Schwarz Roman, Dörscher Sören, Al-Masoudi Ali, Vogt Stefan, Li Ye, Lisdat Christian
Physikalisch-Technische Bundesanstalt, Bundesallee 100, 38116 Braunschweig, Germany.
Rev Sci Instrum. 2019 Feb;90(2):023109. doi: 10.1063/1.5063552.
We present a simple and robust laser system for two-color, narrow-line cooling on the Sr (5s)S → (5s5p)P transition. Two hyperfine lines of this transition are addressed simultaneously with light from a single laser source, using sidebands created by an electro-optical phase modulator. A tapered amplifier system provides laser powers up to 90 mW. We show that amplification does not affect the phase modulation of the laser. This compact and robust laser system offers excellent reliability. Therefore, it is especially well suited for transportable and spaceborne optical clocks. The design offers the potential to be miniaturized into a fully integrated package.
我们展示了一种用于在锶（5s）S→（5s5p）P跃迁上进行双色窄线冷却的简单且稳健的激光系统。利用电光相位调制器产生的边带，来自单个激光源的光同时作用于该跃迁的两条超精细谱线。一个锥形放大器系统可提供高达90毫瓦的激光功率。我们证明了放大不会影响激光的相位调制。这种紧凑且稳健的激光系统具有出色的可靠性。因此，它特别适合用于可运输和星载光学时钟。该设计具有小型化至完全集成封装的潜力。
