CN112038876A - Heat abstractor and fiber laser - Google Patents
Heat abstractor and fiber laser Download PDFInfo
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- CN112038876A CN112038876A CN202011212980.3A CN202011212980A CN112038876A CN 112038876 A CN112038876 A CN 112038876A CN 202011212980 A CN202011212980 A CN 202011212980A CN 112038876 A CN112038876 A CN 112038876A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric elements
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0404—Air- or gas cooling, e.g. by dry nitrogen
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06704—Housings; Packages
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Abstract
The application relates to the technical field of laser equipment, particularly, relate to a heat abstractor and fiber laser, including platelike heat dissipation main part and the tube-shape heat dissipation main part that is used for installing gain optic fibre, tube-shape heat dissipation main part has the inner chamber, platelike heat dissipation main part install in the inner chamber, platelike heat dissipation main part with tube-shape heat dissipation main part all is used for installing the device that generates heat. The application aims to provide a heat dissipation device and a fiber laser, aiming at the problems that the installation space of the fiber laser is limited and the flat fiber laser is generally difficult to arrange in certain specific application scenes such as aerospace and the like.
Description
Technical Field
The application relates to the technical field of laser equipment, in particular to a heat dissipation device and a fiber laser.
Background
The high-power optical fiber laser has more and more extensive application in the fields of industrial science and technology and the like due to the advantages of high beam quality, high conversion efficiency and high reliability, and plays a greater role in high-end manufacturing projects such as laser cutting, laser additive manufacturing, laser marking and the like.
The optical structure of the high-power fiber laser generally comprises a gain fiber, a buncher, a pumping laser diode and the like, wherein the gain fiber is used as a gain medium to finish stimulated radiation amplification, the buncher couples pumping light into the gain fiber, and the laser diode finishes conversion from electric energy to the pumping light.
The fiber laser is an optical system for converting the wavelength and beam quality of laser light output from a laser diode through an optical fiber. The electro-optical efficiency of the existing high-power optical fiber laser is about 35%, and the optical fiber laser needs to be fed with a large flow of coolant to take away heat load during working, so that the existing industrial high-power optical fiber laser is large in size and heavy in weight.
The main mechanical structure of the traditional kilowatt-level optical fiber laser comprises a flat plate structure heat sink and a 2U metal plate case package, devices such as a gain optical fiber, a buncher and a laser diode are usually fixed on a water-cooling structural member of the flat plate structure, the gain optical fiber is fixed in a runway-shaped groove of the flat plate heat sink through materials such as heat conducting glue, the buncher is connected with the flat plate heat sink through a screw, and a pump laser diode is arranged on the back of the flat plate water-cooling structural member. The conventional fiber laser is flat in structure, but in some specific application scenarios such as aerospace and the like, the installation space of the fiber laser is limited, and the flat fiber laser is generally difficult to arrange.
Disclosure of Invention
The application aims to provide a heat dissipation device and a fiber laser, aiming at the problems that the installation space of the fiber laser is limited and the flat fiber laser is generally difficult to arrange in certain specific application scenes such as aerospace and the like.
In order to achieve the purpose, the following technical scheme is adopted in the application:
one aspect of the present application provides a heat dissipation device, including platelike heat dissipation main part and the tube-shape heat dissipation main part that is used for installing gain optic fibre, tube-shape heat dissipation main part has the inner chamber, platelike heat dissipation main part install in the inner chamber, platelike heat dissipation main part with tube-shape heat dissipation main part all is used for installing the device that generates heat.
Optionally, coolant flow passages are arranged in both the plate-shaped heat dissipation body and the cylindrical heat dissipation body to exchange heat with the plate-shaped heat dissipation body and the cylindrical heat dissipation body by coolant flowing through the coolant flow passages; the inner cavity is used for air flow circulation so as to exchange heat with the plate-shaped heat dissipation main body and the cylindrical heat dissipation main body through the air flow.
