CN111244730A - Laser device - Google Patents

Abstract

The invention discloses a laser, comprising: a laser base, a cooling cavity is arranged on the laser base, and a light outlet hole is also arranged at the front end of the laser base; a laser body, the laser body includes a laser cavity, Xenon lamp and laser crystal; total reflection mirror assembly, which is arranged in the rear end of the laser base for reflecting the laser light emitted by the laser crystal; half mirror assembly, the half mirror assembly It is arranged in the front end of the laser base and cooperates with the light exit hole to reflect part of the laser light emitted by the laser crystal and output another part of the laser light; and a laser head, which is arranged on the laser base The front end of the seat is matched with the light outlet hole. By adopting the above design, the structure of the present invention is extremely ingenious, the assembly is simplified, and the labor cost can be greatly saved.

Description

a laser

technical field

The present invention relates to the field of lasers, in particular to a laser.

Background technique

Laser - A device capable of emitting laser light. The first microwave quantum amplifier was made in 1954, and a highly coherent microwave beam was obtained. In 1958, A.L. Xiao Luo and C.H. Townes extended the microwave quantum amplifier principle to the optical frequency range, and in 1960 T.H. Maiman and others made the first ruby laser. In 1961, A. Jia Wen et al made a helium-neon laser. In 1962, R.N. Hall and others created the gallium arsenide semiconductor laser. Since then, there have been more and more types of lasers. According to the working medium, lasers can be divided into four categories: gas lasers, solid-state lasers, semiconductor lasers and dye lasers. Recently, free electron lasers have also been developed, and high-power lasers are usually pulsed. The existing lasers on the market have very complex structures and many parts, which are very complicated to assemble, which greatly increases the labor cost.

Therefore, there is an urgent need to design a laser that can solve one or more of the above problems.

SUMMARY OF THE INVENTION

In order to solve one or more problems existing in the prior art, the present invention provides a laser.

The technical solution adopted by the present invention to achieve the above purpose is: a laser, the laser comprising:

a laser base, a cooling cavity is provided on the laser base for cooling the laser, and a light outlet hole is also provided at the front end of the laser base;

A laser body, the laser body includes a laser cavity, a xenon lamp and a laser crystal, the laser cavity is fixed in the laser base and is matched with the cooling cavity, and the xenon lamp is arranged on the laser cavity , the two ends of the xenon lamp are connected to the power source through the lamp connection seat, the laser crystal is arranged on the laser cavity, and the laser crystal converts the light of the xenon lamp into laser light;

A total reflection mirror assembly, the total reflection mirror assembly is arranged in the rear end of the laser base, and is used for reflecting the laser light emitted by the laser crystal;

a half-mirror assembly, which is arranged in the front end of the laser base and cooperates with the light exit hole for reflecting part of the laser light emitted by the laser crystal and outputting another part of the laser light; and

The laser head is arranged at the front end of the laser base and is matched with the light exit hole.

In some embodiments, the laser base includes a base, a front end plate and a back end plate, a cooling cavity is provided on the bottom plate of the base, and the cooling cavity includes a liquid inlet cavity and a liquid outlet cavity for cooling The front end plate and the rear end plate are respectively fixed on the front and rear ends of the base, and the light exit hole is arranged on the front end plate for laser emitting.

In some embodiments, the liquid inlet chamber includes a first liquid inlet and a first liquid outlet, the first liquid inlet is provided on the bottom surface of the bottom plate of the base, and is used for cooling liquid to enter, the The first liquid outlet is arranged on the top surface of the base bottom plate, and is used for cooling liquid to flow into the cooling system of the laser cavity from the liquid inlet cavity;

The liquid outlet cavity includes a second liquid inlet port and a second liquid outlet port, the second liquid inlet port is arranged on the top surface of the base bottom plate, and is used for the cooling liquid to flow in and out from the cooling system of the laser cavity. In the liquid cavity, the second liquid outlet is arranged on the bottom surface of the bottom plate of the base, and is used for cooling liquid to flow out after cooling the laser cavity.

