McLemore Charles A, Jin Naijun, Kelleher Megan L, Luo Yizhi, Lee Dahyeon, Liu Yifan, Nakamura Takuma, Mason David, Rakich Peter, Diddams Scott A, Quinlan Franklyn
Opt Lett. 2024 Aug 15;49(16):4737-4740. doi: 10.1364/OL.531169.
Vacuum-gap Fabry-Perot cavities are indispensable for the realization of frequency-stable lasers, with applications across a diverse range of scientific and industrial pursuits. However, making these cavity-based laser stabilization systems compact, portable, and rugged enough for use outside of controlled laboratory conditions has proven difficult. Here, we present a fiber-coupled 1396 nm laser stabilization system requiring no free-space optics or alignment, built for a portable strontium optical lattice clock. Based on a 2 mL vacuum-gap Fabry-Perot cavity, this system demonstrates thermal noise-limited performance and 1 × 10 fractional frequency instability. Fiber-integrated optical components have been instrumental in both advancing the field of optics and leveraging those advances across disciplines to facilitate other fields of study. This portable system represents a major step toward making the frequency stability of cavity-based systems broadly accessible.
真空间隙法布里-珀罗腔对于实现频率稳定的激光器至关重要，在各种科学和工业应用中都有广泛应用。然而，要使这些基于腔的激光稳定系统足够紧凑、便携且坚固，以在受控实验室条件之外使用，事实证明颇具难度。在此，我们展示了一种用于便携式锶光晶格钟的光纤耦合1396纳米激光稳定系统，该系统无需自由空间光学元件或对准操作。基于一个2毫升的真空间隙法布里-珀罗腔，此系统展现出热噪声限制的性能以及1×10的分数频率不稳定性。光纤集成光学元件在推动光学领域发展以及利用这些进展跨学科促进其他研究领域方面发挥了重要作用。这个便携式系统朝着使基于腔的系统的频率稳定性广泛可用迈出了重要一步。
