CN217469090U - A kind of laser based on MOPA structure - Google Patents

Abstract

The utility model discloses the laser technology field provides a laser instrument based on MOPA structure, include: the phase-change refrigeration module comprises a condenser, an evaporation cold plate and a compressor which are sequentially communicated through a cooling pipeline, the condenser and the compressor are fixed at the bottom of the laser, the box body is installed at the top of the condenser, the heat dissipation assembly is installed at the top of the box body, and the evaporation cold plate is installed in the box body and attached to the amplification pump source; through adopting the phase change refrigeration, replaced traditional water-cooling machine, when reducing the laser instrument volume, increased the radiating effect of laser instrument, enlarged the range of application and the scene of laser instrument.

Description

A kind of laser based on MOPA structure

technical field

The utility model relates to the technical field of lasers, in particular to a laser based on a MOPA structure.

Background technique

In fiber lasers, the electro-optical conversion efficiency can reach more than 60%, but the high calorific value of the pump source and the local heating of other core fiber components still bring potential hidden dangers to the safety of the laser, especially with the increase of laser output power. The greater the calorific value of the laser, the thermal management scheme must be adopted in the laser to discharge the heat generated in the laser to ensure the normal operation of the fiber laser. At present, for medium and high power lasers, water cooling is mainly used for heat dissipation. The circulating water in the compressor is cooled by a water pump, and the cooling water is transported to the water cooling plate by a water pump, and the water cooling plate is in contact with the laser heat source to achieve rapid heat dissipation. However, the water cooler is bulky and cannot be moved, which leads to the need for an external water cooler during the application of the laser, which cannot be portable and mobile, which limits the application prospect of the laser.

Therefore, it is an urgent problem to provide a laser with efficient heat dissipation capability, especially for medium and high power lasers.

Utility model content

Based on this, the purpose of the present invention is to provide a laser based on the MOPA structure, so as to solve the problems of large volume and poor heat dissipation effect of the current medium and high power lasers, and to improve the performance and environmental adaptability of the laser.

The utility model provides a laser based on a MOPA structure, comprising: a heat dissipation component, at least one amplification stage pump source encapsulated in a box, and at least one phase-change refrigeration module, wherein the phase-change refrigeration module includes a cooling pipeline The condenser, the evaporative cold plate and the compressor are connected in sequence, the condenser and the compressor are fixed on the bottom of the laser, the box body is mounted on the top of the condenser, and the heat dissipation component is mounted on the box The top of the body, the evaporative cold plate is installed in the box and attached to the pump source of the amplification stage.

Further, the laser also includes a seed light source and an amplification stage optical fiber, the seed light source is used for emitting signal light, the amplification stage pump source is used for emitting pump source light, and the seed light source is connected to the amplification stage fiber. , the output end of the pump source of the amplifier stage is connected to the input end of the amplifier stage fiber.

Further, one side of the box body for encapsulating the pump source of the amplification stage is hingedly mounted with a cover body that rotates with a flip cover, the top of the cover body is mounted with the heat dissipation assembly, and the heat dissipation assembly is away from the cover. A seed light source is installed on one side of the body.

Further, the amplification stage pump source includes a first amplification stage pump source, a first amplification stage optical fiber, a second amplification stage pump source, a second amplification stage optical fiber, a third amplification stage pump source, and a third amplification stage pump source. The seed light source is sequentially connected to the first amplification stage fiber, the second amplification stage fiber, and the third stage amplification fiber, and the output end of the first amplification stage pump source is connected to the first amplification stage fiber. The input end is connected, the output end of the second amplification stage pump source is connected with the input end of the second amplification stage fiber, and the output end of the third amplification stage pump source is connected with the third amplification stage fiber. The input end is connected, and the seed light source, the first amplification stage pump source, the first amplification stage optical fiber, the second amplification stage pump source, and the second amplification stage optical fiber are all installed on a side of the heat dissipation assembly away from the box body. On the side, the pump source of the third amplification stage and the optical fiber of the third amplification stage are packaged in the box.

