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一个单层半导体的光学增益频谱和封闭因子在一个超高质量的空腔中

Tianhua Ren^1,2, Junyong Wang^3,4, Kaizhen Han^1,2

¹Department of Electrical and Computer Engineering, National University of Singapore, 1 Engineering Drive 2, Singapore 117576, Singapore.

|December 8, 2023

概括

研究人员准确地测量了二维 (2D) 半导体的吸收系数,如二硫化物 (WS2) 使用微盘腔. 这揭示了关于他们在芯片上激光器的增益机制的关键细节.

科学领域:

材料科学材料科学材料科学
光电学是指光电子产品.
纳米技术纳米技术

背景情况:

二维 (2D) 半导体是芯片上连贯光源的有希望的增强材料.
由于缺少模态增益和限制因子数据,对2D材料的精确增益机制尚不完全了解.

研究的目的:

开发一种用于直接确定单层WS2的吸收系数的新方法.
准确测量2D半导体微腔中的封闭系数.

主要方法:

在范德瓦尔斯微型磁盘腔中对窃窃私语的画廊模式的描述.
利用高质量系数 (2.5 × 10^4) 腔进行精确的光学测量.
吸收系数频谱和限制因子的实验分辨率.

主要成果:

单层WS2的吸收系数直接以高精度确定.
刺激性增益被证明可以在室温下将WS2吸收系数降低2 × 10^4 cm^-1.
实验性限制因子测量与理论预测一致.

结论:

这项研究为了解基于2D半导体的激光器的增益机制提供了必要的数据.
开发的方法可以准确地描述2D材料中的光学特性,用于光电子设备的开发.

关键词:

TMD是什么意思 TMD是什么意思吸收吸收吸收吸收限制因素是限制因素.获取获取获取获取视觉腔中的光学.质量因素是质量因素.

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