The technical scheme has the beneficial effects that: through the heat dissipation mode of coolant and air-cooled heat dissipation combination, effectively improve heat abstractor's heat-sinking capability, guarantee heat abstractor's radiating effect. Moreover, the heat dissipation device has a good heat dissipation effect, and the arrangement of each device and the gain optical fiber can be properly and more compact, so that the volume and the weight of the heat dissipation device are reduced, and the volume and the weight of the optical fiber laser applying the heat dissipation device are correspondingly reduced, so that the heat dissipation device and the optical fiber laser applying the heat dissipation device are more suitable for application platforms which have strict limits on the installation space, the volume and the weight of parts.
Optionally, an optical fiber runway is formed on an outer wall of the cylindrical heat dissipation body, and the optical fiber runway extends along an axial direction of the cylindrical heat dissipation body and is spirally distributed along the axial direction of the cylindrical heat dissipation body.
The technical scheme has the beneficial effects that: the optical fiber runway is arranged on the outer wall of the cylindrical heat dissipation main body, so that the molding of the optical fiber runway is facilitated, and the installation of the gain optical fiber is also facilitated.
Optionally, the cylindrical heat dissipation body has an inner wall, the inner wall encloses the inner cavity, an optical fiber runway is formed on the inner wall, and the optical fiber runway extends along the axial direction of the cylindrical heat dissipation body and is spirally distributed along the axial direction of the cylindrical heat dissipation body.
The technical scheme has the beneficial effects that: the gain optical fiber is simultaneously radiated by combining the airflow in the inner cavity and the coolant in the cylindrical radiating main body, so that the gain optical fiber obtains a better radiating effect.
Optionally, the edge of the cross section of the cylindrical heat dissipation main body and the cross section of the inner cavity are both elliptical;
or the cross section of the cylindrical heat dissipation main body is annular.
The technical scheme has the beneficial effects that: the shape of the cylindrical heat dissipation main body can be specifically selected according to the requirement so as to be better suitable for an external installation position.
Optionally, the cross section of the inner cavity is elliptical, and the plate-shaped heat dissipation main body is connected with two end points of a long axis of the cross section of the inner cavity;
or, the plate-shaped heat dissipation main body is connected with two end points of a short shaft of the cross section of the inner cavity.
The technical scheme has the beneficial effects that: therefore, the space sizes of the two sides of the plate-shaped heat dissipation main body are basically equal, further, each device can obtain an ideal arrangement space, the air flow heat dissipation effects of the two sides of the plate-shaped heat dissipation main body are basically the same, and each device can obtain a better heat dissipation effect.
Optionally, the cross section of the cylindrical heat dissipation body is annular, the plate-shaped heat dissipation body is connected with two end points on the annular inner circle in the cross section of the heat dissipation device, and a connecting line between the two end points is the diameter of the inner circle.
The technical scheme has the beneficial effects that: therefore, the space sizes of the two sides of the plate-shaped heat dissipation main body are basically equal, further, each device can obtain an ideal arrangement space, the air flow heat dissipation effects of the two sides of the plate-shaped heat dissipation main body are basically the same, and each device can obtain a better heat dissipation effect.
Optionally, a heat dissipation fin is further disposed on the plate-shaped heat dissipation body, and the heat dissipation fin is disposed perpendicular to the plate-shaped heat dissipation body, or the heat dissipation fin is disposed obliquely with respect to the plate-shaped heat dissipation body.
The technical scheme has the beneficial effects that: the radiating capacity of the plate-shaped radiating main body can be improved by arranging the radiating fins on the plate-shaped radiating main body, so that an ideal radiating effect can be obtained even if devices and optical fibers are densely arranged.
Another aspect of the present application provides an optical fiber laser, including a gain optical fiber, a first device, a second device and the heat dissipation device provided in the embodiments of the present application, the gain optical fiber and the second device are installed on the cylindrical heat dissipation body, the first device is installed on the plate-shaped heat dissipation body, and the first device is a heat generating device.
Optionally, an optical fiber runway is formed on an outer wall of the cylindrical heat dissipation body, and the optical fiber runway extends along the axial direction of the cylindrical heat dissipation body and is spirally distributed along the axial direction of the cylindrical heat dissipation body; the cylindrical heat dissipation main body is provided with an inner wall, the inner wall encloses the inner cavity, the second device is installed in the inner cavity, and the gain optical fibers are arranged on the optical fiber runway; the second device is a pump laser diode.
