Four-path solid holmium laser system

Abstract

A four-path solid holmium laser system, comprising: a laser (100), suitable for outputting four laser beams; a first reflector assembly (200), comprising four first reflectors (210), each first reflector (210) being aligned with one laser beam, and each first reflector (210) being angularly configured to reflect a corresponding incident laser beam and then enable same to pass through an optical axis of the four-path solid holmium laser system at a first position; and a second reflector assembly (300), provided between the laser (100) and the first reflector assembly (200) and located at the first position, the second reflector assembly (200) comprising four second reflectors (310) facing the four first reflector (210) and capable of translating, each second reflector (310) being capable of translating to the optical axis, and each second reflector (310) being angularly configured to be suitable for reflecting the laser beam reflected by the corresponding first reflector (210) along the optical axis.

Description

Four-channel solid-state holmium laser system Technical Field

[0001] The present disclosure generally relates to the field of laser devices, and more particularly to a four-channel solid-state holmium laser system. Background Art

[0002] Laser therapy machines based on laser devices have been widely used in medical surgery due to their advantages of being non-invasive or minimally invasive. Taking solid holmium lasers as an example, they are usually single-channel lasers or dual-channel lasers. Each laser emits pulses for laser treatment. In particular, when laser lithotripsy is used, the higher the pulse frequency and the higher the power, the better the surgical effect and efficiency. When a single-channel laser is damaged, the surgery will be interrupted or terminated. When a laser system with two or more channels works periodically in turn, there is a time interval between each laser emission. When two laser channels are damaged, the loss of the other laser is aggravated, making it difficult for laser surgery to meet the complex actual clinical application requirements in terms of pulse frequency and power. Some multi-channel laser devices in the existing technology require complex structures, resulting in poor reliability and difficulty in debugging and maintenance.

[0003] Summary of the Invention

[0004] The present disclosure aims to provide a four-channel solid-state holmium laser system with higher pulse frequency and power.

[0005] To solve the above technical problems, the present disclosure provides a four-path solid-state holmium laser system, comprising: a laser configured to output four laser beams; a first reflector assembly, comprising four first reflectors, each first reflector being respectively aligned with a corresponding one of the four laser beams, and the angle of each first reflector relative to the corresponding laser beam being configured to reflect the corresponding laser beam through the optical axis of the four-path solid-state holmium laser system at a first position; and a second reflector assembly, arranged between the laser and the first reflector assembly and located at a first position, the second reflector assembly comprising four second reflectors respectively arranged opposite to the four first reflectors and being movably movable, each second reflector being capable of movably moving to the optical axis, and the angle of each second reflector relative to the laser beam reflected by the corresponding first reflector being configured to be suitable for reflecting the laser beam reflected by the corresponding first reflector along the optical axis.

[0006] In some embodiments of the present disclosure, the four-channel solid-state holmium laser system further includes a controller configured to control the laser to selectively output one laser beam and control the second reflector assembly to translate the corresponding second reflector to the optical axis.

[0007] In some embodiments of the present disclosure, a laser includes a resonant cavity and an excitation source located in the resonant cavity, and the resonant cavity includes a four-way total reflection mirror assembly and a four-way output mirror assembly that are relatively arranged.

[0008] In some embodiments of the present disclosure, the first reflector assembly also includes a bracket, four wedge plates and four bases, the four wedge plates are arranged on the bracket and have inclined surfaces facing the second reflector assembly, the four bases are respectively arranged on the inclined surfaces of the four wedge plates, and the four first reflectors are respectively set on the four bases.

[0009] In some embodiments of the present disclosure, the first reflector assembly has a first through hole located on the optical axis to allow the laser beam reflected by each second reflector to pass through.

[0010] In some embodiments of the present disclosure, the second reflector assembly has four second through holes for the laser beam to pass through.

[0011] In some embodiments of the present disclosure, each second reflector is parallel to the corresponding first reflector.