In some embodiments, the base is further provided with a first sealing groove, the first sealing groove is arranged around the first liquid outlet and the second liquid inlet, and the first sealing groove is A first sealing ring is arranged on the groove, and the first sealing ring is matched with the laser cavity to prevent leakage of cooling liquid;

The front end plate and the rear end plate are respectively provided with a second sealing groove, and a second sealing ring is provided on the second sealing groove, and the second sealing ring is respectively connected with the liquid inlet chamber and the outlet. The fluid cavity is matched to prevent the coolant from leaking out.

In some embodiments, the laser cavity includes an upper cover and a lower cavity, the lower cavity is integrally formed, the upper cover and the lower cavity are detachably connected, and two ends of the lower cavity are respectively provided with the The first through hole matched with the xenon lamp and the second through hole matched with the laser crystal, the bottom surface of the lower cavity is provided with two cooling ports, and the two cooling ports are respectively connected with the first liquid outlet. Matching with the second liquid inlet, it is used for liquid inlet and outlet.

In some embodiments, a ceramic cavity is further provided in the lower cavity, the xenon lamp and the laser crystal are respectively disposed in the ceramic cavity and pass through the first through hole and the second through hole respectively , the laser cavity is also provided with a crystal pressing block, the crystal pressing block is fixed at both ends of the lower cavity, and the crystal pressing block is provided with a third through hole matched with the laser crystal, For laser crystal insertion.

In some embodiments, the total reflection mirror assembly includes a first mounting seat and a total reflection mirror, the first mounting seat includes an upper layer, a middle layer and a lower layer, and a reflection through hole is provided at the center of the first mounting seat, The reflection through hole penetrates the upper layer, the middle layer and the lower layer, the upper layer is provided with a reflection mirror slot, the reflection mirror slot and the reflection through hole are coaxially arranged, and the surrounding of the reflection mirror slot is also A first threaded hole is provided for screwing a bolt to fix the total reflection mirror arranged in the mirror groove.

In some embodiments, the upper layer and the middle layer are fixedly connected by two first connecting columns, the two first connecting columns are arranged diagonally, and the middle layer and the lower layer are connected by two first connecting columns. The two second connecting columns are fixedly connected, the two second connecting columns are arranged diagonally, and the straight line formed by the two first connecting columns and the straight line formed by the two second connecting columns are perpendicular to each other.

In some embodiments, two second threaded holes and two third threaded holes are further provided at the edge of the upper layer, the two second threaded holes pass through the upper layer, and the two second threaded holes Diagonally arranged and perpendicular to the straight line formed by the two first connecting columns, the two third threaded holes pass through the upper layer and the middle layer, and the two third threaded holes are diagonal The line is arranged and is perpendicular to the straight line formed by the two second connecting columns.

In some embodiments, the half mirror assembly includes a second mounting seat and a half mirror, the second mounting seat is the same as the first mounting seat, and the half mirror is fixed on the second mounting seat by bolts on the mount.

The beneficial effects of the present invention are: compared with the prior art, the present invention includes: a laser base, a cooling cavity is arranged on the laser base for cooling the laser, and the front end of the laser base is further provided with a cooling cavity. a light exit hole; a laser body, the laser body includes a laser cavity, a xenon lamp and a laser crystal, the laser cavity is fixed in the laser base and is matched with the cooling cavity, and the xenon lamp is arranged in the laser On the cavity, the two ends of the xenon lamp are connected to the power supply through the lamp connection seat, the laser crystal is arranged on the laser cavity, and the laser crystal converts the light of the xenon lamp into laser and emits it; the total reflection mirror assembly, The full-reflection mirror assembly is arranged in the rear end of the laser base for reflecting the laser light emitted by the laser crystal; the half-reflection mirror assembly is arranged in the front end of the laser base , which cooperates with the light exit hole and is used to reflect part of the laser light emitted by the laser crystal and output another part of the laser light; and a laser head, which is arranged at the front end of the laser base and is opposite to the light exit hole. Cooperate. By adopting the above design, the structure of the present invention is extremely ingenious, the assembly is simplified, and the labor cost can be greatly saved.

