标题： 克服自由运行双梳干涉仪中的噪声跟踪带宽限制 显示英文标题

标题： Overcoming the noise-tracking-bandwidth limits in Free-running Dual-Comb Interferometry

摘要： 我们提出了一种简单的方法，以扩展自由运行双梳干涉测量中自校正算法的噪声跟踪带宽，利用相干谐波增强的双梳光谱技术。 作为概念验证，我们采用了这种新架构和传统架构对$\text{H}^{13}\text{C}^{14}\text{N}$气体池进行自由运行双梳光谱测量，在相同的12.5 MHz光谱分辨率下，展示了跟踪带宽提高了20倍。 由于这种方法通过在干涉图周期内生成谐波中心脉冲来提高跟踪带宽，因此将跟踪带宽与重复率差分开，从而避免了光谱采集带宽的缩小。 这显著拓宽了自由运行双梳光谱学的前景。 显示英文摘要

摘要： We present a straightforward method to extend the noise-tracking bandwidth for self-correction algorithms in free-running dual-comb interferometry, leveraging coherent-harmonic-enhanced dual-comb spectroscopy. As a proof of concept, we employed both this novel architecture and a conventional one to perform free-running dual-comb spectroscopy of a $\text{H}^{13}\text{C}^{14}\text{N}$ gas cell, demonstrating a 20-fold increase in tracking bandwidth at the same spectral resolution of 12.5 MHz. Since this approach improves the tracking bandwidth by generating harmonic centerbursts within an interferogram period, it decouples the tracking bandwidth from the repetition rate difference, thus avoiding spectral acquisition bandwidth narrowing. This significantly broadens the outlook for free-running dual-comb spectroscopy.