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旋转和轨道角动量激光来自相梯度等离子网格

Chuchuan Hong¹, Zhaoyun Zheng¹, Shreya K Patel¹

¹Department of Chemistry, Northwestern University, Evanston, IL, 60208, USA.

Nature communications

|November 26, 2025

概括

研究人员开发了可调节激光发射的等离子体腔. 这一突破使得对极化和光束配置的同时控制成为可能,通过在单个腔内对光的特性进行工程来推进光学技术.

科学领域:

光学和光子学在光学和光子学.
材料科学材料科学材料科学
纳米技术纳米技术

背景情况:

对光学技术来说,控制极化,波浪和激光发射的方向性至关重要.
这些特征在单个腔体内独立的可调性仍然是一个重大挑战.
介电超表面提供波浪控制,但往往缺乏高质量的腔模式用于激光.

研究的目的:

为了证明能够支持相梯度格子共振的等离子腔.
为了实现激发子和可调节激光器的奇拉腔模式之间的强合.
为了能够同时控制激光束中的自旋和轨道角动量.

主要方法:

使用等离子体腔来支持相梯度格子共振.
使用化 (CdSe) 纳米板块进行激子合.
工程局部化等离子体来操纵相位奇点和几何相位.

主要成果:

在工程里埃空间位置上实现了统一的圆极化.
证明了强烈的激子-腔合,产生光发光与接近单元的奇拉性.
从可调节角度的多个光束获得低值,同时激光.

结论:

等离子腔可以支持用于激光发射的工程化相梯度格子共振.
强大的合使得能够产生具有可调节性质的奇拉光.
这项工作突显了局部化等离子体在精确控制光角动量方面的潜力.

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