论文标题
在多原子分子中建立几乎封闭的循环跃迁
Establishing a nearly closed cycling transition in a polyatomic molecule
论文作者
论文摘要
我们研究了极性自由基钙一多氧化钙（CAOH）中的光学循环，并建立了散射$ \ sim $$ 10^4 $光子的实验路径。我们在$ \ sim10^{ - 4} $ evelp上报告了rovibronic的分支比率测量值，并观察到具有非零振动角动量的弯曲模式。计算与这些测量值非常吻合，并预测了其他衰减途径。此外，我们执行$ \ widetilde {\ text {x}} \，^2σ^+（12^00）$和$ \ widetilde {\ text {x}}} \，^2σ^+（12^20）$ hybrid振动态的高分辨率光谱。这些进步为辐射放慢，3D磁磁捕获和caOH的亚多普勒冷却建立了一条路径。
We study optical cycling in the polar free radical calcium monohydroxide (CaOH) and establish an experimental path towards scattering $\sim$$10^4$ photons. We report rovibronic branching ratio measurements with precision at the $\sim10^{-4}$ level and observe weak symmetry-forbidden decays to bending modes with non-zero vibrational angular momentum. Calculations are in excellent agreement with these measurements and predict additional decay pathways. Additionally, we perform high-resolution spectroscopy of the $\widetilde{\text{X}}\,^2Σ^+(12^00)$ and $\widetilde{\text{X}}\,^2Σ^+(12^20)$ hybrid vibrational states of CaOH. These advances establish a path towards radiative slowing, 3D magneto-optical trapping, and sub-Doppler cooling of CaOH.
