中国激光, 2020, 47 (6): 0601011, 网络出版: 2020-06-03
冷原子成像谱仪中靶表征及光电离研究 下载: 1201次封底文章
Target Characterization and Photoionization Study in Cold Atom Imaging Spectrometer
图 & 表
图 4. 吸收成像法探测结果。(a)吸收图像;(b)参考图像;(c)背景图像;(d)光学厚度图像
Fig. 4. Detection results of absorption imaging method. (a) Absorption image; (b) reference image;(c) background image; (d) optical thickness image
图 5. 原子团密度测量时序控制图(虚线表示开启,实线表示关闭)
Fig. 5. Imaging sequence control for density measurement (dotted line means opening and solid line means closing)
图 7. 不同时刻原子团分布,与仪器方向相对应。(a) 2 ms时刻的原子团分布;(b) 2 ms时刻原子团在y方向大小的高斯拟合;(c) 2 ms时刻原子团在z方向大小的高斯拟合;(d) 11 ms时刻的原子团分布;(e) 11 ms时刻原子团在y方向大小的高斯拟合;(f) 11 ms时刻原子团在z方向大小的高斯拟合
Fig. 7. Atomic mass distributions at different times, corresponding to the direction of the instrument. (a) Distribution of atomic group at 2 ms; (b) Gaussian fitting of atomic group at 2 ms in y direction; (c) Gaussian fitting of atomic group at 2 ms in z direction; (d) distribution of atomic group at 11 ms; (e) Gaussian fitting of atomic group at 11 ms in y direction; (f) Gaussian fitting of atomic group at 11 ms in z direction
图 8. 热蒸气靶和3D MOT靶的动量谱(虚线为热蒸气靶的Rb+的动量分布,右侧纵坐标轴为热蒸气靶的计数;实线表示3D MOT靶Rb+的TOF谱和动量分布,左侧纵坐标轴表示3D MOT靶的计数,上方横坐标轴标示了3D MOT靶的飞行时间)
Fig. 8. Momentum spectra of hot vapor target and 3D MOT target (dotted line is the momentum distribution of Rb+ of hot vapor target, and right vertical axis is the counts of hot vapor target; solid line is the TOF spectrum and momentum distribution of Rb+ of 3D MOT target, left vertical axis is the counts of 3D MOT target, and the horizontal axis on the top is the TOF of 3D MOT target)
图 9. molasses靶与强场相互作用后的Rb+动量分布。(a) x、z方向的动量分布;(b)线性坐标下z方向的动量分布;(c) log坐标下z方向的动量分布
Fig. 9. Rb+ momentum distribution of molasses target after interaction with the strong field. (a) Momentum distribution in x and z directions; (b) momentum distribution in z direction in linear coordinates; (c) momentum distribution in z direction in log coordinates
马祎璇, 李任远, 袁俊阳, 孟秋香, 马欢玉, 阮舒舒, 张逸竹, 阎天民, 沈镇捷, 王新成, 江玉海. 冷原子成像谱仪中靶表征及光电离研究[J]. 中国激光, 2020, 47(6): 0601011. Ma Yixuan, Li Renyuan, Yuan Junyang, Meng Qiuxiang, Ma Huanyu, Ruan Shushu, Zhang Yizhu, Yan Tianmin, Shen Zhenjie, Wang Xincheng, Jiang Yuhai. Target Characterization and Photoionization Study in Cold Atom Imaging Spectrometer[J]. Chinese Journal of Lasers, 2020, 47(6): 0601011.