CN217984045U

CN217984045U - Double-waveband laser beam power absorption device

Info

Publication number: CN217984045U
Application number: CN202222223913.2U
Authority: CN
Inventors: 陈剑; 俞胜武; 高强; 戴丹蕾
Original assignee: Wuxi Zhuohai Technology Co ltd
Current assignee: Wuxi Zhuohai Technology Co ltd
Priority date: 2022-08-23
Filing date: 2022-08-23
Publication date: 2022-12-06
Anticipated expiration: 2032-08-23

Abstract

The application discloses dual-waveband laser beam power absorbing device, this dual-waveband laser beam power absorbing device includes: a laser absorber having two absorption cavities and a laser passage between the two absorption cavities; the laser passage penetrates through the laser absorber, one end, facing the laser emitter, of the absorption cavity is provided with an absorption inlet, and the other end of the absorption cavity is of a closed structure. This application has realized making beam power absorbing device can absorb the light beam of two kinds of types simultaneously, improves the technological effect who uses the flexibility, and then has solved the beam power absorbing device among the correlation technique and can only absorb single light beam, can't handle the problem of two kinds of useless light.

Description

Double-waveband laser beam power absorption device

Technical Field

The application relates to the technical field of laser equipment, in particular to a dual-waveband laser beam power absorption device.

Background

In practical application, the angular frequency doubling laser can emit a part of useless light beam besides the required laser, and the traditional laser cannot process the part of useless light beam. For example, an infrared laser beam emitted by a laser has three beams of laser with different wavelengths after conversion of angular double-frequency and triple-frequency, wherein the infrared light and the green light are unnecessary waste light, if absorption processing is not performed, the high-power waste light carried by the laser will hit a cavity wall or other optical components, so that the optical components are damaged and polluted, and micro dust is generated with a high probability, which is not allowed in a dust-free laser cavity. The existing light beam power absorption devices can only absorb a single light beam and cannot process two kinds of useless light.

SUMMERY OF THE UTILITY MODEL

The present application provides a dual-band laser beam power absorption apparatus to solve the problem that the beam power absorption apparatus in the related art can only absorb a single beam and cannot process two kinds of waste light.

In order to achieve the above object, the present application provides a dual band laser beam power absorption apparatus, including: a laser absorber having two absorption cavities and a laser passage between the two absorption cavities;

the laser path penetrates through the laser absorber, one end, facing the laser emitter, of the absorption cavity is provided with an absorption inlet, and the other end of the absorption cavity is of a closed structure.

Further, a concave lens is arranged in the absorption inlet.

Furthermore, a groove is formed in the absorption inlet, and the concave lens is embedded in the groove.

Furthermore, a first sealing ring is arranged in the groove, the outer side of the first sealing ring is tightly attached to the inner wall of the groove, and one end, facing the inner side of the absorption cavity, of the concave lens is attached to the first sealing ring.

Furthermore, a second sealing ring is further arranged in the groove, the outer side of the second sealing ring is tightly attached to the inner wall of the groove, and one end, facing the outer side of the absorption cavity, of the concave lens is attached to the second sealing ring.

The laser absorber further comprises a sealing rubber ring, the sealing rubber ring is fixedly arranged on the laser absorber, and the edge of the inner ring of the sealing rubber ring is abutted to the outer end face of the second sealing ring.

Furthermore, a plurality of mounting holes are formed in the sealing gasket along the circumferential direction of the sealing gasket, and the sealing gasket is fixedly connected with the laser absorber through the mounting holes.

Furthermore, the laser absorber is made of a heat conducting material; the lower end of the laser absorber is provided with a heat conducting sheet.

Furthermore, one end of the laser absorber, which is far away from the concave lens, is provided with a grid-shaped groove body structure.

Furthermore, a water-cooling flow channel is arranged in the laser absorber, and a water inlet and a water outlet which are communicated with the water-cooling flow channel are formed in the laser absorber.

In the embodiment of the application, by arranging the laser absorber, the laser absorber is provided with two absorption cavities and a laser passage between the two absorption cavities; the laser path penetrates through the laser absorber, an absorption inlet is formed in one end, facing the laser emitter, of the absorption cavity, the other end of the absorption cavity is of a closed structure, the purpose that the absorption cavities on the two sides of the laser absorber respectively absorb two kinds of useless light beams and the light beams needing to be used are emitted through the laser path is achieved, and therefore the technical effect that the light beam power absorption device can absorb the light beams of two types at the same time, the use flexibility is improved, and the problem that the light beam power absorption device in the related technology can only absorb a single light beam and cannot process two kinds of useless light is solved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, serve to provide a further understanding of the application and to enable other features, objects, and advantages of the application to be more apparent. The drawings and their description illustrate the embodiments of the invention and do not limit it. In the drawings:

FIG. 1 is a schematic structural diagram according to an embodiment of the present application;

FIG. 2 is a cross-sectional structural schematic diagram according to an embodiment of the present application;

FIG. 3 is a rear view schematic diagram according to an embodiment of the present application;

the laser absorption device comprises a laser absorption body 1, a water inlet 2, a water outlet 3, a concave lens 4, a sealing rubber ring 5, a laser passage 6, an absorption cavity 7, a groove 8, a second sealing ring 9, a first sealing ring 10, an absorption inlet 11 and a latticed groove body structure 12.

