Method of alkali metal gas electrodeless lamp pump to output alkali metal gas laser and laser device

Abstract

The invention discloses a method of an alkali metal gas electrodeless lamp pump to output an alkali metal gas laser and a laser device. The method comprises the following steps of: generating an alkali metal gas atom which is transmitted by a transition spectral line between a first excited state and a ground state in a pump light pump steam chamber through an alkali metal gas electrodeless lamp, so that the alkali metal gas atom in the steam chamber is transited to the first excited state, wherein the type of the alkali metal gas charged into the alkali metal gas electrodeless lamp is as the same as that of the alkali metal gas in the steam chamber; migrating the alkali metal gas atom in the steam chamber from the first excited state to a second excited state which is near to the first excited state to form into the inversion of distribution number between the second excited state and the ground state through the collision function between the other gas atom and / or gas molecules mixed in the steam chamber and the alkali metal gas atom in the steam chamber; and outputting an alkali metal gas laser with a frequency which corresponds to the transition spectral line between the second excited state and the ground state.

Description

technical field [0001] The invention relates to alkali metal gas laser technology, in particular to a method and a laser device for pumping and outputting alkali metal gas laser by an alkali metal gas electrodeless lamp, and belongs to the field of laser technology. Background technique [0002] Using alkali metal gas atoms to output alkali metal gas laser light can be used as a highly coherent gas laser light source. figure 1 A schematic diagram of the existing atomic energy levels of alkali metal gases, such as figure 1 As shown, in the alkali metal atomic state representation, the principal quantum number n=2 (lithium), 3 (sodium), 4 (potassium), 5 (rubidium) or 6 (cesium); wherein there is a D 1 (excited state np 2 P 1 / 2 to ground state ns 2 S 1 / 2 transition between) spectral line, a D 2 (excited state np 2 P 3 / 2 to ground state ns 2 S 1 / 2 transition between) spectral lines. [0003] In the prior art, there are mainly the following two ways of outputting alkal...

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Problems solved by technology

[0005] The other is to use dye laser pumping, titanium sapphire laser pumping or semiconductor laser pumping technology to achieve alkali metal gas atoms in D 1 The laser output on the spectral line, however, the frequency of its pump light source has the defect of long-term instability

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