[0012] In some embodiments of the present disclosure, the second reflector assembly also includes a first carrier, a first translation drive mechanism, a second carrier and a second translation drive mechanism, the four second reflectors are arranged on the first carrier, the first translation drive mechanism is configured to move the first carrier along a first direction, the first carrier is arranged on the second carrier, the second translation drive mechanism is configured to move the first carrier along a second direction, and the first direction and the second direction intersect.

[0013] In some embodiments of the present disclosure, the four-channel solid-state holmium laser system further includes: a coupling lens, disposed on the back side of the first reflector assembly opposite to the light-emitting side, and located on the optical axis to receive the laser beam reflected by each second reflector; and an output optical fiber, connected to the light-emitting side of the coupling lens.

[0014] In some embodiments of the present disclosure, four laser beams define four vertices of a square, four first reflecting mirrors define four vertices of another square, and four second reflecting mirrors define four vertices of another square. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are included to provide a further understanding of the present application, and are incorporated into and constitute a part of this application. The accompanying drawings illustrate embodiments of the present application and, together with this specification, serve to explain the principles of the present disclosure. In the accompanying drawings:

[0016] FIG1 is a schematic diagram of a four-path solid-state holmium laser system and its optical path A according to some embodiments of the present application.

[0017] FIG2 is a schematic diagram of a laser according to some embodiments of the present application.

[0018] 3A-3C are schematic diagrams of a first reflector assembly according to some embodiments of the present application.

[0019] FIG4 is a schematic diagram of a second reflector assembly according to some embodiments of the present application.

[0020] FIG5 is a schematic diagram of an optical path B of a four-path solid-state holmium laser system according to some embodiments of the present application.

[0021] FIG6 is a schematic diagram of an optical path C of a four-path solid-state holmium laser system according to some embodiments of the present application.

[0022] FIG7 is a schematic diagram of an optical path D of a four-path solid-state holmium laser system according to some embodiments of the present application. DETAILED DESCRIPTION

[0023] To more clearly illustrate the technical solutions of the embodiments of this application, the following is a brief introduction to the drawings required for describing the embodiments. Obviously, the drawings described below are merely examples or embodiments of this application. Those skilled in the art can apply this application to other similar scenarios based on these drawings without inventive effort. Unless otherwise apparent from the context or otherwise noted, the same reference numerals in the figures represent the same structure or operation.

[0024] As used in this application and the claims, unless the context clearly indicates otherwise, the words "a," "an," "an," and / or "the" are not intended to refer to the singular but may include the plural. Generally speaking, the terms "comprises" and "include" only indicate the inclusion of the steps and elements specifically identified, and these steps and elements do not constitute an exclusive list. A method or apparatus may also include other steps or elements.

[0025] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values ​​should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0026] In the description of this application, it should be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of this application; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0027] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0028] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is solely for the purpose of distinguishing the corresponding components. Unless otherwise stated, these terms have no special meaning and therefore should not be construed as limiting the scope of protection of this application. Furthermore, while the terms used in this application are selected from commonly known and commonly used terms, some terms mentioned in this specification may have been selected by the applicant at his or her discretion, and their detailed meanings are explained in the relevant sections of this description. Furthermore, this application should be understood not only by the actual terms used, but also by the meaning implied by each term.

[0029] FIG1 is a schematic diagram of an optical path A of a four-channel solid-state holmium laser system according to some embodiments of the present application. The four-channel solid-state holmium laser system 10 according to the present disclosure includes a laser 100, a first reflector assembly 200, and a second reflector assembly 300, wherein the second reflector assembly 300 is located between the laser 100 and the first reflector assembly 200.

[0030] FIG2 is a schematic diagram of an excitation source according to some embodiments of the present application. The laser 100 in this embodiment includes a four-way total reflection mirror assembly 111, a four-way output mirror assembly 112, and an excitation source 120. The four-way total reflection mirror assembly 111 and the four-way output mirror assembly 112 are positioned relative to each other to form a resonant cavity 110. The excitation source 120 is located within the resonant cavity 110, i.e., between the four-way total reflection mirror assembly 111 and the four-way output mirror assembly 112.

