无涂层光纤探头近场成像的矢量模拟：传递函数和分辨能力
Vectorial modeling of near-field imaging with uncoated fiber probes: Transfer function and resolving power
摘要：
使用精确的三维矢量模拟的辐射耦合到未涂覆的介质光纤探头，我们计算的锥形单模光纤尖在633 nm的光波长的振幅传递函数。玻璃纤维尖端的耦合效率是在宽范围的空间频率的入射辐射的开口角从30度到120度变化。在近场成像与这些提示的分辨率被认为是在直接和空间频率空间的场分布有限。详细分析了描述探测光场与近场图像之间关系的传递函数的特性。利用一个完美的尖端的重要性也进行了检查。
英文摘要：
Using exact three-dimensional vectorial simulations of radiation coupling into uncoated dielectric fiber probes, we calculate amplitude transfer functions for conical single-mode fiber tips at the light wavelength of 633 nm. The coupling efficiency of glass fiber tips is determined in a wide range of spatial frequencies of the incident radiation for opening angles varying from 30 to 120 degrees. The resolution in near-field imaging with these tips is considered for field distributions limited in both direct and spatial-frequency space. The characteristics of the transfer functions describing the relation between probed optical fields and near-field images are analyzed in detail. The importance of utilizing a perfectly sharp tip is also examined.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