Further, a first optical fiber coiling groove and a second optical fiber coiling groove are installed on the side of the heat dissipating component away from the cover body, and the first amplification stage optical fiber is wound in the first optical fiber coiling groove, and the first optical fiber coiling groove is installed in the first optical fiber coiling groove. The second-stage optical fiber is wound around the second optical fiber winding groove.

Further, the heat dissipation assembly includes a plurality of heat dissipation fins and a first heat dissipation plate, and the plurality of the heat dissipation fins are arranged at intervals and located between the first heat dissipation plate and the cover body. The heat dissipation plate and the cover cooperate to form a plurality of air passages arranged in parallel, a third optical fiber winding groove is installed in the cover body, and the third optical fiber of the amplification stage is wound in the third optical fiber winding groove.

Further, the heat dissipation assembly includes a plurality of heat dissipation fins, a first heat dissipation plate and a second heat dissipation plate, the cover body is provided with an opening communicating with the inside of the box body, and the second heat dissipation plate is attached to the cover At the top of the body, the heat sink, the first heat sink and the second heat sink cooperate to form a plurality of air passages arranged in parallel. The third amplifier stage optical fiber is wound in the third optical fiber winding groove.

Further, the heat dissipation assembly further includes: a first fan group and a second fan group, the first fan group and the second fan group are respectively arranged on both sides of the ventilation duct; the laser further includes: a first fan group and a second fan group. A driving board and a control board electrically connected to the first driving board are installed on the side of the first heat dissipation board away from the heat sink.

Further, in the phase change refrigeration system, each condenser is equipped with a set of fans, a refrigeration pipe is installed on the evaporative cold plate, and one end of the refrigeration pipe is connected to a cooling pipe of the compressor. The other end of the opposite end is communicated with the cooling pipeline communicated with the condenser.

Further, the laser includes two phase-change refrigeration modules that are independent of each other, and the condensers of the two phase-change refrigeration modules are fixed on the bottom plate of the chassis of the laser, and are respectively close to two opposite sides of the chassis. The compressors of the two phase-change refrigeration modules are fixed on the bottom plate of the chassis, and are arranged on the same side of the condenser and the box used to encapsulate the pump source of the amplification stage, and the two The compressors are arranged below the heat dissipation assembly, and the evaporative cold plates of the two phase-change refrigeration modules are installed side by side in the box, or the evaporative cold plates of the two phase-change refrigeration modules are integrated connected and installed in the box.

Compared to the existing technology:

(1) The present utility model provides a laser based on a MOPA structure, including a heat dissipation assembly, at least one amplification stage pump source encapsulated in a box, and at least one phase-change refrigeration module, wherein the phase-change refrigeration module includes a cooling The condenser, the evaporative cold plate and the compressor are connected in sequence by the pipeline, the condenser and the compressor are fixed on the bottom of the laser, the box is mounted on the top of the condenser, and the heat dissipation component is mounted on the bottom of the laser. On the top of the box body, the evaporative cold plate is installed in the box body and is attached to the amplification stage pump source, which replaces the traditional water cooler, reduces the volume of the laser, and expands the application range of the laser. prospect.

(2) The pump source of the third amplification stage and the optical fiber of the third amplification stage are packaged in the box, which can prevent them from being polluted by dust and ensure the normal use performance of the laser.

(3) The amplification stage pump source includes the first amplification stage pump source, the first amplification stage fiber, the second amplification stage pump source, the second amplification stage fiber, the third amplification stage pump source and the third amplification stage A first optical fiber coiling groove and a second optical fiber coiling groove are installed on the side of the heat dissipating component away from the cover body, the first amplifying optical fiber is wound in the first optical fiber coiling groove, and the first optical fiber coiling groove is The second amplification stage optical fiber is wound in the second optical fiber coiling groove, the cover is provided with a third optical fiber coiling groove, and the third amplification stage optical fiber is wound in the third optical fiber coiling groove. The amplification stage fiber, the second amplification stage fiber, and the third amplification stage fiber are arranged separately, which is beneficial to reduce the volume of the laser while ensuring the quality of the output beam of the laser.

