A Preliminary Study of Pump/Probe Angular Dependence of Zeeman Electromagnetically Induced Transparency

Kaleb Campbell, Somaya Madkhaly, Dillon de Medeiros +1 more

Richard Jackson, Kaleb Campbell, Michael Crescimanno +1 more

Zong-Syun He, Jyh-Hung Tsai, Yung-Yung Chang +2 more

This paper thoroughly elucidates the relative intensities of the probe transmission in a ladder-type electromagnetically induced transparency (EIT) system by considering the optical pumping effect. The observed EIT spectra reveal a different probe or coupling power dependence for various transmission peaks. In addition to causing quantum interference, the probe and coupling laser fields realign the population of Zeeman sublevels in the ground state through optical pumping. Analytical results indicate that the re-distribution levels, failing to contribute to the EIT peaks, either out of transition path or zero transition probability, significantly affect the transmission intensity.

Somya Hadi Madkhaly

Tiancai Zhang

Employing two lasers as the coupling and probe fields which have opposite circular polarization (σ + and σ -), electromagnetically induced transparency (EIT) in Λ-type Zeeman sublevels of cesium 6 2S 1/2F=3-6 2P 3/2F′=2 degenerate two-level system has been demonstrated via probe absorption spectra. The effect of the intensity and detuning of different coupling. Laser on EII was also investigated in experiments. Within the Doppler background, optical pumping among Zeeman sub-levels and the population of different Zeeman sub-levels can dominate the intensity of EIT effect. And the physical reason of the rugged spectra are presented qualitatively.

David J. Fulton, Richard R. Moseley, Sara Shepherd +2 more