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Differential detection device and method for coherent layout imprisoned magneto-optic effect

A technology of coherent layout confinement and magneto-optic effect, which is applied to instruments using atomic clocks, etc., can solve the problems of affecting and affecting the frequency stability of passive coherent layout confinement atomic clocks, and achieve the effect of reducing slowly changing noise

Inactive Publication Date: 2014-07-30
WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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Problems solved by technology

These noises associated with the laser amplitude noise and frequency noise, as well as the slowly changing noise caused by the fluctuation of the atomic number density to the light absorption change affect the signal-to-noise ratio of the coherent layout trapped signal, thereby affecting the frequency stability of the passive coherent layout trapped atomic clock

Method used

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  • Differential detection device and method for coherent layout imprisoned magneto-optic effect
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  • Differential detection device and method for coherent layout imprisoned magneto-optic effect

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Embodiment Construction

[0022] Embodiments of the present invention will now be described with reference to the drawings, in which like reference numerals represent like elements.

[0023] Such as figure 1 As shown, the microwave signal and the DC signal pass through the bias coupler 1, the frequency range of the bias coupler should include the frequency of the input microwave, the coupled modulated signal drives the laser tube 2, and the laser beam emitted along the laser tube exits Alkali metal atom vapor bubbles 3 , polarization beam splitting crystal 4 , first photocell 5 , and second photocell 6 placed in the solenoid 7 are arranged in sequence. The angle between the polarization direction of the laser light emitted by the laser tube 2 and the transmission polarization direction of the polarization beam splitting crystal 4 is 45°, and the splitting into two beams with equal power is ensured by adjusting the polarization angle of the laser light emitted by the laser tube. The first photocell 5 i...

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Abstract

The invention discloses a differential detection device for a coherent layout imprisoned magneto-optic effect. The differential detection device comprises a bias coupler, a laser, a solenoid, alkali metal atomic vapor bubbles, a polarization beam splitting crystal, a photoelectric cell and a second photoelectric cell. The invention also discloses a differential detection method for the coherent layout imprisoned magneto-optic effect. According to the method, differential detection is performed on a laser signal obtained after linearly polarized light and atoms are mutually interacted in a magnetic field; through the scheme, common-mode noises which are associated with laser amplitude noises and frequency noises can be inhibited, so that the signal-to-noise ratio of the signal is improved; therefore, the stability of the output frequency of a coherent layout imprisoned atomic clock is improved. A passive coherent layout imprisoned atomic clock realized by adopting the scheme has the advantages of simple structure, low cost, small size and the like, and is suitable for realizing small and micro atomic clocks. The invention also discloses the differential detection method for the coherent layout imprisoned magneto-optic effect.

Description

technical field [0001] The invention relates to the field of passive coherent layout trapped atomic clocks, in particular to a differential detection device for a coherent layout trapped magneto-optical effect, and a differential detection method for a coherent layout trapped magneto-optical effect. Background technique [0002] Passive coherent layout captive atomic clock is an electronic device that outputs high-stability frequency signals. It has many characteristics such as small size, low power consumption, light weight, fast start-up, and miniaturization. Technical fields such as engineering measurement, communication, missile guidance and electronic instruments and equipment. [0003] The working principle of the passive coherent layout trapped atomic clock is: two different frequency laser (dual-color laser) fields interact with a three-level atomic system composed of an excited state energy level and two ground state hyperfine energy levels. When the two-frequency l...

Claims

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Application Information

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IPC IPC(8): G04F5/14
Inventor 谭伯仲田原杨晶顾思洪
Owner WUHAN INST OF PHYSICS & MATHEMATICS CHINESE ACADEMY OF SCI
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