DeRose Kenneth, Deshpande Tejas, Wang Yiping, Kovachy Tim
Opt Lett. 2023 Aug 1;48(15):3893-3896. doi: 10.1364/OL.493098.
We present a laser system for performing single-photon atom interferometry on the 698 nm clock transition in ultracold strontium. We coherently combine the power of two titanium:sapphire lasers and demonstrate chirps of 200 MHz in 2.5 ms while phase-locked to an optical reference. Moreover, we demonstrate a novel, to the best of our knowledge, scheme to deliver 4 W pulsed beams to the atoms via a mode-cleaning optical fiber using active noise cancellation.
我们展示了一种用于在超冷锶中对698纳米时钟跃迁进行单光子原子干涉测量的激光系统。我们将两台钛宝石激光器的功率相干合并，并在锁相到光学参考的同时，在2.5毫秒内实现了200兆赫兹的频率啁啾。此外，据我们所知，我们展示了一种新颖的方案，通过使用有源噪声消除的模式清洁光纤向原子输送4瓦的脉冲光束。
