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a pulse co 2 laser discharge cavity

A laser and discharge cavity technology, applied in lasers, laser parts, laser parts and other directions, can solve the problems of large power drop rate and amplitude, high working gas degradation rate, large transmission loss of ultraviolet light, etc. Amplitude reduction, increased pre-ionization effect, improved performance effect

Active Publication Date: 2020-01-10
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

Pre-ionization usually adopts spark needle array discharge ultraviolet light pre-ionization method, which is arranged on both sides of the discharge electrode. Due to the requirement of insulation distance, the spark needle is far away from the discharge area, which makes the transmission loss of the generated ultraviolet light very large, thus making the pre-ionization effect not tall
Moreover, because the spark needle is arc discharge, the deterioration rate of the working gas is very high, and the power decline rate and range are very large during continuous operation.
At present, due to the limitation of pre-ionization technology, the further development of this type of laser has been in a bottleneck state

Method used

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  • a pulse co <sub>2</sub> laser discharge cavity

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Embodiment Construction

[0016] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention.

[0017] refer to figure 1 As shown, it is a novel pulse CO of the specific embodiment of the present invention 2 The laser discharge cavity includes a special electrode 1 for main discharge, a set of common electrodes 2 and a set of special electrodes 3 for pre-ionization discharge. The pre-ionization is uniform, so that the discharge is more uniform. In this embodiment, there is one discharge-specific electrode 1, 5 common electrodes 2, and 6 pre-ionization discharge-specific electrodes 3, but in other embodiments, the number of common electrodes 2 and pre-ionization discharge-specif...

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Abstract

The invention relates to the technical field of gas lasers, and specifically discloses a pulsed CO 2 Laser discharge cavity, pulsed CO 2 The laser discharge chamber includes electrodes dedicated to main discharge, common electrodes and electrodes dedicated to pre-ionization discharge; the common electrode is opposite to and arranged alternately with the dedicated electrodes for pre-ionization discharge, and the dedicated electrodes for pre-ionization discharge are located on the outermost side; , set opposite to the main discharge dedicated electrode. The pulsed CO of the present invention 2 The laser discharge cavity adopts a brand-new structural form. By using the glow discharge to generate plasma ionization, the rate of deterioration of the working gas can be effectively reduced, so that the rate and amplitude of the power drop during the continuous operation of the laser are also significantly reduced. Overall improved pulse CO 2 The performance of the laser is conducive to the further development of this type of laser.

Description

technical field [0001] The invention relates to the technical field of gas lasers, in particular to a pulsed CO 2 Laser discharge cavity. Background technique [0002] Pulsed CO 2 The laser uses repetitive frequency pulse discharge excitation to generate laser gain. Its discharge electrodes are two long strip electrodes set opposite to each other. The discharge gap is usually tens of millimeters. In order to achieve stable repetition frequency pulse discharge for the main discharge, pre-ionization technology must be used. Lower the main discharge breakdown threshold. Pre-ionization usually adopts spark needle array discharge ultraviolet light pre-ionization method, which is arranged on both sides of the discharge electrode. Due to the requirement of insulation distance, the spark needle is far away from the discharge area, which makes the transmission loss of the generated ultraviolet light very large, thus making the pre-ionization effect not tall. Moreover, because the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/03H01S3/038
CPCH01S3/03H01S3/0384
Inventor 郭劲邵春雷陈飞谢冀江
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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