Off-axis air-intaking discharging glass tube for large power gas laser

Abstract

The invention provides an off-axis intake discharging glass pipe which is used for a fast axial flow gas laser. The off-axis intake discharging glass pipe comprises a vertical intake part and a level straight pipe part which are communicated; the connecting part of the vertical intake part and the level straight pipe part is a 'bulge shape', namely the longitudinal length of the connecting part is longer than the outer diameter of the intake part, the transverse diameter of the connecting part is larger than the outer diameter of the level straight pipe part, and the connecting part in the level direction is connected by a round arc part with the level straight pipe part. The axes of the level straight pipe part and the vertical intake part are not crossed in space but have a certain distance to form the feature of off-axis gas intake. The off-axis intake mode of the structure is obviously different from the axis symmetrical intake mode of the traditional cross discharging pipe and can form sufficient and effective turbulent flow, thus being characterized by uniform distribution of gas gaining medium flow field and sufficient symmetry, and further guaranteeing the stable glow discharge in large volume of the discharging pipe in the structure, also guaranteeing the availability of the ideal, symmetric, uniform, stable and reliable output laser beam quality.

Description

technical field [0001] The invention relates to a laser device, in particular to an off-axis intake discharge glass tube used for an axial fast-flow gas laser. Background technique [0002] The discharge glass tube is one of the core units of the axial fast-flow gas laser, and the gas inlet and the gas outlet are respectively provided with an anode and a cathode. Once a high voltage is applied between the cathode and anode electrodes, a gas discharge channel will be formed in the glass tube, and the discharge plasma will quickly pass through the discharge area under the action of an external fan, and part of the electric power injected into the discharge plasma will be converted into The other part of the laser power output is converted into heat energy to increase the temperature of the gas. The high-temperature gas generated by the discharge is cooled by a heat exchanger and then recycled to reduce operating costs and obtain higher photoelectric conversion efficiency. The...

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Problems solved by technology

The vertical air inlet part 1 is also the installation part of the anode needle; the outside of the gas outlet 2 is connected to the cathode ring; the installation part 3 of the pre-ionization electrode is coaxial with the air inlet part 1; the horizontal straight pipe part 4 is the glow discharge area, which is also Laser gain oscillation amplification area; the axis 5 of the straight pipe part 4 intersects the axis 6 of the air intake part 1 (that is, the axis of the pre-ionization installation part 3), which is an axisymmetric air intake method, and there are insufficient gas turbulence and gain Disadvantages of uneven distribution of medium flow field

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