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控制与纳米天线相连的量子发射器的光辐射,使用圆柱形向量束控制

Martin Montagnac¹, Yoann Brûlé², Aurélien Cuche¹

¹CEMES-CNRS, Université de Toulouse, Toulouse, France.

Light, science & applications

|September 19, 2023

概括

控制纳米环附近欧离子的光辐射可以通过操纵激发束极化来实现. 这种方法可以空间控制电磁辐射通道,为光学设备设计提供了新的可能性.

科学领域:

光子学和纳米技术的使用.
材料科学材料科学材料科学
量子光学是一种量子光学.

背景情况:

欧 (Eu³⁺) 离子的光辐射通常由纳米天线附近的光子状态 (LDOS) 的局部密度控制.
纳米环 (Si-NRs) 作为纳米天线,影响光发射特性.

研究的目的:

为了研究激发束极化对Eu3+离子光辐射的影响.
探索电磁双极辐射通道的空间控制.

主要方法:

用于激发的平面或半径极化圆柱形向量束.
进行光发光 (PL) 和拉曼散射测量.
进行了近场强度的数值模拟.

主要成果:

对Eu3+和Si-NR的PL和声映射取决于激发束偏振和Si-NR维度.
实验结果被近场强度模拟证实.
分支比率表明电磁排放通道的重新分配.

结论:

激发束极化提供了对Eu3+离子发射的空间控制,补充了LDOS效应.
切换激光极化可以控制电磁双极辐射.
这项研究使优化设备几何学能够用于增强激发和排放过程.

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