(4) The laser includes two phase-change refrigeration modules that are independent of each other, and the condensers of the two phase-change refrigeration modules are fixed on the bottom plate of the chassis of the laser, and are respectively close to two opposite sides of the chassis. side plates; the compressors of the two phase-change refrigeration systems are fixed on the bottom plate of the chassis, and are arranged on the same side of the condenser and the box used to encapsulate the pump source of the amplification stage, and The two compressors are arranged below the heat dissipation assembly, and the evaporative cold plates of the two phase-change refrigeration modules are installed side by side in the box, or the evaporative cold plates of the two phase-change refrigeration modules are: It is integrally connected and installed in the box; the height of the compressor is fully utilized to reduce the volume of the laser, and at the same time, the heat dissipation efficiency of the laser can be increased by increasing the number of the cooling modules.

Description of drawings

One or more embodiments are exemplified by the accompanying drawings, which do not constitute a limitation on the embodiments, and elements/modules with the same numerals in the drawings are represented as similar elements/modules, The figures in the accompanying drawings do not constitute a scale limitation unless otherwise stated.

1 is a schematic diagram of the internal structure of a laser based on a MOPA structure provided by an embodiment of the present invention when the cover is not closed;

2 is a schematic diagram of the internal structure of a laser in a MOPA structure-based laser provided by an embodiment of the present invention when the cover is closed;

3 is an exploded view between an amplification stage pump source and an evaporative cold plate in a laser based on a MOPA structure provided by an embodiment of the present invention;

4 is a schematic structural diagram of a laser based on a MOPA structure provided by an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of another angle of a laser based on the MOPA structure provided in FIG. 4 according to an embodiment of the present invention.

Detailed ways

In order to facilitate the understanding of the present utility model, the present utility model will be described in more detail below with reference to the accompanying drawings and specific embodiments. It should be noted that when an element is referred to as being "disposed on," "fixed to," or "mounted to" another element, it can be directly on the other element, or one or more intervening elements may be present therebetween. As used in this specification, the term "and/or" includes any and all combinations of one or more of the associated listed items. The orientation or positional relationship indicated by "top", "bottom", "side", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, Rather than indicating or implying that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, it should not be construed as a limitation of the present invention. In addition, in this specification, the words "first" and "second" do not limit the data and execution order, but only distinguish items with basically the same functions and functions or similar items. In the embodiments of the present utility model No restrictions apply.

Specifically, the present embodiment will be further described below with reference to the accompanying drawings.

Referring to FIGS. 1 to 3 , a laser based on a MOPA structure provided in this embodiment includes: a heat dissipation component (not marked), at least one amplification stage pump source (not marked) encapsulated in a box, and at least one A phase-change refrigeration module (not shown), the phase-change refrigeration module includes a condenser 13, an evaporative cold plate 12 and a compressor 14 connected in sequence through a cooling pipeline, and the condenser 13 and the compressor 14 are fixed to the laser The bottom of the box body is installed on the top of the condenser 13, the heat dissipation component is installed on the top of the box body, and the evaporative cold plate 12 is installed in the box body 53 and is attached to the Amplification stage pump source.

Specifically, the laser based on the MOPA structure includes: a chassis 10, wherein the chassis 10 is provided with at least one amplification stage pump source, a heat dissipation component and at least one phase-change refrigeration module packaged in the box. The refrigeration module includes: a condenser 13, an evaporative cold plate 12 and a compressor 14 connected in sequence through a cooling pipeline. The condenser 13 and the compressor 14 are fixed on the bottom plate 50 of the chassis, and the box body 53 It is installed on the top of the condenser 13 , the heat dissipation component is installed on the top of the box body 53 , and the evaporative cold plate 12 is installed in the box body 53 and attached to the amplification stage pump source.

