A kind of atomic gas chamber with compound-eye stacked dense multi-bubble structure and its preparation method

Abstract

The invention provides an atomic gas chamber of a compound eye-type stacked dense multi-bubble structure. The atomic gas chamber comprises a glass shell and a filled medium, a plurality of micro-atomic air bubbles configured by glass walls are also arranged in the glass shell, and the micro-atomic air bubbles are filled with alkali metal atoms and a buffer gas. The atomic gas chamber of the compound eye-type stacked dense multi-bubble structure provided by the invention can stabilize the temperature coefficient and suppress the frequency shift, and solve the constrain of the bubble-type germanium atomic frequency standard and the rubidium atomic magnetometer on the long-term frequency stability index due to the changes of the temperature and pressure of the atomic chamber, thereby solvingthe problem of long-term frequency drift. The technical scheme of the invention provides atomic gas chambers with lower temperature coefficients, temperature fluctuation and less pressure shift for applications requiring higher demands such as atomic clocks, atomic magnetometers, atomic filters, and Faraday active light clocks, etc.

Description

【Technical field】 [0001] The present invention relates to an atomic gas chamber, in particular to an atomic gas chamber with a compound-eye type stacked dense multi-bubble structure, which can be widely used in bubble-type rubidium atomic clocks, atomic magnetometers, atomic filters, electrodeless lamps and Faraday active optical clock and other fields. 【Background technique】 [0002] The rubidium absorbing bubble used in the current bubble-type rubidium atomic frequency standard is a single-bubble atomic gas chamber, such as figure 1 As shown, its interior is filled with alkali metal rubidium atoms and buffer gas. There are two disadvantages in the rubidium absorption bubble of this structure. One is that the temperature is easily affected by the outside world, and the temperature coefficient is not easy to increase; The diffusion of the atomic gas will cause the air pressure in the atomic gas chamber to change, resulting in a pressure frequency shift. These two problems ...

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Problems solved by technology

[0005] Similarly, the core components of the electrodeless lamp are also figure 1 The single-bubble atomic gas cell shown, the pressure frequency shift of the atomic gas cell will also cause the spectral frequency instability and the fluctuation of the luminous intensity

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