Optically pumped cesium atomic clock using axisymmetric multistage magnets and its realization method

Abstract

The invention discloses an optical-pumping cesium atomic clock employing an axial-symmetric multi-level magnet and an implementation method of the optical-pumping cesium atomic clock, and belongs to the technical field of microwave atomic clocks and microwave quantum frequency standards. An axial-symmetric multi-level magnet beam optical system is creatively applied to an optical-pumping small-size cesium atomic block, cesium atomic beams subjected to optical pumping can be gathered before entering a microwave resonant cavity, so that divergence of cesium atoms released from a cesium furnace in space and the loss of the cesium atoms by magnetic state selection are reduced, the cesium atom utilization efficiency is improved, and the signal-to-noise ratio of a clock jump signal and the stability index of the cesium clock are further improved. By the optical-pumping cesium atomic clock, the utilization efficiency of the cesium atoms in the cesium clock can be improved, and the signal-to-noise ratio of the clock jump signal and the stability index of the cesium clock are improved.

Description

technical field [0001] The invention belongs to the technical field of microwave atomic clocks and microwave quantum frequency standards, and relates to a beam optical system using narrow-linewidth laser light pumping and axisymmetric multi-stage magnets (including four-stage and six-stage magnets) to control cesium atoms diverging from a cesium furnace A small cesium atomic clock that performs two-dimensional space focusing and gathering before the beam enters the microwave resonator. Background technique [0002] As a primary frequency standard, cesium atomic microwave clocks have been widely used in national defense and civilian applications, and play a pivotal role in the field of quantum frequency standard technology. At present, the method adopted by the commercial magnetic separation state cesium atom microwave clock is to make the cesium atoms effluent from the cesium furnace use a secondary magnet to select the state of the cesium atoms. Due to the divergence of at...

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Problems solved by technology

At present, the method adopted by the commercial magnetic separation state cesium atom microwave clock is to make the cesium atoms effluent from the cesium furnace use a secondary magnet to select the state of the cesium atoms. Divergence in atomic space, so the utilization rate of cesium atoms is very low, which limits the improvement of signal-to-noise ratio and stability of cesium clocks

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