Laser cooling by sawtooth-wave adiabatic passage
Laser cooling by sawtooth-wave adiabatic passage
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DOI：
10.1103/physreva.98.023404
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发表时间：
2018-08-06
影响因子：
2.9
通讯作者：
Holland, Murray J.
中科院分区：
文献类型：
--
作者：
Bartolotta, John P.;Norcia, Matthew A.;Holland, Murray J.
我们对最近演示的一种冷却方法进行了理论分析。两能级粒子在与反向传播的激光束相互作用时经历连续的绝热传输，而反向传播的激光束被反复扫过跃迁频率。我们发现，具有窄线宽跃迁的粒子可以冷却到接近反冲极限。与多普勒冷却相比，这种冷却机制减少了对自发辐射的依赖，因此有望应用于没有闭合循环跃迁的系统，如分子。
We provide a theoretical analysis for a recently demonstrated cooling method. Two-level particles undergo successive adiabatic transfers upon interaction with counterpropagating laser beams that are repeatedly swept over the transition frequency. We show that particles with narrow linewidth transitions can be cooled to near the recoil limit. This cooling mechanism has a reduced reliance on spontaneous emission compared to Doppler cooling, and hence shows promise for application to systems lacking closed cycling transitions, such as molecules.