标题： 小分子快速减速的光学双色力前景 显示英文标题

标题： Prospects for rapid deceleration of small molecules by optical bichromatic forces

摘要： 我们考察了利用光学双色力（BCF）来显著增强小分子近循环跃迁的激光减速和冷却的可能性。 我们讨论了在具有内部简并的近循环跃迁中BCF的预期行为，然后考虑了减速氟化钙分子束的具体例子。 我们选择CaF作为原型分子，一方面是因为它有一个易于访问的近循环跃迁，另一方面是因为它非常适合超冷分子物理和化学的研究。 我们还通过在亚稳态氦原子束中进行测试，报告了对一个关键要求的实验验证，即在多能级系统中产生大的双色力。 显示英文摘要

摘要： We examine the prospects for utilizing the optical bichromatic force (BCF) to greatly enhance laser deceleration and cooling for near-cycling transitions in small molecules. We discuss the expected behavior of the BCF in near-cycling transitions with internal degeneracies, then consider the specific example of decelerating a beam of calcium monofluoride molecules. We have selected CaF as a prototype molecule both because it has an easily-accessible near-cycling transition, and because it is well-suited to studies of ultracold molecular physics and chemistry. We also report experimental verification of one of the key requirements, the production of large bichromatic forces in a multi-level system, by performing tests in an atomic beam of metastable helium.