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Phase-locked two-mirror cavity concurrent combined carbon dioxide laser

A phase-locking, carbon dioxide technology, applied in the fields of optics, optical engineering and terahertz lasers, can solve the problems of high output mirror power density, inability to provide laser light source for terahertz lasers, and coherence that cannot meet laser rapid processing and high-precision processing. , to achieve good coherence and avoid optical effects

Active Publication Date: 2016-01-13
XIHUA UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For high-power lasers with many discharge tubes, the symmetrical array laser beams intersect at a point on the mirror surface of the output mirror, which will inevitably lead to excessive local power density of the output mirror, which will cause nonlinear effects and cause excessive temperature of the output mirror, which will cause thermal lens effect, resulting in poor output beam quality
Existing invention patent, invention patent name: a construction method and device of a two-mirror cavity high-power array gas laser, application number: CN201510009838, using two mirror cavities, although it can effectively avoid the above-mentioned excessive local laser power density and temperature high, but its coherence cannot meet the requirements of laser fast processing and high-precision processing, nor can it provide a stable and ideal laser source for terahertz lasers

Method used

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  • Phase-locked two-mirror cavity concurrent combined carbon dioxide laser
  • Phase-locked two-mirror cavity concurrent combined carbon dioxide laser
  • Phase-locked two-mirror cavity concurrent combined carbon dioxide laser

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Effect test

Embodiment 1

[0043] refer to figure 1 , 2, 3, take 9 first discharge tube 1, second discharge tube 2, third discharge tube 3, fourth discharge tube 4, fifth discharge tube 5, sixth discharge tube 6, seventh discharge tube 7, eighth discharge tube Discharge tube 8, the ninth discharge tube 9, the axes of each discharge tube are located on the same conical surface, and intersect at the common intersection point 25, which is the phase-locked two-mirror cavity co-point combined carbon dioxide laser, the length of each discharge tube All are 1.2m, internal diameter is 12mm, and external diameter is 14mm, and the first concave total reflection mirror 37, the second concave total reflection mirror 38, the third concave total reflection mirror 37, the second concave total reflection mirror 38, and the third concave total reflection mirror are symmetrically placed on the mirror surface of the combined mirror 19. Mirror 39, fourth concave total reflection mirror 40, fifth concave total reflection m...

Embodiment 2

[0045] refer to figure 1 , 4 , refer to figure 1 , 2 , 3, take 9 first discharge tube 1, second discharge tube 2, third discharge tube 3, fourth discharge tube 4, fifth discharge tube 5, sixth discharge tube 6, seventh discharge tube 7, eighth discharge tube Discharge tube 8, the ninth discharge tube 9, the axes of each discharge tube are located on the same conical surface, and intersect at the common intersection point 25, which is the phase-locked two-mirror cavity co-point combined carbon dioxide laser, the length of each discharge tube Both are 1.2m, the inner diameter is 12mm, the outer diameter is 14mm, the radius of curvature of the spherical mirror 51 is 1.3m, and the distance to the first support 20 of the discharge tube is 10cm. The output mirror 26 is a curved convex mirror, placed on the symmetry axis 29 of the laser, and located at 20cm to the right of the common intersection point 25, the radius of curvature of the first reflecting surface is 20cm, the radius...

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Abstract

The invention provides a phase-locked two-mirror cavity concurrent combined carbon dioxide laser, comprising a quartz discharge tube, a combined mirror or a spherical mirror, an output mirror, a phase-locked mirror, a convergent lens and a holder. Symmetrical oscillating beams have a common intersection in a resonant cavity, and are symmetrically distributed on the surface of the output mirror, thus effectively avoiding the optical effect caused by over high local power density of the output mirror. The laser is characterized in that the oscillation of beams in two symmetrical concave-concave mirror cavities is controlled by reflection of the second reflective surface of the phase-locked mirror on beams generated by the two on-axis cavities, so the obtained output beams have extremely good coherence, and the laser is an ideal light source for laser medicine, fast laser processing and generation of terahertz wave.

Description

technical field [0001] The invention relates to the fields of optics, optical engineering and terahertz lasers, in particular to a phase-locked co-point combined carbon dioxide laser with two mirror cavities. Background technique [0002] The carbon dioxide laser is the earliest molecular gas laser. The discharge tube is a circular discharge tube and adopts DC discharge, but the laser needs to take cooling measures. The 1-meter-long discharge tube of this laser device outputs 40W carbon dioxide laser; in recent years, the international laser processing The system mainly uses carbon dioxide lasers, and its output value exceeds 3 billion US dollars. Waveguide, axial fast-flow, and cross-flow carbon dioxide lasers are the most important lasers in laser processing systems. Waveguide-type carbon dioxide lasers are directly mounted on machine tools for processing due to their light weight and small size. Axial fast-flow carbon dioxide lasers use gas convection The waste heat of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S3/223H01S3/08H01S3/034H01S3/098
Inventor 徐勇根田欢欢杨婷王时建马在如
Owner XIHUA UNIV
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