Cesium-helium mixed atom electrodeless lamp and cesium excitation state spectrum method using same

Abstract

The invention relates to a cesium-helium mixed atom electrodeless lamp comprising the following units: a gas chamber filled with cesium-helium mixed atoms; a radio frequency coupling coil evenly winded on the outer wall of the gas chamber and used for forming a radiofrequency field in the gas chamber; a radio frequency power amplifier module connected with the radio frequency coupling coil and used for providing a radio frequency power exciting the helium atom to form transition spectral line fluorescence from the first excitation state to the ground state; a shield box having light holes on two ends, wherein the gas chamber is arranged in the shield box, and the gas chamber end faces aim at the light holes of the shield box; the gas chamber is made of high light transmission material; the outer wall besides the end face of the gas chamber is provided with a coating used for highly reflecting the helium atom transition spectral line fluorescence formed between the first excitation state to the ground state; the invention also relates to a cesium excitation state spectrum method using the cesium-helium mixed atom electrodeless lamp; the cesium-helium mixed atom electrodeless lamp is simple in structure, low in cost, and high in efficiency.

Description

Technical field [0001] The invention relates to the field of spectroscopy technology and optical device technology, in particular to a cesium-mixed helium atom electrodeless lamp and a method for spectroscopy of the cesium excited state. Background technique [0002] Alkali metal cesium atoms have a wide range of applications in various fields such as precision laser spectroscopy, cold atom physics, atomic interferometers, atomic clocks, magnetometers, atomic gyroscopes, and atomic filters. The melting point of cesium metal is very low, only 28.4°C. It can be encapsulated in a very simple and cheap glass gas chamber to obtain sufficient vapor pressure and directly used in the above-mentioned fields. Another advantage of cesium atoms is that the transition wavelengths corresponding to the 852nm and 894nm from the ground state to the 6P state of the first excited state and the 456nm and 459nm from the ground state to the 7P state of the second excited state are available for direct...

AI Technical Summary

Problems solved by technology

In the prior art, the helium atom electrodeless lamp used as an independent light source to excite helium atoms has a large volume and a length of nearly 1 meter. The helium atom electrodeless lamp and the cesium glass gas chamber are independent of each other, and the structure is complicated and huge, and the efficiency is low.

In this method, because there is always a large space distance between the two, compared with cesium, the fluorescence of the helium atom electrodeless lamp is too divergent, and the efficiency is extremely low. This method mainly has two technical difficulties: the first technical difficulty is that the length The distance between the nearly 1-meter helium atom electrodeless lamp and the pumped independent cesium atom glass bubble is about several centimeters, which is a macroscopic quantity compared to the micron distance between atoms, and the difference is four orders of magnitude; the second point of technology The difficulty is that when the distance between the helium atom electrodeless lamp with a length of nearly 1 meter and the pumped independent cesium atom glass bubble is about several centimeters, when the 388.865nm fluorescence emitted by the helium atom acts on the millimeter-sized effective area in the center of the cesium bubble, the efficiency only a few thousandths

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