论文标题
弱绑定的$^{87} rb_ {2} $分子的光谱光谱接近$ 5p_ {1/2} +5S_ {1/2} $ threshold bose-einstein Condens中的光学bragg散射
Photoassociation spectroscopy of weakly bound $^{87}Rb_{2}$ molecules near $5P_{1/2} +5S_{1/2}$ threshold by optical Bragg scattering in Bose-Einstein condensates
论文作者
论文摘要
我们将$^{87} rb $ bose-einstein冷凝物（BEC）的高分辨率光相结合（PA）光谱汇总到激发的分子状态附近，附近的分离极限$ 5p_ {1/2} +5s_ {1/2} $ 5S_ {1/2} $通过光学bragg散射。由于BEC中的光学BRAGG散射的检测具有较高的信号噪声比，因此我们在$ \ \ pm1 $ GHz范围内获得了高分辨率PA谱，接近$ 5P_ {1/2} +5S_ {1/2} $的分解极限。我们将结果与陷阱丢失的常规方法进行了比较，并表明结果彼此吻合很好。观察到激发分子状态的许多有趣现象，例如光诱导的频移和原子型从$ | f = 1 \ rangle $到$ | f^{\ prime} = 2 \ rangle $的异常强结合分子线。以前从未报告过观察到的激发分子状态在$ \ pm1 $ ghz范围内的$ 5p_ {1/2} +5S_ {1/2} $的分离限制范围内从未报告过，这将有助于进一步改善离解限限制附近的远距离绑定状态模型。
We report the high resolution photoassociation (PA) spectroscopy of a $^{87}Rb$ Bose-Einstein condensate (BEC) to excited molecular states near the dissociation limit of $5P_{1/2} +5S_{1/2}$ by optical Bragg scattering. Since the detection of optical Bragg scattering in BEC has a high signal-noise ratio, we obtain the high resolution PA spectrum of excited molecular states in the range of $\pm1$ GHz near the dissociation limit of $5P_{1/2} +5S_{1/2}$. We compare the results with the conventional method of trap loss and show that the results agree each other very well. Many interesting phenomena of excited molecular states are observed, such as light-induced frequency shift and the anomalous strong bound molecular lines at the atomic transition from $|F=1\rangle$ to $|F^{\prime}=2\rangle$. The observed excited molecular states in the range of $\pm1$ GHz near the dissociation limit of $5P_{1/2} +5S_{1/2}$ are never reported before, which will help to further improve the long range bound state models near the dissociation limit.
