Setup of a dipole trap for all-optical trapping

• 作者: Miao Wang Zheng Chen Yao Huang Hua Guan Ke-Lin Gao
• 来源期刊: 中国物理B（英文版）
• 年，卷（期）: 2021,（5）
• 所属期刊栏目: ATOMIC AND MOLECULAR PHYSICS
• 页码范围: 407-412
• 页数: 6页
• 语种: 英文
• DOI: 10.1088/1674-1056/abd767

摘要

Micromotion induced by the radio-frequency field contributes greatly to the systematic frequency shifts of optical frequency standards.Although different strategies for mitigating this effect have been proposed,trapping ions optically has the potential to provide a generic solution to the elimination of micromotion.This could be achieved by trapping a single ion in the dipole trap composed of a highpower laser field.Here,we present the setup of the dipole trap composed of a 532 nm laser at a power of 10 W aiming to optically trap a single 40Ca+ and we observe an AC-Stark shift of the fluorescence spectrum line of ～ 22 MHz caused by the 532 nm dipole beam.The beam waist of the dipole laser is several microns,which would provide a dipole potential strong enough for all-optical trapping of a single 40Ca+ ion.