Construction method and device of traveling wave cavity high-power carbon dioxide laser

Abstract

The invention provides a construction method and device of a traveling wave cavity high-power carbon dioxide laser, and relates to the field of optical engineering and laser application. The laser comprises a concave mirror, an annular total reflection mirror, a plane output mirror, discharge tubes, water-cooled tubes, positive electrodes, negative electrodes, gas storage chambers, a gas return pipe, discharge tube supports and laser supports. According to the traveling wave cavity high-power carbon dioxide laser, laser beams output from the plane output mirror are distributed symmetrical about a symmetry axis of the laser, and the laser has the advantages of being high in power, good in laser beam quality, compact in structure and small in size and is one of main devices for laser machining. The construction method and device are characterized in that sixteen combined tubes are symmetrically placed on the symmetry axis of the laser, a direct-current power source is used for excitation, and high-power laser light is output under the effect of a traveling wave cavity composed of the concave mirror, the annular total reflection mirror and the plane output mirror. The high-power carbon dioxide laser light can be directly used for laser machining, material processing and the like, and low-power carbon dioxide laser light can be used for laser beautifying, laser surface processing and the like.

Description

technical field [0001] The present invention relates to the fields of optical engineering and laser applications, in particular to a traveling-wave cavity high-power carbon dioxide laser, which mainly uses a DC power supply to excite each discharge tube of the laser and obtains a high-power carbon dioxide laser output device and construction method under the action of a resonant cavity mirror . High-power carbon dioxide lasers are used in laser industrial processing due to their advantages of high power and high beam quality, and are one of the most important devices in laser processing. Background technique [0002] Carbon dioxide lasers are the earliest molecular lasers in the world, and high-power carbon dioxide lasers are mainly used in laser industrial processing. In recent years, international laser processing systems mainly use Nd:YAG lasers and carbon dioxide lasers, and their output value has reached more than 4 billion US dollars, of which the output value of carb...

AI Technical Summary

Problems solved by technology

The above three types of lasers have their own advantages, but there are also shortcomings. The axial fast flow and cross flow carbon dioxide lasers have high output power and can be widely used in the field of laser industrial processing. However, the volume of such lasers is too large, so the processing machine The head and the laser can only be separated, and there is often a long distance between the two. At present, there is no optical fiber for transmitting carbon dioxide laser, so the linear transmission and optical path control of the laser are realized by optical components and corresponding control measures.

In contrast, the slab waveguide carbon dioxide laser is small in size and can be directly installed on the processing machine tool, but the output power of the laser is limited by the structure and it is difficult to increase, and the beam quality is also limited to a certain extent

[0003] In the existing patents, although the construction method and device of high-power carbon dioxide laser have been proposed (invention patent name: construction method and device of high-power gas laser, application number: CN200310104017; invention patent name: phase-locked axisymmetric folding Combined carbon dioxide laser, application number: CN200810044294), this type of laser adopts a unilateral folding method: 1) To increase the output power of the laser, it can only be achieved by extending the discharge tube, which will cause the laser to be too bulky and inconvenient to use; 2 ) In the case of ensuring the volume of the laser, the output power cannot meet the requirements

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