Acta Optica Sinica, Volume. 40, Issue 18, 1802001(2020)
Design of Compact 85Rb Fountain Optical Path Based on Profile Gridded Platform
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.
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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
Category: Atomic and Molecular Physics
Received: Apr. 30, 2020
Accepted: Jun. 9, 2020
Published Online: Aug. 28, 2020
The Author Email: Wang Yan (yanwang@staff.shu.edu.cn), Wei Rong (weirong@siom.ac.cn)