在可见光中的基于造的波导增强拉曼光谱在可见光中
Optics express
|March 5, 2024
概括
这项研究引入了用于可见波长的化 (SiN) 波导增强拉曼光谱 (WERS) 平台,克服了以前的限制. 该研究确定了使用WERS增强化学和生物传感的最佳配置.
科学领域:
- 分析化学 分析化学
- 材料科学 材料科学 材料科学
- 频谱学是一种光谱学.
背景情况:
- 波导增强拉曼光谱 (WERS) 对于化学和生物传感至关重要.
- 可见波长操作提供信号增强,因为逆第四功率取决于激发波长.
- 以前的可见WERS平台由于定制制造而遭受高损失和低收益.
研究的目的:
- 为了展示使用标准CMOS造工艺制造的化 (SiN) 可见WERS平台.
- 描述SiN WERS螺旋在可见波长 (532 nm和633 nm) 的性能.
- 将可见WERS性能与近红外 (NIR) WERS进行比较,并确定最佳配置.
主要方法:
- 在300毫米CMOS造厂制造SiN WERS螺旋.
- 测量传播损失,合损失,WERS信号和背景噪声.
- 对于可见和NIR波长的WERS配置的理论验证.
- 在532nm,633nm和785nm的WERS性能比较.
主要成果:
- 使用CMOS制造的功能SiN可见WERS平台的演示.
- 对532nm和633nmWERS螺旋的损失和信号特征的量化.
- 与最先进的NIR WERS平台在785 nm的距离进行比较.
- 确定可见波长操作的最佳WERS配置.
结论:
- 一个CMOS兼容的SiN平台可以实现高效的可见WERS.
- 在指纹区域,信号与背景比的最佳WERS配置为785 nm.
- 在633nm的抽最大限度地提高了斯托克斯信号,达到3000厘米-1,为特定应用提供了优势.
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