Detailed Description

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only partial embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the application described herein may be used.

In this application, the terms "upper", "lower", "inside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the present application and its embodiments, and are not used to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation.

Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meaning of these terms in this application will be understood by those of ordinary skill in the art as the case may be.

Furthermore, the terms "disposed," "provided," "connected," "secured," and the like are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In addition, the term "plurality" shall mean two as well as more than two.

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present application will be described in detail below with reference to the embodiments with reference to the attached drawings.

Infrared laser beams emitted by the laser have three beams of laser with different wavelengths after conversion of angular double frequency and triple frequency, wherein the infrared light and the green light are unnecessary waste light, if absorption treatment is not carried out, the waste light carrying high power can hit the cavity wall or other optical components to cause damage and pollution of the optical components, and micro dust can be generated with high probability, which is not allowed in the cavity of the dust-free laser. The existing light beam power absorption devices can only absorb a single light beam and cannot process two kinds of useless light.

To solve the above technical problem, as shown in fig. 1 to 3, an embodiment of the present invention provides a dual-band laser beam power absorption apparatus, including: a laser absorber 1, the laser absorber 1 having two absorption cavities 7, and a laser passage 6 between the two absorption cavities 7;

the laser passage 6 penetrates through the laser absorber 1, one end of the absorption cavity 7 facing the laser emitter is provided with an absorption inlet 11, and the other end is provided with a closed structure.

In the present embodiment, the main structure of the laser beam power absorption device is a laser absorber 1, and the laser absorber 1 may have a cylindrical shape, such as a cylinder or a rectangular parallelepiped structure. Two absorption cavities 7 are formed in the laser absorber 1, the two absorption cavities 7 are located on the left side and the right side of the laser absorber 1, an absorption inlet 11 is formed in the position, opposite to the absorption cavity 7, of the laser absorber 1, the absorption inlet 11 is communicated with the absorption cavity 7, one end, far away from the absorption inlet 11, of the absorption cavity 7 is of a closed structure, namely, a light beam can be absorbed by the inner wall of the absorption cavity 7 after entering the absorption cavity 7 from the absorption inlet 11, and cannot pass through the absorption cavity 7. Specifically, the light beam enters the absorption cavity 7 from the absorption inlet 11 and irradiates the inner surface of the absorption cavity 7, most of the light beam is directly absorbed by the laser absorber 1, and the rest of the light beam is finally absorbed by the laser absorber 1 after multiple reflections at the inner surface of the absorption cavity 7.

Since one of the light beams emitted by the laser generator needs to be used, the laser absorber 1 in this embodiment is further provided with a laser path 6, and the laser path 6 is located between the two absorption cavities 7. The main beam of the laser to be used passes through the laser path 6, so that the laser absorber 1 in the present application can absorb the waste light while the original beam performance is not affected. The structure of the laser passage 6 can be designed according to the requirement, and can be set to be a circular hole structure or a square hole structure.

The dual-waveband laser beam power absorption device in the embodiment can absorb useless laser of two wavebands in a laser cavity, such as infrared light and green light generated after triple frequency, so that cleanness in the cavity is guaranteed, and optical components are protected from being damaged and polluted.

As shown in fig. 2, in order to improve the absorption efficiency of the laser absorber 1 for the light beam, the concave lens 4 is provided in the absorption entrance 11 in the present embodiment. The unwanted beam is dispersed by the concave lens 4 and impinges on the laser absorber 1 for example, where it is better absorbed in the absorption cavity 7. The concave lens 4 is selected to be compatible with the unwanted light beam, and the lens selected is selected to be transparent to the unwanted light incident on the absorption cavity 7. In order to facilitate the installation of the concave lens 4, a groove 8 is formed in the absorption inlet 11, and the concave lens 4 is embedded in the groove 8.