Further, the laser based on the MOPA structure also includes a seed light source 28 and an amplifier stage optical fiber, the seed light source 28 is used to emit signal light, the amplification stage pump source is used to emit pump source light, and the seed light source is used. 28 is connected to the optical fiber of the amplification stage, and the output end of the pump source of the amplification stage is connected to the input end of the optical fiber of the amplification stage. Specifically, in this embodiment, the amplification stage pump source includes a first amplification stage pump source 45, a first amplification stage fiber (not shown), a second amplification stage pump source 27, and a second amplification stage fiber (not shown), the third amplification stage pump source 11 and the third amplification stage fiber (not shown), the seed light source 28 is connected to the first amplification stage fiber, the second amplification stage fiber, and the third amplification stage fiber in sequence Amplifying fiber, the output end of the first amplification stage pump source 45 is connected to the input end of the first amplification stage fiber, and the output end of the second amplification stage pump source 27 is connected to the second amplification stage fiber The input end of the third amplification stage pump source 11 is connected to the input end of the third amplification stage optical fiber, the seed light source 11, the first amplification stage pump source 45, the first amplification stage The optical fiber, the pump source 27 of the second amplification stage, and the optical fiber of the second amplification stage are all installed on the side of the heat dissipation assembly away from the box body 53, and the pump source 11 of the third amplification stage and the optical fiber of the third amplification stage are packaged. in the box body 53 . Encapsulating the third amplification stage pump source 11 and the third amplification stage optical fiber in the box body 53 can prevent dust in the air from entering the box body 53 and contaminating the third amplification stage pump The source 11 and the third amplifier stage fiber further improve the service life of the laser.

It should be noted that, in this embodiment, in the laser based on the MOPA structure, the third amplification stage pump source 11 is mainly used to increase the power of the laser. Therefore, the third amplification stage pump source The number of pump sources included in 11 is large, and the power provided is large, so the third amplification stage pump source 11 generates more heat, and it can be attached to the evaporative cold plate 12. Improve its cooling efficiency.

Specifically, in this embodiment, a first optical fiber winding slot 26 and a second optical fiber winding slot 25 are installed on the side of the heat dissipation assembly away from the cover 51 , and the first amplification stage optical fiber is wound around the first optical fiber. In the optical fiber winding groove 26, the second amplification stage optical fiber is wound in the second optical fiber winding groove 25, which can effectively improve the heat dissipation of the first amplification stage optical fiber, the second amplification stage optical fiber, and the third amplification stage optical fiber The first amplification stage fiber, the second amplification stage fiber, and the third amplification stage fiber are separately arranged, which is beneficial to reduce the volume of the laser while ensuring the quality of the output beam of the laser.

Further, in some embodiments, a cover body 51 with a flip cover is hingedly installed on one side of the box body 53 for encapsulating the pump source of the amplification stage, and the heat dissipation component is installed on the top of the cover body 51 , the seed light source 28 is installed on the side of the heat dissipation component away from the cover body 51 .

Specifically, the heat dissipation assembly includes a plurality of heat dissipation fins 22 and a first heat dissipation plate 23 . The plurality of heat dissipation fins 22 are arranged at intervals and located between the first heat dissipation plate 23 and the cover body 51 . The heat sink 22, the first heat sink 23 and the cover body 51 cooperate to form a plurality of air passages arranged in parallel. Three optical fibers are wound in the groove 19 .

In this embodiment, the heat dissipation assembly may further include a second heat dissipation plate 24, and a plurality of the heat dissipation fins 22 are arranged at intervals and located between the first heat dissipation plate 23 and the second heat dissipation plate 24, so An opening 52 communicated with the inside of the box body 53 is provided above the cover body 51 , and the second heat dissipation plate 24 is attached to the top of the cover body 51 for closing the opening 52 . The heat sink 22 , The first heat dissipation plate 23 and the second heat dissipation plate 24 cooperate to form a plurality of air passages arranged in parallel. The amplification stage optical fiber is wound in the third optical fiber winding groove 19 . Wherein, the first heat dissipation plate 23 and the second heat dissipation plate 24 can be arranged in parallel, so that the heat dissipation assembly can be easily prepared and formed. In this embodiment, a cover body 51 with a flip cover is hingedly installed on one side of the box body 53, so that the third amplification stage pump source 11 and the third amplification stage optical fiber are more convenient in the installation process.

