journal that publishes original research articles as well as review articles in all areas of optoelectronics.