Precise Measurement of Hyperfine Structure of Cesium 7S1/2 Excited State

Applied Sciences

卷:10

Yuechun Jiao¹  Liping Hao¹  Jianming Zhao¹  Jiabei Fan¹  Yunhui He¹ 

[1] State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Laser Spectroscopy, Shanxi University, Taiyuan 030006, China;

关键词: hyperfine structure;    electromagnetically induced spectroscopy;    cesium 7s_1/2 excited state;   

DOI  :  10.3390/app10020525

来源: DOAJ

【 摘 要 】

We present a precise measurement of the hyperfine structure of cesium $7S_{1/2}$ excited state by employing electromagnetically induced spectroscopy (EIS) with a cesium three-level cascade ( $6S_{1/2}-6P_{3/2}-7S_{1/2}$ ) atom in a room temperature vapor cell. A probe laser, ${\lambda }_p$ = 852 nm, was coupled to a transition $|6S_{1/2}\rangle \to |6P_{3/2}\rangle$ , related frequency locked to the resonance hyperfine transition of $|6S_{1/2}\rangle \to |6P_{3/2}\rangle$ with a Fabry−Perot (FP) cavity and an electro-optic modulator (EOM). A coupling laser, ${\lambda }_c$ = 1470 nm, drove the $|6P_{3/2}\rangle \to |7S_{1/2}\rangle$ transition with the frequency scanned over the $|6P_{3/2}\rangle \to |7S_{1/2}\rangle$ transition line. The hyperfine level interval was extracted to be 2183.61 ± 0.50 MHz by analyzing EIS spectroscopy. The optical−optical double-resonance (OODR) spectroscopy is also presented for comparison, with the corresponding value of the hyperfine level interval being 2183.48 MHz ± 0.04 MHz, and the measured hyperfine splitting of excited 7 $S_{1/2}$ state is shown to be in excellent agreement with the previous work.

【 授权许可】

Unknown