Title:
ALKALI-METAL VAPOR CELL ATOMIC CLOCK SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/130025
Kind Code:
A1
Abstract:
An alkali-metal vapor cell atomic clock system, comprising a first atomic vapor cell (140) and a second atomic vapor cell (150). A digital signal processor (170) outputs a first timing sequence to control a first laser signal, and the digital signal processor outputs a second timing sequence to control a second laser signal. Whereby, the first atomic vapor cell (140) and the second atomic vapor cell (150) can alternately lock a crystal oscillator (110). A Dick effect is reduced by alternately locking the crystal oscillator (110), so that the alkali-metal vapor cell atomic clock system can have more stable frequency output. Because the crystal oscillator (110) has low costs, the alkali-metal vapor cell atomic clock system has low costs and high stability.
Inventors:
ZHANG JIANWEI (CN)
SUN XIAOLIN (CN)
CHENG PENGFEI (CN)
ZUO YANI (CN)
WANG LIJUN (CN)
SUN XIAOLIN (CN)
CHENG PENGFEI (CN)
ZUO YANI (CN)
WANG LIJUN (CN)
Application Number:
PCT/CN2017/114483
Publication Date:
July 19, 2018
Filing Date:
December 04, 2017
Export Citation:
Assignee:
UNIV TSINGHUA (CN)
International Classes:
H03L7/26
Domestic Patent References:
| WO2014034955A1 | 2014-03-06 |
Foreign References:
| CN106877865A | 2017-06-20 | |||
| CN105991133A | 2016-10-05 | |||
| CN103454902A | 2013-12-18 | |||
| CN105811972A | 2016-07-27 |
Attorney, Agent or Firm:
ACIP LAW OFFICES (CN)
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