CN-121977521-A - Laser gyro for inhibiting abnormal discharge of anode

CN121977521ACN 121977521 ACN121977521 ACN 121977521ACN-121977521-A

Abstract

According to the laser gyro for inhibiting the abnormal discharge of the anode, the extension rod is arranged on the anode, and extends into the first channel communicated with the capillary tube and towards the capillary tube, so that the anode can receive more electrons in the capillary tube, the anode is more close to the electrons in the capillary tube, the receiving capacity of the anode for the electrons in the initial stage of starting is improved, and the abnormal discharge condition between the two anodes caused by weak electron receiving capacity of the anode is reduced. Through setting up auxiliary isolation electrode, auxiliary isolation electrode includes the blind hole of opening towards the frame outside, and the blind hole is close to the capillary, and the coating conductive coating material is in the blind hole, and conductive coating material is connected with the negative pole electricity. Thus, a reverse electric field is formed between the anode and the auxiliary isolating electrode, and overshoot electrons which skip the anode are prevented from continuing to move, so that the electrons cannot reach the anode at the other side. The problem of abnormal discharge between two anodes of the laser gyro is effectively solved.

Inventors

DONG HONGCHENG
SHI YAHUI
FU HONGXIA
PAN ZHIXIN
LI YUQIN
WANG TIANKANG

Assignees

天津集智航宇科技股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260401

Claims (10)

1. The laser gyro is characterized by comprising a frame, wherein a cavity is arranged in the frame, working gas is filled in the cavity, the cavity comprises a capillary, the capillary is of an annular structure, two anodes and a cathode are arranged on the frame, the two anodes are symmetrically arranged relative to the cathode, the anodes comprise a main body part and an extension rod, the extension rod is positioned on one side of the main body part, first channels are respectively arranged at the two anodes arranged on the frame, one end of each first channel is communicated with the corresponding anode, the other end of each first channel is communicated with the capillary, and the extension rod extends into the first channels and extends towards the capillary; the frame uses the line of two positive pole as the boundary line and divide into first region and second region, first region is provided with the negative pole, the second region is provided with auxiliary isolation electrode, auxiliary isolation electrode includes the opening orientation the blind hole in the frame outside, the blind hole is close to the capillary, the coating is conductive coating material in the blind hole, conductive coating material with the negative pole electricity is connected.
2. The laser gyro of claim 1, wherein the conductive coating material is formed by mixing copper powder or aluminum powder or silver powder with an organic binder.
3. The laser gyro of claim 1, wherein the conductive coating material is electrically connected to the cathode through a surface-insulated polyimide wire.
4. The laser gyro of claim 1, wherein the diameter of the blind hole is 1mm-10mm, and the distance from the bottom of the blind hole to the inner wall of the capillary tube is 1mm-3mm.
5. The laser gyro for suppressing abnormal discharge of anode according to claim 1, wherein the diameter of the extension rod is 1mm-6mm and the length thereof is 3mm-15mm.
6. The laser gyro of claim 1, wherein the free end of the extension rod has a planar structure or an arc structure.
7. The laser gyro of claim 1, wherein the frame has a rectangular structure having a certain thickness, two anodes and cathodes are disposed on the side of the frame, one or two auxiliary isolating electrodes are disposed on the front or side of the frame.
8. The laser gyro of claim 7, wherein one auxiliary isolating electrode is provided, the auxiliary isolating electrode is located at a center position of two anodes, the auxiliary isolating electrode is equally spaced from the two anodes, and the auxiliary isolating electrode is provided on a front surface or a side surface of the frame.
9. The laser gyro of claim 7, wherein the auxiliary isolating electrodes are provided in two, the two auxiliary isolating electrodes are provided near the two anodes, respectively, and the two auxiliary isolating electrodes are provided on the front or side of the frame.
10. The laser gyro of claim 7, wherein the auxiliary isolating electrodes are provided in two, the two auxiliary isolating electrodes are provided between the two anodes at a uniform distance, and the two auxiliary isolating electrodes are provided on the front or side of the frame at positions close to the capillaries.

