Abstract
We have proposed a new technique to obtain highly polarized atoms for improving the sensitivity of the all-optical Cs atomic magnetometer. In a Bell–Bloom magnetometer, the resonance pumping from the ground state $ {F_g} = 3 $ to the excited state $ {F_e} = 4 $ at the D1 line is used to polarize the Cs atoms and populate the sublevels of the $ |{F_g} = 4,{m_F} = 4\rangle $ partly as the transition $ {F_g} = 4 \to {F_e} = 3 $ remains leaking. Here we utilize a modulation technique to generate a sideband frequency to pump both transitions simultaneously, which drives more atoms to the target state $ |{F_g} = 4,{m_F} = 4\rangle $. This improvement significantly increases the magnetic resonance signal but with little effect on its linewidth. It is very suitable for the miniaturization of the atomic magnetometer in the future.
© 2019 Optical Society of America
Full Article | PDF ArticleMore Like This
Eugene A. Tsygankov, Sergei A. Zibrov, Alexander S. Zibrov, Vitali V. Vassiliev, Dmitry S. Chuchelov, Maria I. Vaskovskaya, Sergey V. Petropavlovsky, and Valery P. Yakovlev
Opt. Lett. 45(18) 5205-5208 (2020)
Armen Sargsyan, Ara Tonoyan, Aram Papoyan, and David Sarkisyan
Opt. Lett. 44(6) 1391-1394 (2019)
Zhuangzhuang Tian, Haobo Chang, Xin Lv, Mengna Yang, Zhihui Wang, Pengfei Yang, Pengfei Zhang, Gang Li, and Tiancai Zhang
Opt. Lett. 49(3) 542-545 (2024)