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Method for reducing optical frequency shift of rubidium atomic frequency standard

A rubidium atomic frequency standard, optical frequency shift technology, applied in the direction of automatic power control, electrical components, etc., can solve the problems affecting the output frequency stability of the rubidium atomic frequency standard, can not eliminate the optical frequency shift, etc., to reduce the optical frequency The effect of shifting and shortening time

Inactive Publication Date: 2011-06-22
JIANGHAN UNIVERSITY
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Problems solved by technology

When the linear function of the spectral line changes slightly, it is easy to cause the sum of the positive optical frequency shift and the negative optical frequency shift to be non-zero, and cause the optical frequency shift of the rubidium atomic frequency standard. Therefore, only changing the pumping light intensity cannot eliminate the spectral The optical frequency shift caused by the change of the linear function of the line will affect the stability of the output frequency of the rubidium atomic frequency standard

Method used

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  • Method for reducing optical frequency shift of rubidium atomic frequency standard
  • Method for reducing optical frequency shift of rubidium atomic frequency standard
  • Method for reducing optical frequency shift of rubidium atomic frequency standard

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Embodiment Construction

[0020] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

[0021] Such as figure 1 As shown, the rubidium atomic frequency standard using the method for reducing the optical frequency shift of the rubidium atomic frequency standard in this embodiment includes: a microprocessor 10, a digital frequency synthesizer 11, a voltage-controlled crystal oscillator 12, an isolation amplifier 13, and a radio frequency multiplier Unit 14, microwave multiplier, frequency mixing unit 15, physical system 16, synchronous phase detector 17, and magnetic ultrafine component filter 18. The physical system 16 includes a spectral lamp 161 for generating pumping light, an integrated filter resonance bubble 162 for storing rubidium atoms, a microwave cavity 163 for storing microwave fields, and a C-field coil 164 for generating a static magnetic field parallel to the axis of the microwave cavity , a p...

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Abstract

The invention discloses a method for reducing the optical frequency shift of a rubidium atomic frequency standard. The method comprises the following steps of: placing a filter between a spectrum lamp and an integrated filter resonance bubble; sending a coherent microwave probing signal to act on the integrated filter resonance bubble; and sending a voltage excitation signal to act on the spectrum lamp for controlling the working state of the spectrum lamp. The method can reduce the optical frequency shift of the rubidium atomic frequency standard so as to improve the accuracy of an output frequency of the rubidium atomic frequency standard.

Description

technical field [0001] The invention relates to the field of passive rubidium atomic frequency standards, in particular to a method for reducing the optical frequency shift of the rubidium atomic frequency standard. Background technique [0002] An atomic frequency standard is a device that provides standard frequency and time. The rubidium atomic frequency standard has become the most widely used atomic frequency standard because of its small size, low power consumption and good ability to withstand harsh environments. It also has good indicators and can meet the needs of most military and civil projects. It can be used in engineering fields such as early warning aircraft, fighter aircraft, electronic countermeasures, third-generation mobile communication technology networks, and power monitoring. [0003] The rubidium atomic frequency standard mainly includes voltage-controlled crystal oscillators, physical systems and electronic circuits. The physical system specificall...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03L7/26
Inventor 雷海东管桦
Owner JIANGHAN UNIVERSITY
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