光纤中自荧光特性在基于NV的传感应用中的表征
Characterization of Autofluorescence in Optical Fibers for NV-based Sensing Applications
AI总结：
本文研究了光纤中自荧光特性，旨在优化NV基量子传感中的光纤选择以提高灵敏度。
摘要：
光纤在各种传感应用中起着关键作用。特别是对于量子传感器，如钻石中的氮-空位（NV）中心，它们使光控制和设备微型化成为可能。然而，光纤内的荧光和散射，通常称为光纤背景、自荧光或自发光，可能在光谱上与NV中心的荧光重叠，降低信噪比，从而限制传感器灵敏度。在这里，我们研究了标准光纤的光学光谱，考虑了材料依赖性、物理影响以及其荧光随激发功率和波长的变化。我们的结果确定了具有最小不需要背景信号的光谱成分和光纤类型，指导了NV基量子传感中最佳光纤的选择。
英文摘要：
Optical fibers are crucial for guiding light in various sensing applications. Especially for quantum sensors such as the nitrogen-vacancy (NV) center in diamond, they enable light control and device miniaturization. However, fluorescence and scattering within the fiber, often referred to as fiber background, autofluorescence, or autoluminescence, can overlap spectrally with the NV centers' fluorescence, degrading the signal-to-noise ratio and thus limiting sensor sensitivity. Here, we investigate the optical spectra of standard optical fibers, considering material dependencies, physical influences, and their fluorescence scaling with excitation power and wavelength. Our results identify spectral components and fiber types with minimal unwanted background signals, guiding the selection of optimal fibers for NV-based quantum sensing.
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