光学学报, 2020, 40 (18): 1802001, 网络出版: 2020-08-28
基于型材网格平台的紧凑 85Rb喷泉钟光路设计 下载: 756次
Design of Compact 85Rb Fountain Optical Path Based on Profile Gridded Platform
原子与分子物理学 原子喷泉钟 85Rb 型材网格 光学平台 atomic and molecular physics atomic fountain clock 85Rb profile grid optical platform
摘要
原子喷泉钟是具有重要应用价值的冷原子装置,紧凑型光学系统设计是研制可搬运冷原子喷泉钟的关键技术之一。介绍了一种以通用铝型材搭建的网格化光学平台,并基于此平台实现了 85Rb喷泉钟紧凑型光路。通过仿真,证明了该型材网格平台在二维方向均具有较好的力学性能。在该平台上,设计并搭建了四倍频移、注入锁定放大、冷却光路、再泵浦光路和探测光路等单元模块,满足了喷泉钟的所有要求。该网格平台面积为50 cm×50 cm,高度为2.5~3 cm。该光路实现了8个月以上的持续运行,功率的起伏小于5%。基于该紧凑型光学系统,完成了后续的 85Rb喷泉钟的物理实验和微波实验。
Abstract
The atomic fountain clock is one cold atom applied apparatus possessing important applications. Compact laser system design is one of the key techniques for a portable cold atomic fountain clock. This paper introduces a gridded optical platform built with the general aluminum profiles, and based on it, we construct a compact optical path for the 85Rb fountain clock. Through simulation, it is proved that the profile gridded platform has better mechanical properties in two-dimensional direction. On this platform, we design and build the modules of such as four-pass frequency shift, injection locked amplifier, cooling optical path, repumping and probing paths to satisfy all requirements of an atomic fountain clock. The platform covers an area of 50 cm×50 cm and has a height of 2.5-3 cm. The optical path has been running continuously for more than 8 months with a power fluctuation less than 5%. Based on the compact optical system, we have completed the subsequent physical and microwave experiments of 85Rb fountain clocks.
姬清晨, 董日昌, 王倩, 张宁, 赵伟靖, 王燕, 魏荣. 基于型材网格平台的紧凑 85Rb喷泉钟光路设计[J]. 光学学报, 2020, 40(18): 1802001. Qingchen Ji, Richang Dong, Qian Wang, Ning Zhang, Weijing Zhao, Yan Wang, Rong Wei. Design of Compact 85Rb Fountain Optical Path Based on Profile Gridded Platform[J]. Acta Optica Sinica, 2020, 40(18): 1802001.