外延生长III-V族绝热腔中长寿命相干声学声子
应用物理
2024-09-10 v2 介观与纳米尺度物理
摘要
我们提供了在具有高品质因数、呈现定制声子势的声子腔内部强受限相干声学声子的证据。利用GaAs/AlAs准周期超晶格，这些功能性声子势通过沿生长方向绝热改变层厚度得以实现。室温超快振动光谱揭示了约96–101 GHz范围内的离散声子能级。此外，时间分辨光致发光测量证实，声子腔显著延缓了光激发载流子的能量损失速率。这些结果凸显了能够通过同时设计电子与声子特性来弥合声子学与光电子学之间鸿沟的光声子器件的潜力。
引用
@article{arxiv.2303.02558,
title = {Long-Lived Coherent Acoustic Phonons in Epitaxially Grown III-V Adiabatic Cavities},
author = {Muhammad Hanif and Milos Dubajic and Sandeep. J. Sreerag and Rajeev N. Kini and Gavin J. Conibeer and Michael P. Nielsen and Stephen P. Bremner},
journal= {arXiv preprint arXiv:2303.02558},
year = {2024}
}
备注
In this version, we have incorporated a new section addressing the temporal dynamics of cavity phonons. Additionally, the analysis and discussion of time-resolved photoluminescence (TRPL) results have been enhanced