Description of drawings

1 is a schematic structural diagram of a preferred embodiment of the present invention;

Fig. 2 is the installation schematic diagram inside the preferred embodiment of the present invention;

3 is a schematic structural diagram of a laser base according to a preferred embodiment of the present invention;

4 is a schematic structural diagram of a base according to a preferred embodiment of the present invention;

5 is a schematic structural diagram of a laser body according to a preferred embodiment of the present invention;

6 is a schematic structural diagram of a laser cavity according to a preferred embodiment of the present invention;

7 is a schematic structural diagram of a first mounting seat according to a preferred embodiment of the present invention;

8 is a schematic structural diagram of the first mounting seat from another perspective according to the preferred embodiment of the present invention;

FIG. 9 is a schematic structural diagram of a lamp connector according to a preferred embodiment of the present invention.

In the picture:

10, laser base; 11, base; 111, first liquid outlet; 112, second liquid inlet; 113, first liquid inlet; 114, second liquid outlet; 12, front end plate; 13, rear panel;

20, laser cavity; 21, crystal compact; 211, third through hole; 22, second through hole; 23, first through hole;

30. Xenon lamp; 31. Electric wire;

40. Laser head;

50. Lamp connector;

60, first mounting seat; 61, upper layer; 611, mirror groove; 612, second threaded hole; 613, third threaded hole; 614, first threaded hole; 62, middle layer; 63, lower layer; 64, reflection pass hole; 65, the first connecting column; 66, the second connecting column.

Detailed ways

In order to make the above objects, features and advantages of the present invention easier to understand, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

As shown in FIG. 1-FIG. 9, the present invention provides a laser, and the laser includes:

The laser base 10 is provided with a cooling cavity for cooling the laser, and the front end of the laser base 10 is also provided with a light exit hole;

The laser body, the laser body includes a laser cavity 20, a xenon lamp 30 and a laser crystal, the laser cavity 20 is fixed in the laser base 10, and cooperates with the cooling cavity, and the xenon lamp 30 is arranged in the On the laser cavity 20, both ends of the xenon lamp 30 are connected to a power source through a lamp connector 50, the laser crystal is arranged on the laser cavity 20, and the laser crystal converts the light of the xenon lamp 30 into laser light shoot out;

Total reflection mirror assembly, the total reflection mirror assembly is arranged in the rear end of the laser base 10 for reflecting the laser light emitted by the laser crystal;

A half-mirror assembly, which is arranged in the front end of the laser base 11 and cooperates with the light exit hole for reflecting part of the laser light emitted by the laser crystal and outputting another part of the laser light; and

The laser head 40 is arranged at the front end of the laser base 10 and is matched with the light exit hole.

Specifically, the base 11 is assembled in a detachable manner, and a cavity is formed inside, and both ends are open. The base 11 is provided with screw holes for fixing the laser cavity 20 and the lamp connection base 50 , and the front plate 12 and the rear plate 13 are respectively provided with screw holes for fixing the second mounting seat and the first mounting seat 60 . The liquid inlet chamber and the liquid outlet chamber are arranged on the bottom plate of the base 11, and the liquid inlet chamber and the liquid outlet chamber are not communicated with each other. After the laser body and the lamp connector 50 are fixed in the base 11 with bolts, the total reflection mirror assembly and the half mirror assembly are also bolted to the rear end plate 13 and the front end plate 12 respectively. The mechanisms for supplying and collecting the cooling liquid are connected to the first liquid inlet 113 and the second liquid outlet 114 respectively. The cooling liquid enters the liquid inlet cavity from the first liquid inlet 113 and flows into the laser cavity 20 from the first liquid outlet 111 through the cooling port. After cooling the ceramic cavity, the xenon lamp 30 and the laser crystal in the laser cavity 20, The other cooling port flows into the liquid outlet cavity through the second liquid inlet port 112, and finally flows out from the second liquid outlet port 114. Such a cycle process takes away the heat in the laser cavity 20, thereby achieving the cooling effect.

In order to increase the volume of the liquid inlet cavity and the liquid outlet cavity, it is preferable in this embodiment that both the liquid inlet cavity and the liquid outlet cavity pass through the two ends of the base 11 , in this case, the front end plate 12 and the rear end plate 13 are required to connect the liquid inlet The two ends of the liquid inlet cavity and the liquid outlet cavity are blocked to avoid the leakage of the cooling liquid. In order to strengthen the leakage prevention effect, a second sealing groove is arranged on the front end plate 12 and the rear end plate 13, which is matched with the liquid inlet cavity and the liquid outlet cavity. A second sealing ring is arranged on the second sealing groove, and the second sealing ring prevents the cooling liquid from leaking out from the front end plate 12 and the rear end plate 13 . At the same time, a first sealing groove is also arranged around the first liquid outlet 111 and the second liquid inlet 112, and a first sealing ring is arranged on the first sealing groove, and the first sealing ring connects the two cooling ports of the laser cavity 20 with the first sealing ring. The connection between the first liquid outlet 111 and the second liquid inlet 112 is sealed, so that the cooling liquid will not leak out.

