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产生漏电模式共振和损耗模式共振与相同的光学平台

Zhihong Li, Yongchang Zhang, Xinxin Jin

|January 29, 2025

概括

泄漏模式共振 (L^eMR) 和损失模式共振 (L^oMR) 是不同的表面波. 这项研究澄清了它们的兴奋和感觉性能,揭示了L^eMR.

科学领域:

* 光子学和纳米光子学
* 表面等离子体极光子
* * 光学传感器进行传感

背景情况:

*泄漏模式共振 (L^eMR) 和损失模式共振 (L^oMR) 是不同的表面波现象.
* 这些共振通常会混,因此需要在它们的激发和感觉应用方面进行明确区分.
*了解它们的独特特性对于开发先进的光学传感平台至关重要.

研究的目的:

*全面研究和区分L^eMR和L^oMR的激发机制.
* 为了比较L^eMR和L^oMR的传感性能,用于周围折射率 (RI) 检测.
*分析不同膜波导配置对这些共振的影响.

主要方法:

*采用严格的转移矩阵方法进行理论分析.
*模拟和分析了带各种膜类型 (非吸收,吸收,金) 的镜膜包围平台.
*研究了L^eMR和L^oMR的光谱特征和折射率灵敏度.

主要成果:

*在所有配置中观察到退化的L^eMR,而偏振依赖的L^oMR则出现在吸收和金膜中.
*L^oMR的出现取决于落灯的临界角度.
*L^eMR显示了广泛的RI灵敏度,在光学对称的配置中是最佳的,而L^oMR仅显示了围绕RI的灵敏度.

结论:

*L^eMR和L^oMR表现出不同的激发机制和光谱行为.
*L^eMR在片材料选择方面提供了灵活性和广泛的RI传感范围.
*L^oMR提供更窄的带宽,适合特定的RI检测范围.

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