Further, please continue to refer to FIG. 1 , the box body 53 is further provided with a partition 20 and an isolator 21 , and the partition 20 is arranged between the third amplification stage pump source 11 and the cover body 51 . During this time, the third amplification stage optical fiber connected to the third amplification stage pump source 11 is fixed first, so that after the third amplification stage optical fiber is passed through the beam combiner 44, the third optical fiber is coiled. The groove 19 is wound inside, so as to ensure the quality of the beam output by the first pump source 11, and at the same time to facilitate fixing the third amplifier stage fiber. The isolator 21 is fixed in the box body 53, specifically, the isolator 21 is fixed in the cover body 51, so as to make full use of the volume of the cover body 51 and further reduce the MOPA-based structure. volume of the laser.

Further, please continue to refer to FIG. 2 , in this embodiment, the heat dissipation assembly may further include a first fan group 32 and a second fan group (not shown), the first fan group 32 and the second fan group The groups are respectively arranged on both sides of the ventilation duct, so that the first fan group 32 and the second fan group directional flow from the ventilation duct in the process of driving the air flow to accelerate the heat dissipation rate of the heat sink 22 .

It should be noted that, in this embodiment, at least one amplification stage pump source and the amplification stage optical fiber connected thereto must be installed in the box body 53. It can be understood that the amplification stage pump source may only include The first amplification stage pump source 45, and the first amplification stage fiber connected to the first amplification stage pump source 45, the first amplification stage pump source and the first amplification stage fiber can be installed in the inside the box 53 . Alternatively, the pumping source of the amplification stage further includes the pumping source of the fourth amplification stage and the fourth amplification stage optical fiber connected thereto, then the pumping source of the fourth amplification stage and the optical fiber of the fourth amplification stage can also be packaged in a box body within 53. Please continue to refer to FIG. 2 , the laser based on the MOPA structure provided in this embodiment further includes: a first driving board 30 , a control board 29 electrically connected to the first driving board 30 , and the first driving board 30 is connected to the control board 30 . 29 is installed on the side of the first heat dissipation plate 23 away from the cover body 51 . In this embodiment, the first drive board 29 is used to receive the electrical signal sent by the control board 30 to further control the seed source 28 , the first stage amplification pump source 45 and the second amplification stage pump source 27 work. The first driving board 29 can also control the operation of the pump source 11 of the third amplification stage. Further, in this embodiment, the laser further includes a second driving board 31, the second driving board 31 is electrically connected to the control board 29, and the second driving board 31 is used to control the third amplification the operation of the stage pump source 11 . In addition, in this embodiment, the laser based on the MOPA structure further includes a compressor drive board 33 , which is electrically connected to the control board 29 for controlling the operation of the compressor 14 .

Further, referring to FIG. 3 , in the phase-change refrigeration module described in this embodiment, each condenser 13 is equipped with a fan group, and a refrigeration pipe 43 is installed on the evaporative cold plate 12 . One end is communicated with the cooling line 15 of the compressor 14 , and the other end is communicated with the cooling line 15 of the condenser 13 . It should be noted that, as the output power of the laser increases, its heat dissipation also increases. In order to increase the heat dissipation efficiency, in this embodiment, the laser may further include another fan group opposite to the fan set matched with the condenser 13 . A fan group is used to increase the convection of the air and improve the heat dissipation efficiency of the phase change refrigeration module.

Further, please continue to refer to FIG. 3, in this embodiment, the phase change refrigeration module further includes: a throttle valve 16, the cooling pipe 15 is connected to the compressor 14, the condenser 13, and the throttle valve 15 in sequence, so One end of the refrigeration pipe 43 on the evaporative cold plate 12 is communicated with the cooling pipe 15 communicated with the compressor 14, and the opposite end thereof is communicated with the cooling pipe 15 communicated with the condenser 13. The flow valve 16 is suspended on one side of the compressor 14 through the cooling pipeline 15 .