[0031] Specifically, the excitation source 120 has four light output parts 130, which are suitable for outputting four laser beams. For the convenience of description, they are named as A-path light output part 130a, B-path light output part 130b, C-path light output part 130c and D-path light output part 130d respectively, and each light output part 130 has a xenon lamp 131 and a crystal 132, wherein the xenon lamp 131 is suitable for emitting energy to excite the crystal 132 to generate laser, which oscillates between the resonant cavity 110 and is finally output through different optical paths.

[0032] Figures 3A and 3B are perspective views of the first reflector assembly of some embodiments of the present application from different perspectives, and Figure 3B is an exploded perspective view of the first reflector assembly of some embodiments of the present application. Referring to Figures 3A-3C , the first reflector assembly 200 includes four first reflectors 210, designated for ease of description as A-path first reflector 210a, B-path first reflector 210b, C-path first reflector 210c, and D-path first reflector 210d. The first reflector assembly 200 also includes a bracket 201, four wedge-shaped plates 202, and four bases 203. The bracket 201 can be mounted vertically and has a storage space. The four wedge-shaped plates 202 are mounted at the four corners of the storage space of the bracket 201 and provide inclined surfaces facing the second reflector assembly, with the inclined surfaces slightly tilted toward the center of the bracket 201. The four bases 203 are mounted on the inclined surfaces of the four wedge-shaped plates 202. The four first reflectors 210 are mounted on the four bases 203 and, due to the inclined surfaces, slightly tilted toward the center of the bracket 201.

[0033] Furthermore, in this embodiment, the first reflector assembly 200 is fixed. Specifically, the position of the first reflector assembly 200 in the four-way solid-state holmium laser system 10 is fixed, and the position of each first reflector 210 in the first reflector assembly 200 is also fixed during the operation of the laser system. However, when the laser system is not working, the angle of each first reflector 210 can be fine-tuned to more accurately reflect the laser beam to ensure that each laser beam is coupled to the optical fiber core. Specifically, each first reflector 210 includes a mirror base 211 and a lens 212. Two screws 213 are provided on the corners of the mirror base 211, and each lens 212 is mounted on the corresponding mirror base 211 by these screws 213. By adjusting the screws 213 on the corners to change the distance between the mirror base 211 and the lens 212, the angle of each first reflector 210 relative to the base 203 can be fine-tuned. It can be understood that the larger the angle of the first reflector 210 relative to the base 203, the shorter the optical path to the second reflector assembly 300. Similarly, the smaller the angle of the first reflector 210 relative to the base 203, the longer the optical path of the laser reflected by it to the second reflector assembly 300, thereby improving the scope of application of the present application.

[0034] FIG4 is a schematic diagram of a second reflector assembly according to some embodiments of the present application. Referring to FIG4 , corresponding to the first reflector assembly 200, the second reflector assembly 300 includes four second reflectors 310, namely, the A-path second reflector 310a, the B-path second reflector 310b, the C-path second reflector 310c, and the D-path second reflector 310d. The second reflector assembly 300 also includes a first stage 301, a first translation drive mechanism 302, a second stage 303, and a second translation drive mechanism 304. The four second reflectors 310 are arranged on the first stage 301, and the first translation drive mechanism 302 is capable of driving the four second reflectors 310 to move along the first direction X on the first stage 301, so that the reflector units (A-path second reflector 310a, B-path second reflector 310b, C-path second reflector 310c, and D-path second reflector 310d) in the four second reflectors 310 are translated to the center of the optical axis along the X-axis direction to ensure that each optical path operates normally. The first stage 301 is mounted on the second stage 303, and the second translation drive mechanism 304 is capable of driving the first stage 301 to move on the second stage 303 along the second direction Y. When the Y motor is activated, the X-axis motor of the reflector assembly moves as a whole along the Y axis, causing the reflector assembly to translate along the Y direction to the center of the optical axis, thereby ensuring the normal operation of each optical path. Here, the first direction X and the second direction Y intersect and are preferably perpendicular. As shown in Figure 1, both the first direction X and the second direction Y are inclined at 45° relative to the horizontal plane.