Laser crystals are rod-shaped, which can convert the energy provided by the outside world through an optical resonator into a spatially and temporally coherent crystal material with highly parallel and monochromatic laser light. It is the working substance of the crystal laser. In this embodiment, both the laser crystal and the xenon lamp 30 are arranged on the ceramic cavity, the ceramic cavity is arranged inside the laser cavity 20 , the two cooling ports of the laser cavity 20 and the first liquid outlet 111 on the base 11 and The second liquid inlet 112 is connected. The two ends of the xenon lamp 30 protrude from the first through holes 23 at both ends of the lower cavity respectively, and the wires 31 at both ends of the xenon lamp 30 are connected to the external power supply through the lamp connector 50 fixed on the side wall of the base 11. After the circuit is turned on, The xenon lamp 30 can emit light. Both ends of the laser crystal also extend out of the second through holes 22 at both ends of the lower cavity respectively, and are inserted into the third through holes 211 of the crystal pressing block 21 . At this time, the ceramic cavity is in an empty state, and there is a gap between the bottom of the ceramic cavity and the bottom surface of the laser cavity 20 for the cooling liquid to pass. After the xenon lamp 30 emits light, the laser crystal absorbs the light emitted by the xenon lamp 30 and converts it into laser light. The ceramic cavity is integrally formed with ceramics, and the central position is provided with a cavity through both ends, and the xenon lamp 30 and the laser crystal are fixed at the cavity.

After the laser crystal converts the light emitted by the xenon lamp 30 into laser light and emits it from both ends, the laser light at the rear end is reflected back by the total mirror assembly, and part of the laser light at the front end is reflected back by the half mirror assembly, but part of the laser light passes through the half mirror. The components are emitted to the laser head 40 through the light exit hole. The total mirror assembly and the half mirror assembly have the same structure. They are both composed of a mounting seat and a reflector, except that the reflector of the total mirror assembly is a total mirror, the reflector of the half mirror assembly is a half mirror, and the mirror of the half mirror assembly is a half mirror. The mirror is also commonly known as the output mirror.

In this embodiment, the total reflection mirror assembly includes a first mounting seat 60 and a total reflection mirror, and the half reflection mirror assembly includes a second mounting seat and a half reflection mirror, wherein the total reflection mirror assembly is fixed on the rear plate 13, and the half reflection mirror The assembly is fixed to the front end plate 12 . The first mounting seat 60 is divided into an upper layer 61, a middle layer 62 and a lower layer 63, wherein the upper layer 61 and the middle layer 62 are fixedly connected, and the middle layer 62 and the lower layer 63 are fixedly connected. The upper layer 61 and the middle layer 62 are integrally formed, and the second connecting column 66 is integrally formed with the middle layer 62 and the lower layer 63, that is, except for the first connecting column 65 and the second connecting column 66, between the upper layer 61 and the middle layer 62 and between the middle layer 62 and the lower layer 63 The rest in between is empty. A reflection through hole 64 is provided at the center of the upper layer 61, the middle layer 62 and the lower layer 63, and a reflection mirror slot 611 coaxial with the reflection through hole 64 is also arranged on the top of the upper layer 61. into the mirror groove 611, and then screw the bolt into the first threaded hole 614 around the mirror groove 611. It should be noted that the nut part of the bolt is located at the mirror groove 611, so that the mirror can be fixed in the mirror groove 611. The mirror slot 611 cannot come out.

