Annular laser device with electrode group and manufacture method for electrode group

Abstract

The invention relates to an annular laser device with an electrode group and a manufacture method for the electrode group. The annular laser device comprises a resonance cavity, wherein the resonance cavity is provided with the electrode group, an optical mirror and a plurality of clear aperture channels; helium-neon mixed gas is filled inside the resonance cavity; and the electrode group is formed by connection of an electrode conductor and a glass segment through a connecting layer in a thermocompression manner. The manufacture method for the electrode group comprises the following steps of depositing a seed layer and a transition layer, manufacturing an activated reaction layer, exciting the activated reaction layer, and welding the electrode conductor and the glass segment in a thermocompression way. The annular laser device and the manufacture method have the main advantages that 1, the electrode group is connected with the resonance cavity through the glass segment of the electrode group in a sealing manner, so that instant airtight sealing connection of local heating is realized, and the affect of thermal residual stress generated in integral heating and sealing is effectively eliminated; 2, the glass segment is clung to the resonance cavity through optical cement, and the disassembly and the replacement of the electrode group are convenient; and 3, the glass segment and the resonance cavity adopt the same material, and the sealing connection stress generated in direct sealing connection of the electrode group and the resonance cavity is avoided.

Description

technical field [0001] The invention relates to a ring laser with an electrode group and a method for manufacturing the electrode group, and belongs to the technical field of ring laser manufacturing. Background technique [0002] Ring lasers are widely used as standard light sources for high-precision optical metrology instruments, such as laser gyroscopes. Laser gyroscope is the only high-precision photoelectric inertial sensing element that has really achieved fruitful practical applications in the field of inertial technology. It is widely used in inertial navigation systems on aircraft, rockets and tanks. In addition, laser gyros can also provide precise positioning for the depth and location of oil drilling. [0003] Ring lasers usually use a whole piece of quartz glass or glass ceramics as the resonant cavity of the ring laser. Three or more light passages are drilled on the resonant cavity to form the required polygonal ring light path. The optical mirror and the ...

AI Technical Summary

Problems solved by technology

The ring laser electrode anode bonding and sealing method overcomes the disadvantage that the electrode indium seal cannot withstand high temperature loads

However, this method has the following disadvantages: the electrode material of the ring laser is metal, and the thermal expansion coefficient of the electrode and the resonant cavity is very different. Residual stress and deformation, which may even lead to the rupture of the resonant cavity in severe cases

The method of anodic bonding is more complicated and requires special anodic bonding equipment

In addition, whether it is the indium solder sealing method or the anodic bonding method, it is necessary to heat the resonant cavity and the electrodes as a whole. The heating time is generally 4 to 6 hours, and the sealing method has a long period and low efficiency.

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