Axial fast flow gas laser device

Abstract

The invention discloses an axial fast flow gas laser device, which comprises a resonant cavity, a gas circulation cooler, a surface plate, discharge electrodes, a radio frequency power supply and a gas pump, wherein the resonant cavity comprises a front reflecting mirror, a catadioptric mirror, a rear reflecting mirror, discharge tubes and a light path bracket; the light path bracket is connected with a plurality of discharge tubes to be arrayed into a rectangle light path; the catadioptric mirror is arranged at the corner of the light path; the front and rear reflecting mirrors are arranged at both ends of the light path; the discharge electrodes are arranged on the discharge tubes; the discharge electrodes are connected to the radio frequency power supply; the gas of the discharge tubes is excited by the radio frequency under the excitation of the radio frequency power supply to form a plasma to generate the glow discharge phenomenon to be incident upon one photon of the plasma of the gas generating the laser; the plasma can generate two photons to emit. The photons oscillate back and forth on the light path between the front and rear reflecting mirrors to generate the laser; the light path bracket is arranged on the surface plate; the gas circulation cooler is arranged at the back of the surface plate; and after generating the laser, the gas is cooled and recycled in the gas circulation cooler under the action of the gas pump.

Description

technical field [0001] The invention relates to an axial fast flow gas laser device, in particular to the structure between the resonant cavity of the laser, the gas circulation cooler and the radio frequency power supply and the like. Background technique [0002] Most gas (carbon dioxide) lasers use DC discharge: DC discharge gas lasers work in the self-sustaining discharge region, the ionization occurs in the cathode drop layer, and the vibration excitation is limited in the positive column area, and a large part of the energy is absorbed by the cathode drop layer. loss; in the cathode drop area, due to the existence of high-energy electrons and the reduced refractive index, the small signal gain is low, so the near-field distribution is uneven and the far-field divergence angle is large; the gas temperature in the cathode drop area is high and easy to form heat Unstable, poor discharge stability. [0003] From the above, it can be seen that the characteristic of DC disc...

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Problems solved by technology

[0009] In addition, most of the current axial fast flow gas lasers are large-volume complex systems. The structure of the laser resonator mostly uses three or four beams to fix two end plates, and the laser tube is hoisted on the beams. One, two, or three folds are performed between the two end plates to extend the optical path. This kind of resonator needs an external system such as a gas circulation cooler to cool the gas, increase the gas pipeline, and increase the volume and space utilization. Disadvantages such as lower rate

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