In this embodiment, the working principle of the phase change refrigeration module: the phase change refrigeration module is a fully enclosed refrigerant circulation system, and the compressor 14 converts the phase change medium (such as Freon, R134 and other refrigerants) from low temperature and low pressure gas Compressed into high temperature and high pressure gas, and then condensed into medium temperature and high pressure liquid through the condenser 13, and after passing through the throttle valve 16, the liquid phase change medium of low temperature and low pressure is sent to the refrigeration pipeline 43 of the evaporative cold plate 12 , because the refrigeration pipeline 43 is attached to the first pump source 11, the heat generated by the first pump source 11 is absorbed by the phase change medium and evaporated into low-temperature and low-pressure steam, which is then sent to the compressor again 14, thus completing the refrigeration cycle.

Further, in this embodiment, in order to meet the heat dissipation requirements of the laser with the medium and high power MOPA structure, the laser includes two mutually independent phase-change refrigeration modules, and the condensers 13 of the two phase-change refrigeration modules, namely the first The condenser 131 and the second condenser 132 are both fixed on the bottom plate 50 of the case, and are respectively close to two opposite side plates of the case 10; the compressors 14 of the two phase-change refrigeration modules, namely the first A compressor 141 and a second compressor 142 are both fixed on the bottom plate 50 of the chassis, and are arranged on the same side of the condenser 13 and the box 53 for encapsulating the pump source of the amplification stage, and the two The compressors 14 are arranged below the heat dissipation assembly, the evaporative cold plates 12 of the two phase-change refrigeration modules are installed on the same plane in the box 53, or, the two phase-change refrigeration modules The evaporative cold plate 12 is integrally connected and installed in the box body 53 . In order to save materials and space, in this embodiment, preferably, two evaporative cold plates 12 can be prepared to be integrally connected and installed in the box body 53 .

Please refer to FIG. 4 and FIG. 5 , the bottom plate 50 , the top plate 49 and the four side plates surrounding the bottom plate 50 and the top plate 49 constitute the chassis 10 , which are the first side plate 35 , the second side plate 36 , the third side plate 36 , the third Side plate 37, fourth side plate 38, the first side plate 35 is arranged opposite to the third side plate 37, the second side plate 36 is arranged opposite to the fourth side plate 38, the first side plate 35 is arranged opposite to the third side plate 37 The side plate 35 and the third side plate 37 are respectively provided with a first air inlet 39 and a first air outlet 40 opposite to each other, and the first air inlet 39 and the first air outlet 40 are respectively facing the The first fan group 32 and the second fan group, the first fan group 32 and the second fan group drive air to enter from the first air inlet 39, pass through the ventilation duct, and finally exit the first outlet. The tuyere 40 is discharged. In addition, the first side plate 35 and the third side plate 37 are respectively provided with a second air inlet 41 and a second air outlet 42 , and the third fan group 17 and the fourth fan group 18 are respectively facing each other. The second air inlet 41 and the second air outlet 42 allow the outside air to enter the chassis 10, accelerate the heat dissipation of the condenser 13, and further improve the phase change refrigeration module as the third amplification stage. The heat dissipation effect of the pump source 12 . In this embodiment, a power interface 46 and a transmission optical cable 34 are installed on the second side plate 36 , an external power supply supplies power to the laser through the power interface 46 , and the laser outputs laser light from the transmission optical cable 34 . An emergency switch 47 and a communication interface 48 are installed on the fourth side panel, and the communication interface 48 may be a serial port interface, a USB interface, a Bluetooth/WIFI interface, or the like.

It should be noted that, in this embodiment, the chassis 10 , the heat dissipation component, the box body 53 , the cover body 51 and the evaporative cold plate 12 are all made of materials with high thermal conductivity, such as aluminum alloy, red copper, etc. The overall heat dissipation capacity of the laser based on MOPA structure is described.

