论文标题
空气充满抗谐调的空心芯纤维中汽车信号的无背景波导增强的波导增强
Background-penalty-free waveguide enhancement of CARS signal in air-filled anti-resonance hollow-core fiber
论文作者
论文摘要
我们研究了充满空气的抗谐振的空心光子晶体纤维中的连贯的反stokes拉曼光谱，也称为“左轮手枪”纤维。我们比较了振动相干的反stokes反stokes拉曼信号，n $ _2 $，2331 cm $^{ - 1} $，在环境空气中生成（无光纤），与左轮手枪纤维的2.96 cm产生。由于相互作用路径的增加，我们显示了纤维中产生的信号的170倍。值得注意的是，由于激光场和纤维覆层之间的接近零重叠，在左轮手光纤中获得的N $ _2 $信号显示出接近零的非共振背景。通过我们的研究，我们发现左右纤维性能使其成为相干拉曼光谱信号增强的理想候选者。
We study coherent anti-Stokes Raman spectroscopy in air-filled anti-resonance hollow-core photonic crystal fiber, otherwise known as 'revolver' fiber. We compare the vibrational coherent anti-Stokes Raman signal of N$_2$, at 2331 cm$^{-1}$, generated in ambient air (no fiber present), with the one generated in a 2.96 cm of a revolver fiber. We show a 170 times enhancement for the signal produced in the fiber, due to an increased interaction path. Remarkably, the N$_2$ signal obtained in the revolver fiber shows near-zero non-resonant background, due to near-zero overlap between the laser field and the fiber cladding. Through our study, we find that the revolver fiber properties make it an ideal candidate for the coherent Raman spectroscopy signal enhancement.
