Solid-state laser condensation cavity and solid-state laser

Abstract

The invention discloses a solid laser light-gathering cavity and a solid laser, and relates to the technical field of laser, the solid laser light-gathering cavity and the solid laser are provided with a light-gathering cavity main body, a heat conduction sleeve and a water cooling sleeve, and light source heat in the light-gathering cavity main body is transmitted to the water cooling sleeve through the heat conduction sleeve; water in the water-cooled jacket can cool heat and radiate and refract the light source at the same time, when the light source irradiates the condensation reflection coating and the metal reflection film in the water-cooled jacket, the light source is transmitted to the crystal rod again through the water and the heat conduction jacket, and when the light source reaches the heat conduction graphite film in the water-cooled jacket through the condensation reflection coating and the metal reflection film, the heat conduction graphite film is cooled. The heat-conducting graphite film can transmit heat to the water-cooled jacket, and meanwhile, the heat can be transmitted out through the radiating fins, so that the heat can be quickly and effectively dissipated, and the surface of the solid laser is prevented from being hot.

Description

Technical Field

[0001] The invention relates to the field of laser technology, in particular to a solid laser focusing cavity and a solid laser. Background Art

[0002] At present, with the continuous development of science and technology, most equipment needs to use cables to transmit signals, including bridge cables, robotic arm cables, new energy charging cables, shield machine cables, drag chain cables, field optical cables and other fields. In order to ensure that the cables are durable, certain corrections need to be made to their materials and performance.

[0003] For example, the invention with patent number 2019104438018 discloses a solid-state laser focusing cavity, which is a cylinder made of transparent material. The focusing cavity is provided with a filter material that can reflect light waves in a specific band. The filter material on the focusing cavity can reflect light waves in a specific band back into the focusing cavity, while light waves in other bands pass through the focusing cavity to the outside of the focusing cavity, thereby solving the heat dissipation problem of the focusing cavity and facilitating the improvement of the repetition frequency of the solid-state laser. The heat dissipation outside the focusing cavity in a pulsed solid-state laser is easy to solve, so the present invention is particularly suitable for solid-state lasers used in the field; For example, the invention with patent number 2023106344454 discloses a separate solid-state laser focusing cavity, which belongs to the field of solid-state laser technology. It is composed of multiple focusing cavity components that are buckled together. The inner cavity surface of each focusing cavity component is an arc surface. The internal cross-section of the focusing cavity after buckling is circular. Each focusing cavity component is provided with multiple assembly pins on one side, and multiple assembly grooves that cooperate with the assembly pins on the other side; each focusing cavity component is provided with fixing pins at both ends, such as focusing cavity fixing side plates, and each fixing pin focusing cavity component is provided with a water channel along the length direction. The laser is connected to the main water channel to provide coolant for heat dissipation. The present invention adopts a separate structure to manufacture a single component, which is assembled into a focusing cavity when used, which greatly reduces the processing difficulty, especially makes the inner cavity surface processing easier and reduces the processing cost; adopts a metal structure and adds a water channel, the material is stable, and the heat dissipation is excellent; The solid laser focusing cavity in the above patents dissipates heat by setting up filter materials or coolants. The filter materials cannot reflect light waves of all color segments, and the coolants need to pass through water channels and external equipment to achieve cooling operations, which increases the resource waste of the equipment and affects the heat dissipation efficiency. Not only is the heat dissipation efficiency low, but the surface of the solid laser is prone to heating. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a solid laser focusing cavity and a solid laser, which solve the problems of low heat dissipation efficiency and easy heating of the surface of the solid laser.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solutions: a solid laser focusing cavity, including a focusing cavity body, a heat-conducting sleeve is arranged outside the focusing cavity body, a water-cooling sleeve is installed outside the heat-conducting sleeve, a first fixed sleeve is fixedly installed at one end of the water-cooling sleeve, and a second fixed sleeve is arranged at the other end of the water-cooling sleeve, a crystal rod is arranged inside the focusing cavity body, and a light source is arranged outside the crystal rod.

[0006] Preferably, a cavity is provided inside the water cooling jacket, a light-concentrating reflective coating is provided outside the cavity, and a metal reflective film is provided outside the light-concentrating reflective coating.

[0007] Furthermore, a thermally conductive graphite film is disposed outside the metal reflective film, and the thermally conductive graphite film is adhered to the inner wall of the water cooling jacket.

[0008] Furthermore, a heat dissipation fin is fixedly mounted on the lower end of the water cooling jacket, and the heat dissipation fin is attached to the outer surface of the thermal conductive graphite film.

[0009] A solid laser comprises the above-mentioned focusing cavity body, a heat conductive sleeve and a water cooling sleeve, wherein a support plate is arranged outside the water cooling sleeve, a laser lower shell is arranged outside the water cooling sleeve, a laser upper shell is detachably mounted on the upper side of the laser lower shell, and a base is fixedly mounted on the lower end of the laser lower shell.