Compared with the prior art, (1) a laser based on the MOPA structure provided by the present invention includes a heat dissipation component, at least one amplification stage pump source encapsulated in the box 53, and at least one phase change refrigeration system. , the phase-change refrigeration system includes a condenser 13, an evaporative cold plate 12 and a compressor 14 that are sequentially communicated through a cooling pipeline 15. The condenser 13 and the compressor 14 are fixed on the bottom of the laser, and the box body 53 is installed on the top of the condenser 13, the heat dissipation component is installed on the top of the box body 53, and the evaporative cold plate 12 is installed in the box body 53 and is attached to the amplifier stage pump source , which replaces the traditional water cooler, reduces the volume of the laser, and expands the application range and prospect of the laser.

(2) The pump source 11 of the third amplification stage and the optical fiber of the third amplification stage are encapsulated in the box body 53 to prevent them from being polluted by dust and ensure the normal use performance of the laser based on the MOPA structure.

(3) The amplification stage pump source includes the first amplification stage pump source 45, the first amplification stage fiber, the second amplification stage pump 27 source, the second amplification stage fiber, the third amplification stage pump source 11 and The third amplification stage optical fiber, the first optical fiber winding groove 26 and the second optical fiber winding groove 25 are installed on the side of the heat dissipation assembly away from the cover 51 , the first amplification stage optical fiber is wound around the first optical fiber winding In the slot 26, the second amplification stage optical fiber is wound around the second optical fiber winding slot 25, the cover body 51 is provided with a third optical fiber winding slot 19, and the third amplification stage optical fiber is wound around the third optical fiber winding slot 19. In the fiber winding groove 19, the first amplification stage fiber, the second amplification stage fiber, and the third amplification stage fiber are respectively arranged, which is beneficial to reduce the volume of the laser while ensuring the quality of the output beam of the laser.

(4) The laser based on the MOPA structure includes two mutually independent phase-change refrigeration systems, and the condensers 13 of the two phase-change refrigeration systems are both fixed on the bottom plate 50 of the chassis, and are respectively close to the chassis The two opposite side plates 10; the compressors 14 of the two phase change refrigeration systems are fixed on the bottom plate 50, and are arranged on the condenser 13 and the box used to encapsulate the pump source of the amplification stage The two compressors 14 are arranged below the heat dissipation assembly, and the two evaporative cold plates 12 of the phase change refrigeration system are installed side by side in the box 53, or two The evaporative cold plate 12 of the phase change refrigeration system is integrally connected and installed in the box body 53; the height of the compressor 14 is fully utilized to reduce the volume of the laser, and at the same time, by increasing the phase change The number of cooling modules can increase the heat dissipation efficiency of the laser.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model, but not to limit them; under the idea of the present utility model, the technical features in the above embodiments or different embodiments can also be carried out. Combinations, steps may be implemented in any order, and there are many other variations of the different aspects of the invention described above, which are not provided in detail for the sake of brevity; although the invention has been described in detail with reference to the foregoing embodiments, Those of ordinary skill in the art should understand that: they can still make modifications to the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions depart from The scope of the technical solutions of the various embodiments of the present invention.

Claims (10)

