Electromagnetically induced transparency in a Zeeman-sublevels <italic>Λ</italic>-system of cold <sup>87</sup>Rb atoms in free space

Electromagnetically induced transparency in a Zeeman-sublevels Λ-system of cold ⁸⁷Rb atoms in free space

Jiang Xiaojun^{1, 2}, Zhang Haichao¹, Wang Yuzhu^{1, †,}

(a)–(d) The EIT signals for different magnetic fields. In a given magnetic field, the coupling light is tuned to exact resonance with |F = 2, m_F = 0〉 → |F′ = 2, m_F = 1〉 transition. The probe light is scanned over 1 MHz for a time of 4 ms. (e) The normalized probe absorption as a function of the probe detuning. The black dots are the experimental data, and the red line is the theoretical fit. The linewidth is about 100 kHz, and the transparency depth is more than 97% and the γ₁₂ is about 1 kHz.