[0010] Preferably, a first side cover is disposed at one end of the laser lower shell and the laser upper shell, and a second side cover is disposed at the other end of the laser lower shell and the laser upper shell.

[0011] Preferably, a total reflection mirror is detachably installed inside the first side cover, a coating is provided on the surface of the total reflection mirror, and a half reflection mirror is provided inside the second side cover.

[0012] Furthermore, connection grooves are provided on both sides of the laser lower shell, and the laser upper shell is mounted on the connection grooves by bolts.

[0013] Furthermore, grooves are arranged on the upper side of the upper shell of the laser, and there are two groups of grooves in total.

[0014] Furthermore, mounting holes are provided on the surface of the base, and evenly distributed anti-slip grooves are provided on the bottom of the base.

[0015] The present invention provides a solid laser focusing cavity and a solid laser. Compared with the prior art, the present invention has the following beneficial effects: The solid-state laser focusing cavity and the solid-state laser are provided with a focusing cavity body, a heat-conducting sleeve and a water-cooling sleeve. The heat of the light source inside the focusing cavity body is transferred to the water-cooling sleeve through the heat-conducting sleeve. The water inside the water-cooling sleeve can cool the heat and simultaneously radiate and refract the light source. When the light source irradiates the focusing reflective coating and the metal reflective film inside the water-cooling sleeve, it is transferred to the crystal rod again through the water and the heat-conducting sleeve. When the light source reaches the heat-conducting graphite film inside the water-cooling sleeve through the focusing reflective coating and the metal reflective film, the heat-conducting graphite film transfers the heat to the water-cooling sleeve. Meanwhile, the heat is also transferred out through the heat dissipation fins. Thus, the heat can be quickly and effectively dissipated and the surface of the solid-state laser can be prevented from heating up. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 is a cross-sectional view of the water cooling jacket of the present invention; Figure 3 It is a schematic diagram of the installation structure of the upper shell of the laser in the present invention; Figure 4 It is a schematic diagram of the structure of the solid laser in the present invention; Figure 5 It is a structural schematic diagram of the base in the present invention; Figure 6 It is a schematic diagram of the installation structure of the first side cover and the second side cover in the present invention.

[0017] In the figure: 1. focusing cavity body; 2. first fixing sleeve; 3. second fixing sleeve; 4. heat-conducting sleeve; 5. water-cooling sleeve; 501. heat-conducting graphite film; 502. metal reflective film; 503. focusing reflective coating; 504. cavity; 505. heat dissipation fins; 6. light source; 7. crystal rod; 8. support plate; 9. laser lower shell; 901. connecting groove; 10. laser upper shell; 1001. groove; 11. base; 1101. mounting hole; 1102. anti-skid groove; 12. second side cover; 13. first side cover; 14. half-reflecting mirror; 15. full-reflecting mirror; 1501. coating. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-6The present invention provides a technical solution: a solid laser focusing cavity and a solid laser, comprising a focusing cavity body 1, a heat-conducting sleeve 4 is arranged outside the focusing cavity body 1, the material of the heat-conducting sleeve 4 can be selected from heat-conducting silicone or other composite materials with good thermal conductivity, a water-cooling sleeve 5 is installed outside the heat-conducting sleeve 4, a first fixed sleeve 2 is fixedly installed at one end of the water-cooling sleeve 5, and a second fixed sleeve 3 is arranged at the other end of the water-cooling sleeve 5, a crystal rod 7 is arranged inside the focusing cavity body 1, a light source 6 is arranged outside the crystal rod 7, a cavity 504 is arranged inside the water-cooling sleeve 5, and a cavity 504 is arranged inside It is filled with clean water, which can be used to cool the heat from light. A focusing reflective coating 503 is arranged on the outside of the cavity 504, a metal reflective film 502 is arranged on the outside of the light-focusing reflective coating 503, a thermally conductive graphite film 501 is arranged on the outside of the metal reflective film 502, the thermally conductive graphite film 501 is attached to the inner wall of the water-cooling jacket 5, and a heat dissipating fin 505 is fixedly installed on the lower end of the water-cooling jacket 5, the heat dissipating fin 505 is attached to the outer surface of the thermally conductive graphite film 501, and the heat dissipating fin 505 can transfer heat to the bottom of the laser lower shell 9 of the solid-state laser, so as to dissipate the heat more quickly and effectively.