[0035] In this embodiment, the translation drive mechanisms 302 and 304 include linear motors. In other embodiments of the present application, the translation drive mechanisms 302 and 304 use motors and screw rods that cooperate therewith, which is not specifically limited in the present application.

[0036] Figures 1-4 illustrate a preferred embodiment of the present application. In this embodiment, the four laser beams are arranged in a square. Correspondingly, the four light-emitting portions 130, the first reflector 210, and the second reflector 310 are all arranged in a square. In other words, the four laser beams, the four light-emitting portions 130, the first reflector 210, and the second reflector 310 each define the four vertices of a square.

[0037] Furthermore, the laser beam output by the excitation source 120 is adapted to pass through the optical axis of the four-way solid-state holmium laser system 10 at a first position after being reflected by the first reflector assembly 200, and then be output along the optical axis after being reflected by the second reflector assembly 300 located at the first position. In the embodiment shown in Figures 1-4, the four-way solid-state holmium laser system further includes a coupling lens 400 and an output optical fiber 500, wherein the coupling lens 400 is disposed on a side of the first reflector assembly 200 relative to the second reflector assembly 300, i.e., the back side opposite to the light-emitting side, and the coupling lens 400 is located on the optical axis to receive the laser beam reflected by each second reflector 310, ultimately coupling it into the output optical fiber 500 and outputting it through the output optical fiber 500. It will be understood that the term "optical axis" is defined by the laser beam output by the output optical fiber 500, which coincides with the output optical fiber 500. It should be understood that the optical axis is not a physical structure, but merely a spatial concept to indicate the direction of the output laser beam.

[0038] As used herein, the term "light-emitting side" refers to the side where components such as lasers, excitation sources, and reflectors emit or reflect outgoing light, that is, the downstream side of the optical path.

[0039] For ease of understanding, the optical path A of the four-path solid-state holmium laser system 10 is described in detail with reference to FIG1-4 as follows:

[0040] When the A-path light emitting portion 130 a in the excitation source 120 is working, that is, when the A-path xenon lamp 131 a emits energy, the laser beam output by the laser 100 will be output via the optical path A.

[0041] The angle of the A-path first reflector 210a in the first reflector assembly 200 is configured to reflect the laser beam output by the A-path light output portion 130a to the intersection of the first position and the optical axis, that is, the intersection of the plane where the second reflector assembly 300 is located and the straight line where the output optical fiber 500 is located.

[0042] At this point, the second reflector assembly 300 is translated in the X and Y directions via the first translation drive mechanism 302 and the second translation drive mechanism 304, positioning the second reflector 310a of channel A at the optical axis, thereby receiving and re-reflecting the laser beam reflected by the first reflector 210a of channel A. It should be noted that the second reflector 310a of channel A is parallel to the first reflector 210a of channel A. Therefore, the optical path of the laser beam reflected by the second reflector 310a of channel A is parallel to the output optical path of the light output portion 130a of channel A, i.e., it is output along the optical axis.

[0043] In this embodiment, in order to prevent the laser beams of different optical paths from being blocked, the first reflector assembly 200 is provided with a first through hole 220 at the optical axis position. After two reflections, the laser beam passes through the first through hole 220 and then through the coupling lens 400 and is finally output through the output optical fiber 500.

[0044] Furthermore, in order to prevent laser beams of different optical paths from being blocked, a plurality of second through holes 330 are also provided on the second reflector assembly 300 for the laser beams to pass through.

[0045] Furthermore, the four-way solid-state holmium laser system 10 provided by the present disclosure also has a controller configured to control the laser 100 to selectively output a laser beam, and control the translation drive mechanism to drive each second reflector 310 to translate together so that the corresponding second reflector 310 is aligned with the optical axis. In one embodiment, the controller periodically controls the laser 100 to output laser beams in turn in the order of ABCD. It is understandable that the angle of each first reflector 210a, 210b, 210c and 210d in the first reflector assembly 200 is configured to reflect the corresponding incident laser beam and pass through the optical axis of the four-way solid-state holmium laser system at the first position, so there is no need to move it, and each second reflector 310a, 310b, 310c and 310d is parallel to the corresponding first reflector 210a, 210b, 210c and 210d, respectively, so that reflection can be completed by only translation.

