Systematic optimization of laser cooling of dysprosium

Systematic optimization of laser cooling of dysprosium
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镝激光冷却的系统优化

DOI:
10.1007/s00340-018-6981-2
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发表时间:
2018
期刊:
Applied Physics B
影响因子:
--
通讯作者:
Patrick Windpassinger
Patrick Windpassinger
中科院分区:
--
文献类型:
--
作者:
Florian Mühlbauer;Niels Petersen;Carina Baumgärtner;Lena Maske;Patrick Windpassinger

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本文报道了一种冷却和捕集中性镝的装置。我们表征和优化我们的塞曼较慢和二维糖蜜冷却的原子束的性能,通过多普勒光谱在626 nm处的136 kHz宽过渡。此外,我们展示了表征和优化程序的磁光阱(MOT)的加载阶段,通过边带调制增加有效的激光线宽。优化后的MOT压缩阶段,我们冷却和捕获的原子在3秒内在MOT在9K的温度和相空间密度,这构成了一个理想的起点加载原子到一个光学偶极阱和随后的强制蒸发冷却。
We report on an apparatus for cooling and trapping of neutral dysprosium. We characterize and optimize the performance of our Zeeman slower and 2D molasses cooling of the atomic beam by means of Doppler spectroscopy on a 136 kHz broad transition at 626 nm. Furthermore, we demonstrate the characterization and optimization procedure for the loading phase of a magneto-optical trap (MOT) by increasing the effective laser linewidth by sideband modulation. After optimization of the MOT compression phase, we cool and trap up toatoms within 3 seconds in the MOT at temperatures of 9K and phase space densities of, which constitutes an ideal starting point for loading the atoms into an optical dipole trap and for subsequent forced evaporative cooling.
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