[0020] A solid-state laser comprises the above-mentioned focusing cavity main body 1, heat-conducting sleeve 4 and water-cooling sleeve 5, the water-cooling sleeve 5 is provided with a support plate 8 on the outside, a laser lower shell 9 is provided on the outside of the water-cooling sleeve 5, a laser upper shell 10 is detachably mounted on the upper side of the laser lower shell 9, a base 11 is fixedly mounted on the lower end of the laser lower shell 9, a first side cover 13 is provided at one end of the laser lower shell 9 and the laser upper shell 10, a power interface is provided on the outside of the first side cover 13 for connecting the power supply so that the light source 6 can emit light, a second side cover 12 is provided at the other end of the laser lower shell 9 and the laser upper shell 10, a total reflection mirror 15 is detachably mounted inside the first side cover 13, and the total reflection mirror 11 is fixedly mounted on the lower end of the laser lower shell 9. The surface of the laser housing 10 is provided with a coating 1501, through which all light can be reflected. A half-reflecting mirror 14 is provided inside the second side cover 12. Connection grooves 901 are provided on both sides of the laser lower shell 9. The laser upper shell 10 is installed on the connection grooves 901 by bolts. A groove 1001 is provided on the upper side of the laser upper shell 10. There are two groups of grooves 1001 in total. Mounting holes 1101 are provided on the surface of the base 11. The bottom of the base 11 is provided with evenly distributed anti-skid grooves 1102. By providing the anti-skid grooves 1102, the contact area between the laser lower shell 9 and the base 11 can be reduced, so that the heat of the laser lower shell 9 can be better dissipated.

[0021] By providing the focusing cavity body 1, the heat-conducting sleeve 4 and the water-cooling sleeve 5, the heat of the light source 6 inside the focusing cavity body 1 is transferred to the water-cooling sleeve 5 through the heat-conducting sleeve 4, and the water inside the water-cooling sleeve 5 can cool the heat while diverging and refracting the light source 6. When the light source 6 irradiates the focusing reflective coating 503 and the metal reflective film 502 inside the water-cooling sleeve 5, it is transferred to the crystal rod 7 again through the water and the heat-conducting sleeve 4. When the light source 6 reaches the heat-conducting graphite film 501 inside the water-cooling sleeve 5 through the focusing reflective coating 503 and the metal reflective film 502, the heat-conducting graphite film 501 will transfer the heat to the water-cooling sleeve 5, and the heat will also be transferred out through the heat dissipation fins 505, so that the heat can be quickly and effectively dissipated to prevent the surface of the solid laser from getting hot.

[0022] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

Claims

1. A solid laser focusing cavity, comprising a focusing cavity body (1), characterized in that: A heat-conducting sleeve (4) is arranged outside the focusing cavity body (1), a water-cooling sleeve (5) is installed outside the heat-conducting sleeve (4), a first fixing sleeve (2) is fixedly installed at one end of the water-cooling sleeve (5), and a second fixing sleeve (3) is arranged at the other end of the water-cooling sleeve (5), a crystal rod (7) is arranged inside the focusing cavity body (1), and a light source (6) is arranged outside the crystal rod (7).

2. The solid-state laser focusing cavity according to claim 1, characterized in that: A cavity (504) is provided inside the water cooling jacket (5), a light-collecting reflective coating (503) is provided outside the cavity (504), and a metal reflective film (502) is provided outside the light-collecting reflective coating (503).

3. The solid-state laser focusing cavity according to claim 2, characterized in that: A heat-conducting graphite film (501) is arranged outside the metal reflective film (502), and the heat-conducting graphite film (501) is adhered to the inner wall of the water cooling jacket (5).

4. The solid-state laser focusing cavity according to claim 4, characterized in that: A heat dissipation fin (505) is fixedly mounted on the lower end of the water cooling jacket (5), and the heat dissipation fin (505) is attached to the outer surface of the heat-conducting graphite film (501).

5. A solid-state laser, characterized in that: The invention comprises a focusing cavity body (1), a heat-conducting sleeve (4) and a water-cooling sleeve (5) as claimed in claim 1, wherein a support plate (8) is arranged outside the water-cooling sleeve (5), a laser lower shell (9) is arranged outside the water-cooling sleeve (5), a laser upper shell (10) is detachably mounted on the upper side of the laser lower shell (9), and a base (11) is fixedly mounted on the lower end of the laser lower shell (9).

6. The solid-state laser according to claim 5, characterized in that: A first side cover (13) is provided at one end of the laser lower shell (9) and the laser upper shell (10), and a second side cover (12) is provided at the other end of the laser lower shell (9) and the laser upper shell (10).

7. The solid-state laser according to claim 6, characterized in that: A total reflection mirror (15) is detachably mounted inside the first side cover (13), a coating (1501) being provided on the surface of the total reflection mirror (15), and a half reflection mirror (14) is provided inside the second side cover (12).

8. The solid-state laser according to claim 7, characterized in that: The laser lower shell (9) has connection grooves (901) on both sides, and the laser upper shell (10) is mounted on the connection grooves (901) by means of bolts.

9. The solid-state laser according to claim 8, characterized in that: The upper side of the laser upper shell (10) is provided with grooves (1001), and a total of two groups of the grooves (1001) are provided.

10. The solid-state laser according to claim 9, characterized in that: The surface of the base (11) begins to have a mounting hole (1101), and the bottom of the base (11) is provided with evenly distributed anti-slip grooves (1102).

Images