在有序和无序光子系统中使用非赫米特扰动理论优化模式的Q因子优化
Nicoletta Granchi1,2, Francesca Intonti1,2, Marian Florescu3
1Department of Physics, University of Florence, via Sansone 1, I-50019 Sesto Fiorentino, FI, Italy.
ACS photonics
|August 21, 2023
概括
我们介绍了一种使用准正常模式 (QNMs) 和复杂的自身溶解器来优化光子模式的质量因子 (Q) 的新方法. 这种方法在有序和无序的光子结构中增强了Q因子,显著改善了光物质相互作用.
科学领域:
- 光学和光学工程的光学和光学工程.
- 计算物理学的计算物理.
- 材料科学是一种材料科学.
背景情况:
- 光子共振器的质量因子 (Q) 对于传感和激光等应用至关重要.
- 在工程空洞中优化Q是众所周知的,但对于安德森局部化模式等无序介质来说却不那么重要.
- 准正常模式 (QNM) 为分析这些系统提供了一个理论框架.
研究的目的:
- 为了证明QNM理论和复杂的eigensolvers用于自动化Q因子优化的实用性.
- 将这个框架应用于有序 (L3腔) 和无序 (安德森局部化模式) 的光子环境.
- 为了实现显著的Q因子增强,并探索由此产生的模式性质.
主要方法:
- 使用准正常模式 (QNM) 作为非赫米特扰动理论.
- 在模式分析中使用有限元复杂的egensolver.
- 通过调整介电板中的孔位来进行自动化形状优化.
- 以QNM扰动公式为准确度进行基准测试.
主要成果:
- 成功优化了L3腔中的基本模式的Q因子,并考虑了所有损失机制.
- 在安德森局部化模式下,Q因子增加了3个数量级.
- 证明模式体积减少了三倍,并为优化的安德森局部化模式改变了空间定位.
- 在L3腔中展示了模态结构的轻微修改.
结论:
- 与复杂的自身溶解器相结合的QNM提供了一个强大的,自动化工具,用于光子共振器中的Q因子优化.
- 这种方法对有序和无序的光子介质都有效.
- 可以实现显著的Q因子增强,从而提高设备性能和新的模式行为.
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