The first mounting seat 60 is also provided with two second threaded holes 612 and two third threaded holes 613, between the two first connection posts 65, between the two second connection posts 66, and between the two second thread Diagonal lines are formed between the holes 612 and the two third threaded holes 613 respectively, and the straight line formed between the two first connecting posts 65 and the straight line formed between the two second connecting posts 66 are perpendicular to each other. The straight line formed between the two second threaded holes 612 and the straight line formed between the two third threaded holes 613 are perpendicular to each other, and the two second threaded holes 612 are arranged on the upper layer 61, that is, when screwed into When the second threaded hole 612 is screwed into the middle layer 62, the bottom of the bolt will be blocked by the upper surface of the middle layer 62. At this time, if the bolt continues to be screwed, the middle layer 62 will remain stationary, so that the threaded connection between the upper layer 61 and the bolt is upward. cocked. The two third threaded holes 613 are provided on the upper layer 61 and the middle layer 62 at the same time, that is, when a bolt is screwed into the third threaded hole 613 and screwed to the lower layer 63, the bottom of the bolt will be blocked by the upper surface of the lower layer 63, and at this time If the bolts are continued to be screwed, since the lower layer 63 remains stationary, the threaded joints between the middle layer 62 and the upper layer 61 and the bolts are lifted upwards, so as to achieve the purpose of adjusting the mirror.

It should be noted that the laser heads 40 are all in the prior art, including a built-in red light adjusting frame. As for the specific structure of the red light adjusting frame, reference may be made to the existing red light adjusting frame, and the lamp connection base 50 is also an existing red light adjusting frame. technology, which is not repeated in this embodiment.

In some embodiments, the laser base 10 includes a base 11, a front end plate 12 and a rear end plate 13, a cooling cavity is provided on the bottom plate of the base 11, and the cooling cavity includes a liquid inlet cavity and a liquid outlet The cavity is used for cooling liquid circulation to cool, the front end plate 12 and the rear end plate 13 are respectively fixed on the front and rear ends of the base 11, and the light exit holes are arranged on the front end plate 12, For laser emission.

In some embodiments, the liquid inlet chamber includes a first liquid inlet 113 and a first liquid outlet 111 , and the first liquid inlet 113 is provided on the bottom surface of the bottom plate of the base 11 for cooling liquid Enter, the first liquid outlet 111 is arranged on the top surface of the bottom plate of the base 11, and is used for the cooling liquid to flow into the cooling system of the laser cavity 20 from the liquid inlet cavity;

The liquid outlet chamber includes a second liquid inlet port 112 and a second liquid outlet port 114 , the second liquid inlet port 112 is provided on the top surface of the bottom plate of the base 11 , and is used for cooling liquid to flow from the laser cavity 20 . The cooling system of the laser flows into the liquid outlet cavity, and the second liquid outlet 114 is arranged on the bottom surface of the bottom plate of the base 11 for the cooling liquid to flow out after cooling the laser cavity 20 .

In some embodiments, the base 11 is further provided with a first sealing groove, and the first sealing groove is arranged around the first liquid outlet 111 and the second liquid inlet 112 . The first sealing groove is provided with a first sealing ring, and the first sealing ring is matched with the laser cavity 20 to prevent leakage of cooling liquid;

The front end plate 12 and the rear end plate 13 are respectively provided with second sealing grooves, the second sealing grooves are provided with second sealing rings, and the second sealing rings are respectively connected with the liquid inlet chamber and the The said liquid cavity is matched to prevent the coolant from leaking out.

In some embodiments, the laser cavity 20 includes an upper cover and a lower cavity, the lower cavity is integrally formed, the upper cover and the lower cavity are detachably connected, and two ends of the lower cavity are respectively provided with The first through hole 23 matched with the xenon lamp 30 and the second through hole 22 matched with the laser crystal, the bottom surface of the lower cavity is provided with two cooling ports, and the two cooling ports are respectively connected to the first through hole 22 . A liquid outlet 111 cooperates with the second liquid inlet 112 for liquid inlet and outlet.

In some embodiments, a ceramic cavity is further provided in the lower cavity, and the xenon lamp 30 and the laser crystal are respectively disposed in the ceramic cavity and pass through the first through hole 23 and the second through hole respectively. Through hole 22, the laser cavity 20 is also provided with a crystal pressing block 21, the crystal pressing block 21 is fixed at both ends of the lower cavity, and the crystal pressing block 21 is provided with a phase similar to the laser crystal. The matching third through hole 211 is used for inserting the laser crystal.