As shown in fig. 2, in order to improve the sealing performance of the groove 8 after the concave lens 4 is mounted, a first sealing ring 10 is disposed in the groove 8 in this embodiment, the outer side of the first sealing ring 10 is closely attached to the inner wall of the groove 8, and one end of the concave lens 4 facing the inner side of the absorption cavity 7 is attached to the first sealing ring 10. Further, a second sealing ring 9 is further arranged in the groove 8, the outer side of the second sealing ring 9 is tightly attached to the inner wall of the groove 8, and one end, facing the outer side of the absorption cavity 7, of the concave lens 4 is attached to the second sealing ring 9. The gap between the concave lens 4 and the groove 8 can be sealed by the first sealing ring 10 and the second sealing ring 9.

As shown in fig. 1 and fig. 2, in order to further prevent the impurities in the absorption cavity 7 from overflowing, the present embodiment further includes a seal rubber ring 5, the seal rubber ring 5 is fixedly disposed on the laser absorber 1, and an inner ring edge of the seal rubber ring 5 abuts against an outer end surface of the second seal ring 9. In order to facilitate the connection of the seal rubber ring 5 and the laser absorber 1, a plurality of mounting holes are formed in the seal rubber ring 5 along the circumferential direction of the seal rubber ring, and the seal rubber ring is fixedly connected with the laser absorber 1 through the mounting holes.

Because the laser absorber 1 can generate heat after absorbing the waste beam, the temperature of the laser absorber 1 is prevented from being too high, and in the embodiment, the laser absorber 1 is made of a heat conducting material, and after absorbing the laser beam, the light energy is converted into heat energy and dissipated. The laser absorber 1 can dissipate heat by an external cooling device, for example, by water cooling or air cooling. In order to improve the heat dissipation performance of the laser absorber 1, in the present embodiment, the lower end of the laser absorber 1 is provided with a heat conduction sheet, and the heat dissipation of the laser absorber 1 can be accelerated by the heat conduction sheet, so as to prevent the temperature of the laser absorber 1 from being too high.

As shown in fig. 3, in order to further increase the heat dissipation area of the laser absorber 1, a grid-shaped groove structure 12 is provided on the surface of the laser absorber 1 in the present embodiment, for example, a grid-shaped groove structure 12 may be provided at the end far from the concave lens 4,

as shown in fig. 1, in order to further enhance the heat dissipation capability of the laser absorber 1, in this embodiment, a water-cooling channel is disposed in the laser absorber 1, and the laser absorber 1 is provided with a water inlet 2 and a water outlet 3 which are communicated with the water-cooling channel. When the absorption waste light power is too high, the water cooling channel can be opened when the temperature of the laser absorber 1 is too high, the heat is quickly taken away by a water circulation cooling mode, and the temperature in the laser is not too high. The arrangement of the water-cooling channels can be designed according to requirements, for example, S-shaped water-cooling channels can be arranged around the two absorption chambers 7.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A dual-band laser beam power absorption apparatus, comprising: a laser absorber having two absorption cavities and a laser passage between the two absorption cavities;

the laser passage penetrates through the laser absorber, one end, facing the laser emitter, of the absorption cavity is provided with an absorption inlet, and the other end of the absorption cavity is of a closed structure.

2. The dual band laser beam power absorbing apparatus of claim 1 wherein a concave lens is disposed within the absorbing inlet.

3. The dual band laser beam power absorbing apparatus of claim 2, wherein a groove is formed in the absorbing inlet, and the concave lens is embedded in the groove.

4. The dual band laser beam power absorber of claim 3 wherein a first seal ring is disposed in said groove, an outer side of said first seal ring is in close contact with an inner wall of said groove, and an end of said concave lens facing an inner side of said absorption cavity is in contact with said first seal ring.

5. The dual band laser beam power absorber of claim 4 wherein a second seal ring is disposed in said groove, the outer side of said second seal ring is closely attached to the inner wall of said groove, and the end of said concave lens facing the outer side of said absorption cavity is attached to said second seal ring.

6. The dual-band laser beam power absorption device as claimed in claim 5, further comprising a sealing rubber ring, wherein the sealing rubber ring is fixedly disposed on the laser absorber, and an inner ring edge of the sealing rubber ring abuts against an outer end surface of the second sealing ring.

7. The dual-band laser beam power absorption device as claimed in claim 6, wherein the sealing rubber ring has a plurality of mounting holes formed along a circumferential direction thereof, and is fixedly connected to the laser absorber through the mounting holes.

8. The dual band laser beam power absorption apparatus of any one of claims 1 to 7 wherein the laser absorber is made of a thermally conductive material; the lower end of the laser absorber is provided with a heat conducting sheet.

9. The dual band laser beam power absorption device of claim 8 wherein the surface of the laser absorber is configured as a grid-like trough structure.

10. The dual band laser beam power absorber of claim 9 wherein a water-cooled channel is provided in said laser absorber, said laser absorber having a water inlet and a water outlet in communication with said water-cooled channel.