中国物理B ›› 2017, Vol. 26 ›› Issue (11): 113201-113201.doi: 10.1088/1674-1056/26/11/113201
• ATOMIC AND MOLECULAR PHYSICS • 上一篇 下一篇
Rubidium-beam microwave clock pumped by distributed feedback diode lasers
Chang Liu(刘畅), Sheng Zhou(周晟), Yan-Hui Wang(王延辉), Shi-Min Hou(侯士敏)
- 1. Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China;
2. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
Rubidium-beam microwave clock pumped by distributed feedback diode lasers
Chang Liu(刘畅)1, Sheng Zhou(周晟)2, Yan-Hui Wang(王延辉)2, Shi-Min Hou(侯士敏)1
- 1. Key Laboratory for the Physics and Chemistry of Nanodevices, Department of Electronics, Peking University, Beijing 100871, China;
2. School of Electronics Engineering and Computer Science, Peking University, Beijing 100871, China
摘要：
A rubidium-beam microwave clock, optically pumped by a distributed feedback diode laser, is experimentally investigated. The clock is composed of a physical package, optical systems, and electric servo loops. The physical package realizes the microwave interrogation of a rubidium-atomic beam. The optical systems, equipped with two 780-nm distributed feedback laser diodes, yield light for pumping and detecting. The servo loops control the frequency of a local oscillator with respect to the microwave spectrum. With the experimental systems, the microwave spectrum, which has an amplitude of 4 nA and a line width of 700 Hz, is obtained. Preliminary tests show that the clock short-term frequency stability is 7×10-11 at 1 s, and 3×10-12 at 1000 s. These experimental results demonstrate the feasibility of the scheme for a manufactured clock.
中图分类号: (Radio-frequency, microwave, and infrared spectra)
- 32.30.Bv