Momentum-space crystal in narrow-line cooling of 87Sr*

Project supported by the National Natural Science Foundation of China (Grant Nos. 11474282 and 61775220), the Key Research Project of Frontier Science of the Chinese Academy of Sciences (Grant No. QYZDB-SSW-JSC004), and the Strategic Priority Research Program of the Chinese Academy of Sciences (Grant No. XDB21030100).
Han Jian-Xin1, 2, Lu Ben-Quan1, Yin Mo-Juan1, Wang Ye-Bing1, 2, Xu Qin-Fang1, Lu Xiao-Tong1, 2, Chang Hong1, 2, †
       

Numerical calculations of the MSC based on narrow-line cooling (5s2)1S0–(5s5p)3P1 (689 nm), showing the final velocity distribution for various initial velocities and the horizontal spatial distribution of the MSC at an interaction time of 20 ms. The distribution of final velocity versus initial velocity is shown for saturation factors of (a) s = 30, (b) s = 100, and (c) s = 300. Panels (d)–(f) show the corresponding spatial distributions of the MSC with those saturation factors. The black solid, red dot, and blue dash lines show data for detuning frequencies of 120 kHz, 140 kHz, and 160 kHz, respectively, at an initial atomic temperature of 5 μK.