多原子分子的一维磁光阱
1D Magneto-Optical Trap of Polyatomic Molecules.
作者信息
Baum Louis, Vilas Nathaniel B, Hallas Christian, Augenbraun Benjamin L, Raval Shivam, Mitra Debayan, Doyle John M
机构信息
Harvard-MIT Center for Ultracold Atoms, Cambridge, Massachusetts 02138, USA.
Department of Physics, Harvard University, Cambridge, Massachusetts 02138, USA.
出版信息
Phys Rev Lett. 2020 Apr 3;124(13):133201. doi: 10.1103/PhysRevLett.124.133201.
We demonstrate a 1D magneto-optical trap of the polar free radical calcium monohydroxide (CaOH). A quasiclosed cycling transition is established to scatter ∼10^{3} photons per molecule, predominantly limited by interaction time. This enables radiative laser cooling of CaOH while compressing the molecular beam, leading to a significant increase in on axis beam brightness and reduction in temperature from 8.4 to 1.4 mK.
我们展示了一种对极性自由基氢氧化钙（CaOH）的一维磁光阱。建立了一个准闭合循环跃迁，每个分子能散射约10³个光子，主要受相互作用时间限制。这使得CaOH能够进行辐射激光冷却，同时压缩分子束，从而使轴上束流亮度显著增加，温度从8.4 mK降至1.4 mK。
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