Rubidium-beam microwave clock pumped by distributed feedback diode lasers

被引：6

作者：

Liu, Chang ^{[1
]}

Zhou, Sheng ^{[2
]}

Wang, Yan-Hui ^{[2
]}

Hou, Shi-Min ^{[1
]}

机构：

[1] Peking Univ, Dept Elect, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China

[2] Peking Univ, Sch Elect Engn & Comp Sci, Beijing 100871, Peoples R China

来源：

CHINESE PHYSICS B | 2017年 / 26卷 / 11期

基金：

中国国家自然科学基金;

关键词：

quantum frequency standard; atomic clock; atomic beam; distributed feedback; FREQUENCY; STABILITY;

D O I：

10.1088/1674-1056/26/11/113201

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

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 x 10(-11) at 1 s, and 3 x 10(-12) at 1000 s. These experimental results demonstrate the feasibility of the scheme for a manufactured clock.

引用

页数：4

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