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CN-224217894-U - Laser crystal fixing structure and solid laser

CN224217894UCN 224217894 UCN224217894 UCN 224217894UCN-224217894-U

Abstract

The utility model relates to a laser crystal fixing structure, which comprises a crystal seat, wherein a through hole, a liquid inlet hole and a liquid outlet hole are formed in the crystal seat, mounting parts extending towards the axial direction of the through hole are arranged on the side walls of two ends of the through hole, and the liquid inlet hole and the liquid outlet hole are respectively communicated with the through hole to form a cooling liquid circulation channel. The utility model also relates to a solid laser, and the laser crystal fixing structure and the solid laser provided by the utility model fix the laser crystal through the mounting parts at the two ends, so that a gap is formed between the laser crystal and the through hole, the laser crystal can be soaked in cooling liquid in the cooling process, and the cooling efficiency is improved.

Inventors

  • ZHU ZHUO
  • YU LEI
  • CUI XIAOMIN

Assignees

  • 苏州英谷激光科技股份有限公司

Dates

Publication Date
20260508
Application Date
20250423

Claims (10)

  1. 1. A laser crystal fixing structure, characterized by comprising: The crystal seat is provided with a through hole, a liquid inlet hole and a liquid outlet hole, the side walls of the two ends of the through hole are provided with mounting parts extending towards the axial direction of the through hole, and the liquid inlet hole and the liquid outlet hole are respectively communicated with the through hole to form a cooling liquid circulation channel.
  2. 2. A laser crystal attachment structure as defined in claim 1, wherein: The through hole is a round hole, the mounting part is annular, and the diameter of the through hole is 0.5mm larger than that of the mounting part.
  3. 3. A laser crystal attachment structure as defined in claim 1, wherein: the crystal seat comprises a crystal cover and a base, wherein the crystal cover is connected with the base and forms the through hole after being connected.
  4. 4. A laser crystal attachment structure as defined in claim 3, wherein: the connecting surface of the crystal cover and the base coincides with the axis of the through hole.
  5. 5. A laser crystal attachment structure as defined in claim 3, wherein: The liquid inlet holes and the liquid outlet holes are all positioned on the base.
  6. 6. A laser crystal attachment structure as defined in claim 3, wherein: The crystal cover is provided with a through hole which penetrates through the crystal cover, the base is provided with a threaded hole, and the through hole is concentric with the threaded hole.
  7. 7. A laser crystal attachment structure as defined in claim 3, wherein: The crystal cover is connected with the connecting surface of the base through indium welding.
  8. 8. A laser crystal attachment structure as defined in claim 1, wherein: The mounting part is provided with a first sealing ring groove, a first sealing ring is arranged in the first sealing ring groove, the liquid inlet hole and the liquid outlet hole are both provided with a second sealing ring groove, and a second sealing ring is arranged in the second sealing ring groove.
  9. 9. A laser crystal attachment structure as defined in claim 1, wherein: The axes of the liquid inlet hole and the liquid outlet hole are parallel to each other and form an included angle with the axis of the through hole.
  10. 10. A solid state laser comprising a fixation structure according to any of claims 1-9 for fixing the laser crystal, a laser crystal and a pump source for injecting pump light into the laser crystal for generating laser light.

Description

Laser crystal fixing structure and solid laser Technical Field The present utility model relates to the field of solid laser technology, and in particular, to a laser crystal fixing structure and a solid laser. Background With the development of laser technology, it is a clear development goal to output higher power. The end-pumped approach has a significant advantage in terms of higher beam quality compared to other pumping approaches. However, the disadvantages of end-pumping are also evident, i.e. when end-pumping is used, the more concentrated pump light brings about a more pronounced thermal effect. Therefore, heat dissipation is a problem that end-pumping is not negligible. In the existing heat dissipation mode, heat is dissipated by directly utilizing heat conducted by the crystal seat, and a cooling water channel is opened on the crystal seat, and water cooling is conducted by utilizing the cooling water channel, but the direct conduction mode is only suitable for low pumping energy, and the water cooling heat dissipation mode is limited by the volume of the crystal seat, so that the aperture of a water channel is smaller, and the cooling effect is poor. Disclosure of utility model In view of this, the present utility model provides a laser crystal fixing structure and a solid laser, which solve the problem of heat dissipation of the laser crystal during end pumping. In order to achieve the above purpose, the technical scheme of the utility model for solving the technical problems is to provide a laser crystal fixing structure, which comprises a crystal seat, wherein the crystal seat is provided with a through hole, a liquid inlet hole and a liquid outlet hole, the side walls of the two ends of the through hole are provided with mounting parts extending towards the axial direction of the through hole, and the liquid inlet hole and the liquid outlet hole are respectively communicated with the through hole to form a cooling liquid circulation channel. Preferably, the through hole is a circular hole, the mounting portion is annular, and the diameter of the through hole is 0.5mm larger than the diameter of the mounting portion. Preferably, the crystal seat comprises a crystal cover and a base, wherein the crystal cover is connected with the base, and the through hole is formed after the crystal cover is connected with the base. Preferably, the connecting surface of the crystal cover and the base coincides with the axis of the through hole. Preferably, the liquid inlet hole and the liquid outlet hole are both positioned on the base. Preferably, the crystal cover is provided with a through hole which penetrates through, the base is provided with a threaded hole, and the through hole is concentric with the threaded hole. Preferably, the connection surface of the crystal cover and the base is in indium welding. Preferably, the mounting part is provided with a first sealing ring groove, a first sealing ring is arranged in the first sealing ring groove, the liquid inlet hole and the liquid outlet hole are both provided with a second sealing ring groove, and a second sealing ring is arranged in the second sealing ring groove. Preferably, the axes of the liquid inlet hole and the liquid outlet hole are parallel to each other, an included angle is formed between the axes of the liquid inlet hole and the liquid outlet hole, and the included angle is 90 degrees. The utility model also provides a solid laser, which comprises a fixed structure, a laser crystal and a pumping source, wherein the fixed structure is used for fixing the laser crystal, and the pumping source is used for injecting the pumping light into the laser crystal to generate laser. Compared with the prior art, the laser crystal fixing structure and the solid laser provided by the utility model have the following beneficial effects: 1. The laser crystals are fixed through the mounting parts at the two ends of the through holes, so that gaps are formed between the laser crystals and the through holes, the laser crystals can be soaked in cooling liquid in the cooling process, the cooling efficiency is improved, and heat accumulation caused by insufficient heat dissipation capacity is avoided; 2. The corresponding cooling liquid temperature can be set according to different pumping power, so that the lower thermal effect is ensured to be generated; 3. The gap between the laser crystal and the through-hole is such that the laser crystal is not hard-wired to the structure and is thus not subject to compressive stress when thermal expansion occurs. Drawings Fig. 1 is a schematic structural diagram of a laser crystal fixing structure according to a first embodiment of the present utility model; FIG. 2 is a schematic cross-sectional view of FIG. 1; FIG. 3 is a schematic diagram of the explosive structure of FIG. 1; FIG. 4 is an enlarged view of a portion of FIG. 3 at A; FIG. 5 is a schematic diagram of the position structure of the liquid inlet and outlet i