论文标题
缓冲液冷却钡单氟化钡分子的饱和吸收光谱
Saturated absorption spectroscopy of buffer-gas-cooled Barium monofluoride molecules
论文作者
论文摘要
我们报告了对4〜k低温细胞中的缓冲 - 加速器冷 - 冷 - 冷 - 冷 - 冷 - 冷 - 冷 - 冷水钡分子（BAF）分子的饱和吸收光谱的实验研究。获得的光谱具有19〜MHz的分辨率，比吸收光谱中观察到的要小得多，清楚地解决了高精细转变。此外，我们使用这些高分辨率光谱来适合激动$ a（v = 0）$状态的超精细分组，并找到激光 - 冷 - 与相关的$ A^2π_^2π_{1/2}（v = 0，j = 1/2， +）$状态的超精细分裂，比以前的theeret theeret decret batter theeRet theeRet theeret theeRet theeRet theoret nater theeRet theeret bead。这为BAF分子的激光冷却提供了重要的缺失信息。
We report an experimental investigation on the Doppler-free saturated absorption spectroscopy of buffer-gas-cooled Barium monofluoride (BaF) molecules in a 4~K cryogenic cell. The obtained spectra with a resolution of 19~MHz, much smaller than previously observed in absorption spectroscopy, clearly resolve the hyperfine transitions. Moreover, we use these high-resolution spectra to fit the hyperfine splittings of excited $A(v=0)$ state and find the hyperfine splitting of the laser-cooling-relevant $A^2Π_{1/2}(v=0, J=1/2, +)$ state is about 18 MHz, much higher than the previous theoretically predicted value. This provides important missing information for laser cooling of BaF molecules.