1. A laser based on MOPA structure is characterized in that, comprising: a heat dissipation assembly, at least one amplification stage pump source encapsulated in the box body, and at least one phase-change refrigeration module, the phase-change refrigeration module comprises cooling The condenser, the evaporative cold plate and the compressor are connected in sequence by the pipeline, the condenser and the compressor are fixed on the bottom of the laser, the box is mounted on the top of the condenser, and the heat dissipation component is mounted on the bottom of the laser. The top of the box body, the evaporative cold plate is installed in the box body and attached to the amplification stage pump source. 2. the laser based on MOPA structure as claimed in claim 1 is characterized in that, described laser also comprises seed light source, amplification stage optical fiber, described seed light source is used for emitting signal light, and described amplification stage pump source is used for The pump source light is emitted, the seed light source is connected to the amplification stage fiber, and the output end of the amplification stage pump source is connected to the input end of the amplification stage fiber. 3. the laser based on MOPA structure as claimed in claim 2, is characterized in that, the cover body that is hingedly installed with the cover body that flip cover rotates on one side of the described box body that is used to encapsulate described amplification stage pump source, described cover body The heat dissipation assembly is installed on the top, and a seed light source is installed on the side of the heat dissipation assembly away from the cover body. 4. The laser based on MOPA structure as claimed in claim 3, wherein the pumping source of the amplification stage comprises the pumping source of the first amplification stage, the optical fiber of the first amplification stage, the pumping source of the second amplification stage, the pumping source of the first amplification stage, the The second amplification stage fiber, the third amplification stage pump source and the third amplification stage fiber, the seed light source is connected to the first amplification stage fiber, the second amplification stage fiber, and the third amplification stage fiber in sequence, the first amplification stage fiber The output end of the pump source of the first amplification stage is connected to the input end of the first amplification stage fiber, the output end of the second amplification stage pump source is connected to the input end of the second amplification stage fiber, and the third amplification stage is connected to the input end of the fiber. The output end of the stage pump source is connected to the input end of the third amplification stage fiber, the seed light source, the first amplification stage pump source, the first amplification stage fiber, the second amplification stage pump source, the second amplification stage The first stage optical fibers are installed on the side of the heat dissipating component away from the box body, and the third amplification stage pump source and the third amplification stage optical fiber are packaged in the box body. 5. The laser based on MOPA structure as claimed in claim 4, wherein the side of the heat dissipation assembly away from the cover body is provided with a first optical fiber winding groove, a second optical fiber winding groove, and the first The stage optical fiber is wound in the first optical fiber winding groove, and the second amplification stage optical fiber is wound in the second optical fiber winding groove. 6 . The laser based on the MOPA structure according to claim 4 , wherein the heat dissipation assembly comprises a plurality of heat dissipation fins and a first heat dissipation plate, and a plurality of the heat dissipation fins are arranged at intervals and located at the first heat dissipation plate. 7 . Between the plate and the cover body, the heat sink, the first heat sink plate and the cover body cooperate to form a plurality of air passages arranged in parallel. wound in the third optical fiber winding groove. 7. The laser based on the MOPA structure according to claim 4, wherein the heat dissipation assembly comprises a plurality of heat dissipation fins, a first heat dissipation plate and a second heat dissipation plate, and a plurality of the heat dissipation fins are arranged at intervals and located at Between the first heat dissipation plate and the second heat dissipation plate, the cover body is provided with an opening communicating with the inside of the box body, the second heat dissipation plate is attached to the top of the cover body, and the heat dissipation fins , The first heat dissipation plate and the second heat dissipation plate cooperate to form a plurality of air passages arranged in parallel, the side of the second heat dissipation plate facing the opening is provided with a third optical fiber winding groove, and the third amplification stage optical fiber is wound. in the third optical fiber winding groove. 8. The laser based on the MOPA structure according to claim 6 or 7, wherein the heat dissipation assembly further comprises: a first fan group and a second fan group, the first fan group and the second fan group are respectively are arranged on both sides of the ventilation duct; the laser further includes: a first driving board and a control board electrically connected to the first driving board, the first driving board and the control board are mounted on the first heat dissipation board The side of the plate facing away from the box body. 9 . The MOPA structure-based laser according to claim 1 , wherein, in the phase-change refrigeration module, each condenser is equipped with a fan group, and the evaporative cold plate is installed on the evaporative cold plate. 10 . There is a refrigerating pipe, one end of the refrigerating pipe is communicated with the cooling pipe communicated with the compressor, and the opposite end thereof is communicated with the cooling pipe communicated with the condenser. 10. The MOPA structure-based laser according to claim 9, wherein the laser comprises two mutually independent phase-change refrigeration modules, and the condensers of the two phase-change refrigeration modules are fixed to the laser on the bottom plate of the chassis, and are respectively close to the two opposite side plates of the chassis; the compressors of the two phase-change refrigeration modules are fixed on the bottom plate of the chassis, and are installed on the condenser and used for The same side of the box that encapsulates the pump source of the amplification stage, and the two compressors are arranged below the heat dissipation component, and the evaporative cold plates of the two phase-change refrigeration modules are installed in the box. On the same plane, or, the evaporative cold plates of the two phase-change refrigeration modules are integrally connected and installed in the box.

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