Efficient stimulated slowing and cooling of the magnesium fluoride molecular beam
Efficient stimulated slowing and cooling of the magnesium fluoride molecular beam
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DOI：
10.1088/0953-4075/48/8/085302
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发表时间：
2015-03
期刊：
影响因子：
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通讯作者：
D. Dai;Yong Xia;Yinfei Fang;Liang Xu;Yanning Yin;Xingjia Li;Xiuxiu Yang;J. Yin
中科院分区：
文献类型：
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作者：
D. Dai;Yong Xia;Yinfei Fang;Liang Xu;Yanning Yin;Xingjia Li;Xiuxiu Yang;J. Yin
我们从理论上研究了双原子氟化镁分子束在高强度双色驻光波中具有近循环跃迁的受激光力减速和冷却的可能性。由于光学双色力（BCF）在具有内部简并的近循环跃迁中的行为，考虑了加权简并和力折减因子，并且两级光学布洛赫方程可以估计BCF的实际行为。我们的模拟表明，超过自发力2.8倍的受激力可以使分子束在厘米级距离内减慢至数ms−1，并且这种减慢机制可以消除分子束纵向减速过程中多普勒频移的补偿。
We theoretically investigate the possibility of stimulated light force deceleration and cooling of the diatomic magnesium fluoride molecular beam with near-cycling transitions in the bichromatic standing light wave of high intensity. The weighted degeneracy and force reduction factor are considered due to the behavior of the optical bichromatic force (BCF) in near-cycling transitions with internal degeneracies, and the two-level optical Bloch equations can estimate the actual behavior of the BCF. Our simulation shows that the stimulated force exceeding the spontaneous force by a factor of 2.8 can slow down the molecular beam to several m s−1 within centimeter-scale distance, and this slowing mechanism can eliminate the need of compensation of Doppler shift during the longitudinal deceleration of the molecular beam.