Detuned slow light in the Doppler broadened multi-level D2 line of Rubidium.
Detuned slow light in the Doppler broadened multi-level D2 line of Rubidium.
复制标题
多普勒失谐慢光拓宽了铷的多级 D2 谱线。
作者：
Yi Chen;Xiaogang Wei;B. Ham
我们观察到基于 (87)Rb D2 线中电磁感应透明度的失谐慢光现象，该线由多普勒展宽线宽内的多个激发超精细态组成。结果表明，探针的最大群延迟出现在失谐的双光子谐振频率处。通过针对固定耦合场与邻近激发态修改多普勒展宽原子相互作用的探测脉冲的数值计算来分析观察到的失谐群延迟。实验结果与数值计算吻合良好。
We observed a detuned slow light phenomenon based on electromagnetically induced transparency in (87)Rb D2 line composed of multiple excited-hyperfine states within a Doppler-broadened linewidth. The results show that the maximum group delay of a probe occurs at off-detuned two-photon resonance frequency. The observed detuned group delay is analyzed with numerical calculations for a probe pulse interacting with the neighboring excited-states-modified Doppler broadening atoms for a fixed coupling field. The experimental results are in good agreement with the numerical calculations.