中国物理B ›› 2013, Vol. 22 ›› Issue (3): 33202-033202.doi: 10.1088/1674-1056/22/3/033202
• ATOMIC AND MOLECULAR PHYSICS • 上一篇 下一篇
徐智翔a, 曲伟智a, 高然b, 胡新华b, 肖艳红a
Xu Zhi-Xiang (徐智翔)a, Qu Wei-Zhi (曲伟智)a, Gao Ran (高然)b, Hu Xin-Hua (胡新华)b, Xiao Yan-Hong (肖艳红)a
摘要: The linewidth of electromagnetically induced transparency (EIT) in a coated Rb vapor cell was studied under a magnetic field gradient. The nonlinear broadening of the EIT linewidth with the magnetic field gradient was observed. It was found that the motional averaging of the field gradient was more pronounced at higher laser intensities and larger beam sizes. In the same regime, there was a small linewidth decrease with the increasing magnetic field gradient. We have established a Monte-Carlo model, which gave results in good qualitative agreement with our experiment. Physics pictures for the above phenomena were also suggested. These results provide an understanding of the EIT linewidth behavior under the motional averaging, and should be useful for applications in quantum optics and metrology based on coated vapor cells.
中图分类号: (Line shapes, widths, and shifts)