非线性拓激光在非赫尔密斯哈尔丹模型上的非线性拓激光,具有更高阶角态
Optics express
|December 2, 2023
概括
非赫米特皮肤效应 (NHSE) 在三角格子上将边缘模式转换为角模式. 增加角落位置的增益创建了一个单模激光系统,从角落发出稳定的光.
科学领域:
- 拓物理学的物理.
- 凝聚物质物理学 凝聚物质物理学
- 量子光学就是量子光学.
背景情况:
- 非赫密斯皮肤效应 (NHSE) 是一种现象,在非赫密斯系统的边界上局部化扩展状态.
- 蜂网上的哈尔丹模型是一个经过充分研究的系统,具有拓性质.
- 带有收益和损失的格子引入了在赫米特系统中找不到的独特行为.
研究的目的:
- 在三角形轮的哈尔丹模型上研究非赫米蒂斯皮肤效应 (NHSE),具有收益和损失.
- 为了探索边缘模式转化为高阶角模式,由于NHSE.
- 为了演示一个单模激光系统的实现,使用角模式在一个消散格子.
主要方法:
- 在三角格子上对非赫米蒂安哈尔丹模型的理论分析.
- 数字模拟观察模式的本地化和角模式的出现.
- 将增益和损失引入到特定的格子位置,以设计所需的属性.
主要成果:
- 观察到NHSE将模式定位在格子边缘,并将其转换为更高阶的角模式.
- 它表明,NHSE甚至可以发生在只有损失的格子中,相当于有增益,损失和总损失的系统.
- 一个单模激光系统是通过添加和增益到一个消散网的三个角位来实现的.
结论:
- 该研究成功地证明了在特定的格子几何结构中通过NHSE从边形模式形成更高阶的角形模式.
- 这项研究突出了非赫米特系统中工程增损的潜力,以创造新的现象和设备.
- 拟议的系统提供了一条从角落站点向稳定的单模激光发射的途径,输出强度取决于角落模式分布.
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