论文标题
长期寿命的两体碰撞复合物的光激发超速RBCS分子损失
Loss of ultracold RbCs molecules via optical excitation of long-lived two-body collision complexes
论文作者
论文摘要
我们表明，在光学陷阱中，超速基态$^{87} $ rb $^{133} $ cs分子的寿命受到长期两体碰撞复合物的快速光学激发的限制。我们通过将方波调制应用于陷阱强度来部分抑制这种损失机制，从而使分子在黑暗中花费了每个调制周期的75％。通过改变调制频率，我们表明碰撞综合体的寿命为$ 0.53 \ pm0.06 $ ms。我们发现，碰撞复合体的光激发速率为$ 3^{+4} _ { - 2} \ times10^{3} $ w $^{ - 1} $ cm $^2 $ s $^2 $ s $ s $^{ - 1} $ for $λ= 1550 $ nm，导致了典型的trapap papapap intapap intapap intapap insensies for <100 ns。这些结果解释了在非反应性双重分子的实验中观察到的两体损失。
We show that the lifetime of ultracold ground-state $^{87}$Rb$^{133}$Cs molecules in an optical trap is limited by fast optical excitation of long-lived two-body collision complexes. We partially suppress this loss mechanism by applying square-wave modulation to the trap intensity, such that the molecules spend 75% of each modulation cycle in the dark. By varying the modulation frequency, we show that the lifetime of the collision complex is $0.53\pm0.06$ ms in the dark. We find that the rate of optical excitation of the collision complex is $3^{+4}_{-2}\times10^{3}$ W$^{-1}$ cm$^2$ s$^{-1}$ for $λ= 1550$ nm, leading to a lifetime of <100 ns for typical trap intensities. These results explain the two-body loss observed in experiments on nonreactive bialkali molecules.