[0046] FIG5 is a schematic diagram of optical path B of a four-path solid-state holmium laser system according to some embodiments of the present application. Referring to FIG1-5 , when the controller controls the B-path light output portion 130b in the laser 100 to operate, the laser beam output by the laser 100 is output via optical path B. At this time, the controller synchronously controls the second reflector assembly 300 to translate under the drive of the translation drive mechanisms 302 and 304, causing the corresponding B-path second reflector 310b to move to the optical axis (the second reflector assembly 300 is provided with a second through hole 330 in the optical path of the laser beam output by the B-path light output portion 130b). The B-path second reflector 310b receives the laser beam reflected by the B-path first reflector 210b (not shown in FIG5 due to angle reasons, refer to FIG3 ) and reflects it again. After two reflections, the laser beam is output along the optical axis and ultimately enters the output optical fiber 500 (not shown in FIG5 , refer to FIG1 ).

[0047] FIG6 is a schematic diagram of optical path C of a four-path solid-state holmium laser system according to some embodiments of the present application. Referring to FIG1-4 and FIG6 , when the controller controls the C-path light output portion 130c in the laser 100 to operate, the laser beam output by the laser 100 is output via optical path C. The controller synchronously controls the translation drive mechanisms 302 and 304 to drive the entire translation of each second reflector 310, thereby moving the corresponding C-path second reflector 310c to the optical axis (at this time, the second reflector assembly 300 is provided with a second through hole 330 in the optical path of the laser beam output by the C-path light output portion 130c). The C-path second reflector 310c receives the laser beam reflected by the C-path first reflector 210c (not shown in FIG6 due to angle reasons, refer to FIG3 ) and reflects it again. After two reflections, the laser beam is output along the optical axis and ultimately enters the output optical fiber 500 (not shown in FIG6 , refer to FIG1 ).

[0048] FIG7 is a schematic diagram of optical path D of a four-path solid-state holmium laser system according to some embodiments of the present application. Referring to FIG1-4 and FIG7 , when the controller controls the D-path light output portion 130d in the laser 100 to operate, the laser beam output by the laser 100 is output via optical path D. The controller synchronously controls the translation drive mechanisms 302 and 304 to drive the entire translation of each second reflector 310, thereby moving the corresponding D-path second reflector 310d to the optical axis. The D-path second reflector 310d receives the laser beam reflected by the D-path first reflector 210d and reflects it again. After two reflections, the laser beam is output along the optical axis and ultimately enters the output optical fiber 500.

[0049] The four-channel solid-state holmium laser system 10 provided herein can control the four lasers to operate periodically in rotation, reducing the blank time when the laser beam is not output, significantly improving the frequency and power of the laser treatment process. Furthermore, even if one optical path fails, the other optical paths can take over, ensuring a certain degree of reliability. Furthermore, the four-channel solid-state holmium laser system 10 only requires the addition of a first reflective assembly 200 and a second reflective assembly 300, resulting in a simple overall structure and easy commissioning and maintenance.

[0050] The basic concepts have been described above. It will be apparent to those skilled in the art that the above disclosures are merely illustrative and do not constitute limitations on this application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to this application. Such modifications, improvements, and amendments are suggested in this application and remain within the spirit and scope of the exemplary embodiments of this application.

[0051] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "some embodiments," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "some embodiments" or "one embodiment" or "an alternative embodiment" mentioned twice or multiple times in different places in this specification do not necessarily refer to the same embodiments. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0052] Similarly, it should be noted that, in order to simplify the presentation of this application and thus facilitate understanding of one or more embodiments of the invention, the foregoing descriptions of the embodiments of this application sometimes combine multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, an embodiment may have fewer features than all of the features of a single embodiment disclosed above.

