基态选择性硫化羰分子的绝热混合场取向
Adiabatic mixed-field orientation of ground-state-selected carbonyl sulfide molecules
摘要：
实验证明了硫化羰分子（OCS）在$\text{N}_{\text{up}}/\text{N}_{\text{tot}}=0.882$绝对基态下的强绝热混合场取向。在双板速度图成像光谱仪中，在非共振激光和静态电场的组合下对OCS进行了定向。通过改变激光和静电场电场，研究了转动基态从非绝热到绝热取向的转变。高于10 kV/cm的电场强度和$10^{11} \text{W/cm}^2$的激光强度，观察到的取向度达到平台。这些结果与含时薛定谔方程的计算解符合得很好。
英文摘要：
We experimentally demonstrated strong adiabatic mixed-field orientation of carbonyl sulfide molecules (OCS) in their absolute ground state of $\text{N}_{\text{up}}/\text{N}_{\text{tot}}=0.882$. OCS was oriented in combined non-resonant laser and static electric fields inside a two-plate velocity map imaging spectrometer. The transition from non-adiabatic to adiabatic orientation for the rotational ground state was studied by varying the applied laser and static electric field. Above static electric field strengths of 10 kV/cm and laser intensities of $10^{11} \text{W/cm}^2$ the observed degree of orientation reached a plateau. These results are in good agreement with computational solutions of the time-dependent Schrödinger equation.
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