In some embodiments, the total reflection mirror assembly includes a first mounting seat 60 and a total reflection mirror, the first mounting seat 60 includes an upper layer 61 , a middle layer 62 and a lower layer 63 , and the first mounting seat 60 is located at the center of the A reflection through hole 64 is provided, and the reflection through hole 64 penetrates the upper layer 61 , the middle layer 62 and the lower layer 63 , and the upper layer 61 is provided with a reflection mirror slot 611 , and the reflection mirror slot 611 is connected with the reflection mirror slot 611 . The through holes 64 are arranged coaxially, and first threaded holes 614 are also provided around the mirror groove 611 for screwing the total reflection mirror arranged in the mirror groove 611 with bolts.

In some embodiments, the upper layer 61 and the middle layer 62 are fixedly connected by two first connecting columns 65, and the two first connecting columns 65 are arranged diagonally, and the middle layer 62 and the The lower layers 63 are fixedly connected by two second connecting columns 66 . The two second connecting columns 66 are arranged diagonally. The straight line formed by the two first connecting columns 65 is connected to the two second connecting columns 66 . The formed lines are perpendicular to each other.

In some embodiments, two second threaded holes 612 and two third threaded holes 613 are further provided at the edge of the upper layer 61 , the two second threaded holes 612 penetrate through the upper layer 61 , and the two The second threaded holes 612 are arranged diagonally and are perpendicular to the straight line formed by the two first connecting posts 65. The two third threaded holes 613 penetrate through the upper layer 61 and the middle layer 62, and the two The third threaded holes 613 are arranged diagonally, and are perpendicular to the straight line formed by the two second connecting posts 66 .

In some embodiments, the half mirror assembly includes a second mounting seat and a half mirror, the second mounting seat is the same as the first mounting seat 60, and the half mirror is fixed on the first mounting seat by bolts on the second mount.

To sum up, the present invention includes a laser base 10, which is provided with a cooling cavity for cooling the laser, and the front end of the laser base 10 is also provided with a light exit hole; the laser body, so The laser body includes a laser cavity 20, a xenon lamp 30 and a laser crystal. The laser cavity 20 is fixed in the laser base 10 and cooperates with the cooling cavity. The xenon lamp 30 is arranged in the laser cavity. 20, the two ends of the xenon lamp 30 are connected to the power supply through the lamp connection seat 50, the laser crystal is arranged on the laser cavity 20, and the laser crystal converts the light of the xenon lamp 30 into laser output; A mirror assembly, the total reflection mirror assembly is arranged in the rear end of the laser base 10, for reflecting the laser light emitted by the laser crystal; a half mirror assembly, the half mirror assembly is arranged in the laser base In the front end of the seat 11 , in cooperation with the light exit hole, it is used to reflect part of the laser light emitted by the laser crystal and output another part of the laser light; The front end is matched with the light outlet hole. By adopting the above design, the structure of the present invention is extremely ingenious, the assembly is simplified, and the labor cost can be greatly saved.

The above-mentioned embodiments only represent one or more embodiments of the present invention, and the descriptions thereof are specific and detailed, but should not be construed as a limitation on the scope of the invention patent. It should be pointed out that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can also be made, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention should be subject to the appended claims.

Claims (10)