[0053] In some embodiments, numbers are used to describe the quantity of components and attributes. It should be understood that such numbers used in the description of the embodiments are modified by the modifiers "about", "approximately" or "substantially" in some examples. Unless otherwise stated, "about", "approximately" or "substantially" indicate that the numbers are allowed to vary by ±20%. Accordingly, in some embodiments, the numerical parameters used in the description and claims are approximate values, which may change according to the required features of individual embodiments. In some embodiments, the numerical parameters should take into account the specified significant digits and adopt the general method of retaining digits. Although the numerical domains and parameters used to confirm the breadth of their range in some embodiments of the present application are approximate values, in specific embodiments, the settings of such numerical values ​​are as accurate as possible within the feasible range.

[0054] Although the present application has been described with reference to the current specific embodiments, ordinary technicians in this technical field should recognize that the above embodiments are only used to illustrate the present application, and various equivalent changes or substitutions can be made without departing from the spirit of the present application. Therefore, as long as the changes and modifications to the above embodiments are within the scope of the essential spirit of the present application, they will fall within the scope of the claims of the present application.

Claims

1. A four-channel solid holmium laser system, comprising: A laser configured to output four laser beams; A first reflector assembly includes four first reflectors, each of which is respectively aligned with a corresponding laser beam among the four laser beams, and an angle of each first reflector relative to the corresponding laser beam is configured to make the corresponding laser beam pass through the optical axis of the four-way solid holmium laser system at a first position after being reflected; as well as A second reflector assembly is arranged between the laser and the first reflector assembly and is located at the first position, the second reflector assembly includes four second reflectors which are arranged opposite to the four first reflectors and can be translated, each second reflector can be translated to the optical axis, and each second reflector is configured with respect to the angle of the laser beam reflected by the corresponding first reflector to be suitable for reflecting the laser beam reflected by the corresponding first reflector along the optical axis.

2. The four-channel solid-state holmium laser system according to claim 1, characterized in that: The invention also includes a controller configured to control the laser to selectively output a laser beam, and control the second reflector assembly to translate the corresponding second reflector to the optical axis.

3. The four-channel solid-state holmium laser system according to claim 1 or 2, characterized in that: The laser comprises a resonant cavity and an excitation source located in the resonant cavity, and the resonant cavity comprises four-way total reflection mirror components and four-way output mirror components which are arranged opposite to each other.

4. The four-channel solid-state holmium laser system according to any one of claims 1 to 3, characterized in that: The first reflector assembly also includes a bracket, four wedge plates and four bases, the four wedge plates are arranged on the bracket and have inclined surfaces facing the second reflector assembly, the four bases are respectively arranged on the inclined surfaces of the four wedge plates, and the four first reflectors are respectively arranged on the four bases.

5. The four-channel solid-state holmium laser system according to any one of claims 1 to 4, characterized in that: The first reflector assembly has a first through hole located on the optical axis to allow the laser beam reflected by each second reflector to pass through.

6. The four-channel solid-state holmium laser system according to any one of claims 1 to 5, characterized in that: The second reflector assembly has a plurality of second through holes for the laser beam to pass through.

7. The four-channel solid-state holmium laser system according to any one of claims 1 to 6, characterized in that: Each second reflector is arranged in parallel with the corresponding first reflector.

8. The four-channel solid-state holmium laser system according to any one of claims 1 to 7, characterized in that: The second reflector assembly also includes a first carrier, a first translation drive mechanism, a second carrier and a second translation drive mechanism. The four second reflectors are arranged on the first carrier. The first translation drive mechanism is configured to move the first carrier along a first direction. The first carrier is arranged on the second carrier. The second translation drive mechanism is configured to move the first carrier along a second direction. The first direction and the second direction intersect.

9. The four-channel solid-state holmium laser system according to any one of claims 1 to 8, characterized in that: Also includes: A coupling lens, disposed on the back side of the first reflector assembly opposite to the light emitting side and located on the optical axis to receive each laser beam reflected by the second reflector; as well as The output optical fiber is connected to the light output side of the coupling lens.

10. The four-channel solid-state holmium laser system according to any one of claims 1 to 9, characterized in that: The four laser beams define four vertices of a square, the four first reflecting mirrors define four vertices of another square, and the four second reflecting mirrors define four vertices of another square.

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