论文标题
完全稳定的1 GHz交钥匙频率梳子在1.56 $ $ m
Fully phase-stabilized 1 GHz turnkey frequency comb at 1.56 $μ$m
论文作者
论文摘要
对于从计时到精确光谱的许多应用，需要低噪声和高重复率光学频率梳。例如，与较低的重复率源相比，Gigahertz的重复率源大大提高了双弯曲模式中光谱的采集速度，同时仍保持足够的瞬时分辨率来解决各种条件下分子的RO振动特征。在本文中，我们介绍了在电信波长（1.56 $μ$ m）下运行的交钥匙商业1〜GHz模式激光的稳定和表征。纤维扩增和光谱扩展导致$ \ textit {f} _ {\ textit {ceo}} $的高信噪比检测和稳定，并具有438个残留相位噪声（从10 $^2 $^2 $^2 $^2 $^至10 $^7 $ Hz）。同时，我们将最近的梳子模式与腔稳定的连续波激光稳定在1.55 $μ$ m之间，并使用41 mrad的残留相位噪声（整合了10 $^2 $到10 $^7 $ hz）。这种强大的自我引用的梳子系统是由维护底层极化的纤维组件构建的，对于从增加的重复速率中受益的各种低噪声频率梳子应用将很有用。
Low noise and high repetition rate optical frequency combs are desirable for many applications from timekeeping to precision spectroscopy. For example, gigahertz repetition rate sources greatly increase the acquisition speed of spectra in a dual-comb modality when compared to lower repetition rate sources, while still maintaining sufficient instantaneous resolution to resolve ro-vibrational signatures from molecules in a variety of conditions. In this paper, we present the stabilization and characterization of a turnkey commercial 1~GHz mode-locked laser that operates at telecom wavelengths (1.56 $μ$m). Fiber amplification and spectral broadening result in the high signal-to-noise ratio detection and stabilization of $\textit{f}_{\textit{ceo}}$ with 438 mrad of residual phase noise (integrated from 10$^2$ to 10$^7$ Hz). Simultaneously, we stabilize the beatnote between the nearest comb mode and a cavity stabilized continuous-wave laser at 1.55 $μ$m with 41 mrad of residual phase noise (integrated from 10$^2$ to 10$^7$ Hz). This robust, self-referenced comb system is built with off-the-shelf polarization-maintaining fiber components and will be useful for a wide range of low noise frequency comb applications that benefit from the increased repetition rate.
