在等离子核非线性外二元体中增强了间隙增强的光学双稳定性
Artyom Movsisyan1, Henrik Parsamyan1
1Institute of Physics, Yerevan State University, A. Manoogian 1, Yerevan, 0025, Armenia. hparsamyan@ysu.am.
Nanoscale
|January 10, 2024
概括
这项研究探讨了非线性等离子体纳米粒子二次体中的光学双稳定性. 我们发现,考虑到局部强度变化,可以精确控制全光学开关的开关强度.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 光学是什么?光学是什么?光学是什么?
- 材料科学 材料科学 材料科学
背景情况:
- 在金属纳米粒子二次体中的局部表面等离子体共振 (LSPR) 增强了局部场,增强了非线性光学效应.
- 光学双稳定性对于全光学开关和内存设备至关重要.
- 之前的模型通常假定非线性外的折射率变化是均的.
研究的目的:
- 在具有非线性外的等离子体球形二次体中分析光学二次稳定性.
- 为了考虑不均的功率密度及其对折射率的影响.
- 调查诸如全光学开关和内存元件等二元体的潜力.
主要方法:
- 涂有相互非线性外的等离子体球形二元体的数值分析.
- 建模折射率的变化基于外内的局部强度.
- 计算散射,灭绝截面和近场强度的歇斯底里斯分支.
主要成果:
- 在3纳米间隙的二度光学稳定性中,在375kW cm-2和225kW cm-2的开关强度下,在3nm间隙的二度光学稳定性得到了实现.
- 稳定状态对应于特定的等离子体模式.
- 较小的粒子间距离减少了所需的驱动场强度.
- 非线性外显著影响光谱响应.
结论:
- 该研究展示了一种方法,通过考虑非线性等离子二次体中的局部强度变化来实现光学可视化.
- 这些二极管在全光学交换机和内存设备中的应用方面表现有前途.
- 通过优化纳米粒子间距,可以进一步降低切换强度.
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