1. A laser, wherein the laser comprises: a laser base, a cooling cavity is provided on the laser base for cooling the laser, and a light outlet hole is also provided at the front end of the laser base; A laser body, the laser body includes a laser cavity, a xenon lamp and a laser crystal, the laser cavity is fixed in the laser base and is matched with the cooling cavity, and the xenon lamp is arranged on the laser cavity , the two ends of the xenon lamp are connected to the power source through the lamp connection seat, the laser crystal is arranged on the laser cavity, and the laser crystal converts the light of the xenon lamp into laser light; A total reflection mirror assembly, the total reflection mirror assembly is arranged in the rear end of the laser base, and is used for reflecting the laser light emitted by the laser crystal; a half-mirror assembly, which is arranged in the front end of the laser base and cooperates with the light exit hole for reflecting part of the laser light emitted by the laser crystal and outputting another part of the laser light; and The laser head is arranged at the front end of the laser base and is matched with the light exit hole. 2. The laser according to claim 1, wherein the laser base comprises a base, a front end plate and a rear end plate, a cooling cavity is provided on the bottom plate of the base, and the cooling cavity comprises a liquid inlet A cavity and a liquid outlet cavity are used for cooling liquid circulation to cool, the front end plate and the rear end plate are respectively fixed on the front and rear ends of the base, and the light outlet hole is arranged on the front end plate, For laser emission. 3 . The laser according to claim 2 , wherein the liquid inlet cavity comprises a first liquid inlet port and a first liquid outlet port, and the first liquid inlet port is arranged on the bottom surface of the bottom plate of the base. 4 . , for the cooling liquid to enter, the first liquid outlet is arranged on the top surface of the base bottom plate, and is used for the cooling system of the cooling liquid flowing into the laser cavity from the liquid inlet cavity; The liquid outlet cavity includes a second liquid inlet port and a second liquid outlet port, the second liquid inlet port is arranged on the top surface of the base bottom plate, and is used for the cooling liquid to flow in and out from the cooling system of the laser cavity. In the liquid cavity, the second liquid outlet is arranged on the bottom surface of the bottom plate of the base, and is used for cooling liquid to flow out after cooling the laser cavity. 4 . The laser according to claim 3 , wherein a first sealing groove is further provided on the base, and the first sealing groove is arranged at the first liquid outlet and the second liquid inlet. 5 . Around the mouth, the first sealing groove is provided with a first sealing ring, and the first sealing ring is matched with the laser cavity to prevent the leakage of cooling liquid; The front end plate and the rear end plate are respectively provided with a second sealing groove, and a second sealing ring is provided on the second sealing groove, and the second sealing ring is respectively connected with the liquid inlet chamber and the outlet. The fluid cavity is matched to prevent the coolant from leaking out. 5 . The laser according to claim 3 , wherein the laser cavity comprises an upper cover and a lower cavity, the lower cavity is integrally formed, the upper cover and the lower cavity are detachably connected, and the lower cavity is detachably connected. 6 . The two ends of the cavity are respectively provided with a first through hole matched with the xenon lamp and a second through hole matched with the laser crystal. The bottom surface of the lower cavity is provided with two cooling ports, two of the cooling ports. It is matched with the first liquid outlet and the second liquid inlet respectively, and is used for liquid inlet and outlet. 6 . The laser according to claim 5 , wherein a ceramic cavity is further provided in the lower cavity, and the xenon lamp and the laser crystal are respectively arranged in the ceramic cavity and pass through the first cavity. 7 . through hole and the second through hole, the laser cavity is also provided with a crystal pressing block, the crystal pressing block is fixed at both ends of the lower cavity, and the crystal pressing block is provided with the laser The third through hole matched with the crystal is used for inserting the laser crystal. 7. The laser according to claim 1, wherein the total reflection mirror assembly comprises a first mounting seat and a total reflection mirror, the first mounting seat comprises an upper layer, a middle layer and a lower layer, and the first mounting seat A reflection through hole is arranged at the center position, the reflection through hole penetrates the upper layer, the middle layer and the lower layer, the upper layer is provided with a reflection mirror slot, and the reflection mirror slot is arranged coaxially with the reflection through hole and a first threaded hole is also provided around the mirror groove for screwing the total reflection mirror fixed in the mirror groove with bolts. 8 . The laser according to claim 7 , wherein the upper layer and the middle layer are fixedly connected by two first connection posts, and the two first connection posts are arranged diagonally, and the The middle layer and the lower layer are fixedly connected by two second connecting columns, the two second connecting columns are arranged diagonally, and the straight line formed by the two first connecting columns is formed with the two second connecting columns lines are perpendicular to each other. 9 . The laser according to claim 8 , wherein two second threaded holes and two third threaded holes are further provided at the edge of the upper layer, and the two second threaded holes penetrate the upper layer. 10 . , the two second threaded holes are arranged diagonally and are perpendicular to the straight line formed by the two first connecting columns, the two third threaded holes penetrate through the upper layer and the middle layer, and the two The third threaded holes are arranged diagonally, and are perpendicular to the straight line formed by the two second connecting columns. 10 . The laser according to claim 9 , wherein the half-mirror assembly comprises a second mount and a half-mirror, the second mount is the same as the first mount, and the half-mirror is the same as the first mount. 11 . The mirror is fixed on the second mounting seat by means of bolts.

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