相关实验视频

Updated: May 1, 2026

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Design, Fabrication, and Experimental Characterization of Plasmonic Photoconductive Terahertz Emitters

Published on: July 8, 2013

通过全Si等离子体热电子探测器进行近红外偏振敏感检测

Shuoqiu Tian^1,2, Wentao Yuan^1,2, Yu Yu³

¹Nanolithography and Application Research Group, School of Information Science and Technology, Fudan University, Shanghai 200433, China.

|October 9, 2024

概括

本研究介绍了一种全近红外探测器,用于极化敏感的光电子检测. 它利用等离子热电子生成和优化的异性离子变极表面来实现高性能.

科学领域:

光电学是指光电子产品.
材料科学材料科学材料科学
塑制剂是一种塑制剂.

背景情况:

对极化敏感的检测对于各种光学应用至关重要.
现有的探测器通常面临着灵敏度和光谱范围的限制.
基于的设备提供了具有成本效益和综合解决方案的潜力.

研究的目的:

开发一个极化敏感的光电子探测器,使用近红外 (NIR) 范围内的.
通过先进的设备架构和超表面设计来提高内部量子效率 (IQE).
通过外部偏差来研究光电子响应的可调性.

主要方法:

使用的等离子热电子生成和内部光辐射效应.
设计和结构优化了一个异性质的超表面.
使用有限差异时间域 (FDTD) 模拟来优化设备.
进行光电子测量以描述设备性能.
开发了一个IQE估计的理论模型.

主要成果:

在1.45μm时达到80%的最大光学吸收率,光学分辨率为120.
已证明的峰值响应率为51.2 mA/W,探测能力为8.05 × 10^10 cm Hz^1/2/W,在1.45 μm.
获得了35nm的高极化光电流比在1.55μm时.
展示了可调节的光电子响应与后门偏差.

结论:

在NIR范围内成功展示了一个极化敏感的全Si探测器.
经过优化的异性质超表面显著提高了IQE和设备性能.
开发的理论模型为未来热电子探测器技术的改进提供了途径.

关键词:

一个天线/Si纳米线 metasurface.塑热电子光探测器热电子光探测器极化光电流比率极化光电流比率极化敏感的检测检测器短红外波长短的红外波长.

更多相关视频

Optical Detection of E. coli Bacteria by Mesoporous Silicon Biosensors

Optical Detection of E. coli Bacteria by Mesoporous Silicon Biosensors

Published on: November 20, 2013

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Determination of the Excitation and Coupling Rates Between Light Emitters and Surface Plasmon Polaritons

Published on: July 21, 2018

相关概念视频

Gas Chromatography: Types of Detectors-II

Gas Chromatography: Types of Detectors-II

In gas chromatography, different detectors are employed to meet specific analytical needs. These detectors are often categorized based on their detection mechanisms and the types of compounds they are best suited to analyze. Thermal Conductivity Detectors (TCD), Flame Ionization Detectors (FID), and Electron Capture Detectors (ECD) represent common categories, each with unique operating principles and applications. However, beyond these, several other detectors are designed for more specialized...

High-Performance Liquid Chromatography: Types of Detectors

High-Performance Liquid Chromatography: Types of Detectors

The role of the detectors in High-Performance Liquid Chromatography (HPLC) is to analyze the solutes as they exit from the chromatographic column. The detector recognizes the solute's property and generates corresponding electrical signals, which are converted into a readable graph of the detector's response versus elution time called a chromatogram at the computer. There are several types of HPLC detectors, each with its own advantages and limitations, depending on the analyte...

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments

Electronic Distance Measuring Instruments (EDMs) are essential tools in modern surveying, offering precise distance measurements by emitting electromagnetic signals and calculating the time required for these signals to travel to a target and return. Two primary types of signals are used in EDMs — light waves and microwaves — each suited to specific environmental and distance requirements. Light-wave-based EDMs utilize either infrared or laser light, providing high accuracy over...