相关实验视频

Updated: Jun 5, 2025

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Resonance Fluorescence of an InGaAs Quantum Dot in a Planar Cavity Using Orthogonal Excitation and Detection

Published on: October 13, 2017

辐射和外接的表面格子共振绿色 LEDs 排放LED

Mohamed S Abdelkhalik¹, Aleksandr Vaskin¹, Toni López²

¹Department of Applied Physics and Science Education, and Eindhoven Hendrik Casimir Institute, P.O. Box 513, 5600 MB Eindhoven, The Netherlands.

Nanophotonics (Berlin, Germany)

|December 5, 2024

概括

研究人员为化 (InGaN) 发光二极管 (LED) 开发了等离子金属表面. 这项创新可以控制光线的方向,并将效率提高5倍,消除了对二次光学的需求.

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
纳米技术纳米技术

背景情况:

发光二极管 (LED) 通常具有兰伯特发射,需要二次光学来控制特定应用的光.
定制LED排放对于优化各种应用中的性能至关重要.

研究的目的:

为了在LED的InGaN量子井中引入等离子金属表面.
为了控制远场辐射的方向性,并提高光收集效率.

主要方法:

通过InGaN多个量子井 (MQW) 和 (Al) 纳米盘阵列之间的近场合利用了表面晶格共振 (SLR).
采用富里埃显微镜来分析角光发光发射模式.
根据互惠原则进行数值计算.

主要成果:

证明了角光发光的发射模式是可调整的,由 metasurface 格子常数.
通过整合Al元表面,通过集成的外联光强度实现了5倍的增强.
数字计算显示出与实验数据的良好一致.

结论:

等离子元表面有效地控制LED发射方向,没有二次光学.
这种方法避免了GaN的后蚀刻,提供了一种可行的方法来增强微型LED中的光产生.

关键词:

这是一个SLR镜头.发光的光线辐射.塑制剂的使用方法 μLEDs 是一个LED.

更多相关视频

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

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

Local Field Fluorescence Microscopy: Imaging Cellular Signals in Intact Hearts

Published on: March 8, 2017

相关概念视频

Bewley Lattice Diagram

Bewley Lattice Diagram

The Bewley lattice diagram, developed by L. V. Bewley, effectively organizes the reflections occurring during transmission-line transients. It visually represents how voltage waves propagate and reflect within a transmission line, making it easier to understand the complex interactions that occur.

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence: Fluorescence and Phosphorescence

Photoluminescence is a process where a molecule absorbs light energy and re-emits it in the form of light. This phenomenon occurs when a substance absorbs photons, promoting its electrons to higher energy level excited states, followed by a relaxation process in which the electrons return to their original ground state energy levels and emit light. Photoluminescence is widely observed in various materials, including semiconductors, and organic and inorganic compounds.
A pair of electrons in a...