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Atomic clock with frequency stability changing according to tau<-1>

A frequency stability and atomic clock technology, applied in the field of atomic clocks, can solve the problems of high price and high maintenance cost, and achieve the effect of eliminating the Dick effect

Inactive Publication Date: 2018-05-04
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But its price is expensive, the maintenance cost is high, and its frequency stability is according to τ -1 / 2 Variety

Method used

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  • Atomic clock with frequency stability changing according to tau&lt;-1&gt;
  • Atomic clock with frequency stability changing according to tau&lt;-1&gt;
  • Atomic clock with frequency stability changing according to tau&lt;-1&gt;

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Embodiment Construction

[0022] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] see figure 1 , for the frequency stability according to τ -1 Variation (τ -1 ) block diagram of the atomic clock. The semiconductor laser 1 generates laser light of 795 nm, which is divided into two beams by the beam splitter 6. The first beam enters the control system 4 after being pumped by the first pulse light to the atomic clock 2 (POP1), and the second beam passes through the second pulse light. After pumping the atomic clock 3 (POP2), it enters the control system 4 . The first output of the control system 4 is to the first pulsed light-pumped atomic clock 2 , the second output is ...

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Abstract

The invention discloses an atomic clock with frequency stability changing according to tau<-1>. The atomic clock comprises a semiconductor laser, a first pulse light pumping atomic clock, a second pulse light pumping atomic clock, a control system, a local oscillator and a beam splitter, wherein a technology of alternative operation of the two pulse light pumping atomic clocks is adopted to realize continuous detection of a phase difference between the local oscillator and atoms, so that a Dick effect is eliminated, the frequency stability of the atomic clock changes according to tau<-1>, thefrequency stability of the atomic clock is improved, and the requirement for microwave phase noise is remarkably reduced.

Description

technical field [0001] The invention relates to a frequency stability according to τ -1 The changing atomic clock makes the two pulsed light pumped atomic clocks run alternately, realizes the continuous detection of the phase difference between the local oscillator and the atom, eliminates the Dick effect, and realizes frequency stability according to τ -1 Changes to improve the frequency stability of atomic clocks. Background technique [0002] Since the birth of the atomic clock, the performance has improved by about an order of magnitude every decade. Because of its small size, light weight, low power consumption, and high frequency stability, the bubble-type pulsed light pumped atomic clock is one of the candidates for high-efficiency space-borne clocks for the new generation of satellite navigation systems. However, the atomic clock pumped by pulsed light cannot detect the phase difference between the local oscillator and the atom during pulsed light pumping and detec...

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Application Information

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IPC IPC(8): H03L7/26
CPCH03L7/26
Inventor 林海笑邓见辽林锦达张松王育竹
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI