a ring laser

Abstract

The invention discloses a ring laser, which comprises a laser resonant cavity formed by a resonant cavity, a plane reflector, an E-mirror, an air storage hole and a capillary pipeline. The resonant cavity is also provided with a cathode, a large anode and a small anode. The cavity is also provided with a process cathode, and the process cathode and the cathode are symmetrically arranged on both sides of the resonant cavity; the present invention forms a double-yin and double-yang electrode layout form by symmetrically setting a process cathode on the opposite side of the existing ring laser cathode , so that during the gas discharge cleaning process, two cathodes and a large anode can be used to form a discharge cleaning channel, and then two cathodes and a small anode can be used to form another discharge cleaning channel, which can significantly improve the plasma in the capillary circuit of the resonant cavity. Compared with the single cathode, the time-sharing use of two cathodes can effectively prolong the service life of the laser gyroscope.

Description

technical field [0001] The patent of the present invention relates to the technical field of gas laser gyroscopes, in particular to a ring laser in a two-frequency mechanically dithering laser gyroscope. Background technique [0002] The structure of the ring laser in the two-frequency machine-dithered laser gyroscope is as follows: figure 1 As shown, it mainly includes a resonant cavity 1, a plane mirror 2, an E-mirror 3, a cathode 4, a large anode 5, a small anode 6, a gas storage hole 7, and a capillary pipeline 8. Among them, the resonant cavity 1, two plane mirrors 2, two E-mirrors 3 and capillary tube 8 form a low-loss laser resonant cavity of He-Ne gas, which maintains stable forward and reverse waves in the cavity. The cathode 4, the large anode 5 and the small anode 6 perform vacuum gas discharge under the excitation of a high-voltage DC power supply to form a discharge channel. The gas storage holes 7 store He-Ne working gas. [0003] The cathode and anode are t...

AI Technical Summary

Problems solved by technology

[0004] At present, the ring lasers in the two-frequency machine-dithered laser gyro adopt the electrode layout form of double anode and common cathode. Since there is only one cathode, in order to prolong the service life of the cathode, a relatively small The discharge current (such as 1mA ~ 2mA), and only the discharge arm composed of the cathode and the two anodes forms plasma, which can only clean the arm, while the other arm is not cleaned, so the plasma The intensity and range of discharge cleaning are limited

In addition, once the cathode reaches its limit life during use, the entire laser gyro will be scrapped, while other components are far from reaching their service life, thus limiting the life cycle of the laser gyro

Images