Description

Laser gyro for inhibiting abnormal discharge of anode Technical Field The invention relates to the technical field of laser gyroscopes, in particular to a laser gyroscope for inhibiting abnormal discharge of an anode. Background The laser gyro is an inertial instrument with high precision, high reliability and long service life. The principle of the laser gyro is that the Sagnac effect is adopted, the clockwise and anticlockwise laser frequencies are different, and the rotation angular speed can be obtained by measuring the frequency difference of two paths of lasers. The principle formula is as follows: where S is the area of the loop, In order to achieve the light velocity, the light beam is,For the optical length of the loop,For the rotational speed of the carrier,The principle of the frequency difference between the counterclockwise and the clockwise light is shown in fig. 1. In a closed optical path of a square resonant cavity, the optical path is rotated at a speedClockwise rotation and counterclockwise light frequency increaseThe clockwise light frequency is reduced to。 The laser gyro generates laser and has to load high voltage to the electrode of the laser gyro through a high voltage control circuit, and the laser gyro electrode usually adopts a cathode and two anodes which are symmetrically arranged to offset errors generated by Langmuir flow effect. The laser gyro is filled with high-purity working gas, and the gas is broken down by high voltage of several kilovolts generated by electrodes at two ends to form stable plasma. The plasma has gain amplification effect and can be excited to form stable laser output. The correct discharge channel of the laser gyro is a common cathode and a channel between two anodes for stable discharge, and the normal discharge is shown in fig. 1. The high pressure difference between the cathode and the anode of the laser gyro at the initial stage of starting is generally 2000V-6000V, however, a discharge channel is sometimes formed between the two anodes at the moment of high pressure loading. Such abnormal discharge causes a significant decrease in laser gyro performance. The channel abnormal discharge condition between anodes is particularly easy to occur in some small laser gyroscopes because the distance between two anodes of the small laser gyroscopes is short, and sometimes in order to increase the laser output power, the discharge area length has to be further shortened, which further aggravates the channel abnormal discharge possibility between anodes. The abnormal discharge between the anodes is shown in fig. 2. Disclosure of Invention The invention aims to provide a laser gyro for inhibiting abnormal discharge of anodes, which effectively solves the problem of abnormal discharge between two anodes of the laser gyro. In order to solve the problems, the invention discloses a laser gyro for inhibiting abnormal discharge of an anode, which comprises a frame, wherein a cavity is arranged in the frame, working gas is filled in the cavity, the cavity comprises a capillary tube, the capillary tube is of an annular structure, two anodes and a cathode are arranged on the frame, the two anodes are symmetrically arranged relative to the cathode, the anodes comprise a main body part and an extension rod, the extension rod is positioned at one side of the main body part, first channels are respectively arranged at the two anodes arranged on the frame, one end of each first channel is communicated with the corresponding anode, the other end of each first channel is communicated with the capillary tube, and the extension rod extends into the first channel and extends towards the capillary tube; the frame uses the line of two positive pole as the boundary line and divide into first region and second region, first region is provided with the negative pole, the second region is provided with auxiliary isolation electrode, auxiliary isolation electrode includes the opening orientation the blind hole in the frame outside, the blind hole is close to the capillary, the coating is conductive coating material in the blind hole, conductive coating material with the negative pole electricity is connected. Optionally, the conductive coating material is formed by mixing copper powder or aluminum powder or silver powder with an organic adhesive. Optionally, the conductive coating material is electrically connected to the cathode through a surface-insulated polyimide wire. Optionally, the diameter of the blind hole is 1mm-10mm, and the distance between the bottom of the blind hole and the inner wall of the capillary tube is 1mm-3mm. Optionally, the diameter of the extension rod is 1mm-6mm, and the length is 3mm-15mm. Optionally, the free end of the extension rod is in a planar structure or an arc structure. Optionally, the frame is a rectangular structure with a certain thickness, two anodes and cathodes are arranged on the side face of the frame, one or two auxiliary isolating electrode