物理学报2019，Vol.68Issue(4)：114-126,13.DOI:10.7498/aps.68.20181655
极性分子的激光冷却及囚禁技术
Laser cooling and trapping of polar molecules
摘要
Abstract
Different from atoms, molecules have unique properties, and play an important role in the research of atomic, molecular and optical physics. Cold molecules have important applications in science and have been studied for more than 20 years. But traditional methods, such as the Stark decelerator, have hit a bottleneck: it is hard to increase the phase space density of molecules. Extending the direct laser-cooling technique to new molecular species has recently been a hot topic and also a big challenge. In this review paper, on one hand, we make a brief review to recent progresses on the direct laser cooling of polar molecules. On the other hand, a demonstration on the feasibility of laser cooling BaF molecule has been experimentally illustrated, including the analysis on the molecular energy levels, measurements of the high-resolution spectroscopy, efficient pre-cooling and state preparation via buffer-gas cooling and detailed investigations on the molcule-light interactions. All these results not only pave the way for future laser-cooling and -trapping experiments, but also serve as a reference for the laser-cooling explorations on new molecular species.关键词
激光冷却/冷分子/缓冲气体冷却/光与分子相互作用Key words
laser cooling/cold molecule/buffer-gas cooling/molecule-light interaction引用本文复制引用
陈涛,颜波..极性分子的激光冷却及囚禁技术[J].物理学报,2019,68(4):114-126,13.基金项目
国家重点研发计划(批准号: 2018YFA0307200)、国家自然科学基金(批准号: 91636104) 和浙江省自然科学基金(批准号: LZ18A040001) 资助的课题. （批准号: 2018YFA0307200）
