Precision measurement of cesium 6S–7S two-photon spectra with single trapped atoms. (26th March 2019)

• Record Type: Journal Article
• Authors: Tian, Yali; Yang, Pengfei; Wu, Wei; Li, Shaokang; Li, Gang; Zhang, Pengfei; Zhang, Tiancai
• Is Part Of: Japanese journal of applied physics. Volume 58:Number 4(2019)
• Publication Date: 2019-03-26
• Subjects: Physics -- Periodicals; 621.05
• DOI: 10.7567/1347-4065/ab08cd
• Languages: English
• ISSNs: 0021-4922

Abstract

Abstract: A new method to precisely measure the hyperfine spectra of a weak atomic transition line with very low probe power is presented by combining the optical pumping and state detection techniques. By adopting such a method, we demonstrate an experiment to measure the cesium 6S–7S two-photon spectra with optically trapped single atoms. The power of the probe beam in our experiment is on the micro-watt level and the corresponding intensity is on the level of hundreds of watts per square centimeter. Both are much weaker than that of traditional fluorescence detection measurements. The corresponding hyperfine coupling constant A hps of the 7S state is also determined, and is in good agreement with former measurements.