Multi-pulse interference method and system in single beam of cold atom interferometer

The invention belongs to the technical field of atom interference and precision testing, and discloses a method and a system for multi-pulse interference in a single beam of a cold atom interferometer. The system mainly comprises a cold atom preparation unit, an interference unit and a detection unit. According to the method provided by the invention, multiple interference pulse effects with high consistency of transition efficiency can be accurately controlled in different time windows in a single Raman laser beam, and compared with a scheme of interference through a plurality of Raman beams in a traditional scheme, the method has the characteristics of simple structure and easiness in control. And the miniaturization design of the cold atom interference measuring instrument is facilitated. 本发明属原子干涉技术和精密测试技术领域，公开了一种冷原子干涉仪的单光束内多脉冲干涉方法与系统。本发明的系统主要包括冷原子制备单元、干涉单元、探测单元。根据本发明提供的方法，能够精确控制在单一拉曼激光束中的不同时间窗口中，进行多次具有跃迁效率高度一致性的干涉脉冲作用，相比于传统方案中通过多个拉曼光束干涉的方案，具备结构简单、易于操控的特性。有利于冷原子干涉测量仪器的小型化设计。