The technical scheme has the beneficial effects that: because the volume of the pumping laser diode is smaller, even if the inner wall forming the inner cavity is arc-shaped, the pumping laser diode can be well fixed on the inner wall, so that the number of devices arranged on the plate-shaped heat dissipation main body is reduced, the devices can be arranged on the plate-shaped heat dissipation main body more compactly, and the volume of the optical fiber laser is reduced; although the pump laser diode has more heat dissipation, the pump laser diode is arranged on the inner wall, so that the pump laser diode can be cooled by the coolant in the cylindrical heat dissipation main body and the air flow in the inner cavity, the pump laser diode can be effectively cooled, and the heat dissipation effect is ensured.
The technical scheme provided by the application can achieve the following beneficial effects:
according to the heat dissipation device and the optical fiber laser, the original flat heat dissipation main body is partially changed into the cylindrical heat dissipation main body, and the rest of the plate-shaped heat dissipation main body is placed in the inner cavity of the cylindrical heat dissipation main body, so that the whole heat dissipation device is cylindrical or approximately cylindrical, and the heat dissipation device and the optical fiber laser using the heat dissipation device are more easily adapted to application platforms with limited installation space.
Additional features of the present application and advantages thereof will be set forth in the description which follows, or may be learned by practice of the present application.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It should be apparent that the drawings in the following description are embodiments of the present application and that other drawings may be derived from those drawings by a person of ordinary skill in the art without inventive step.
Fig. 1 is a partial structural schematic diagram of an embodiment of a fiber laser provided in an embodiment of the present application;
fig. 2 is a schematic structural diagram of an embodiment in which a first device is mounted on a plate-shaped heat dissipation body according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of an embodiment in which a heat sink is mounted on a plate-shaped heat dissipation body according to an embodiment of the present application.
Reference numerals:
a 100-gain optical fiber; 200-cylindrical heat dissipation main body;
300-lumen; 400-plate-shaped heat dissipation main body;
500-a second device; 600-a first device;
700-heat sink.
Detailed Description
The technical solutions of the present application will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are only some 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.
In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
As shown in fig. 1 to 3, one aspect of the present application provides a heat dissipating apparatus including a plate-shaped heat dissipating body 400 and a cylindrical heat dissipating body 200 for mounting a gain optical fiber, the cylindrical heat dissipating body 200 having an inner cavity 300, the plate-shaped heat dissipating body 400 being mounted in the inner cavity 300, the plate-shaped heat dissipating body 400 and the cylindrical heat dissipating body 200 being used for mounting a heat generating device.
In the embodiment of the present application, the cylindrical heat dissipating body 200 and the plate-shaped heat dissipating body 400 may be made of aluminum, copper, stainless steel, or the like.
According to the heat dissipation device provided by the application, the original completely flat heat dissipation main body is partially changed into the cylindrical heat dissipation main body 200, and the rest of the plate-shaped heat dissipation main body 400 is placed in the inner cavity 300 of the cylindrical heat dissipation main body 200, so that the whole heat dissipation device is cylindrical or approximately cylindrical, and the heat dissipation device and the optical fiber laser using the heat dissipation device are more easily adapted to application platforms with limited installation space.
Alternatively, coolant flow passages are disposed in both the plate-shaped heat dissipation body 400 and the cylindrical heat dissipation body 200 to exchange heat with the plate-shaped heat dissipation body 400 and the cylindrical heat dissipation body 200 by coolant flowing through the coolant flow passages; the inner chamber 300 is used for circulating an air flow to perform heat exchange with the plate-shaped heat dissipation body 400 and the cylindrical heat dissipation body 200 through the air flow.
Through the heat dissipation mode of coolant and air-cooled heat dissipation combination, effectively improve heat abstractor's heat-sinking capability, guarantee heat abstractor's radiating effect. Moreover, because the heat dissipation device has a good heat dissipation effect, the arrangement of each device and the gain fiber 100 can be properly and more compact, so that the volume and the weight of the heat dissipation device are reduced, and the volume and the weight of the fiber laser using the heat dissipation device are correspondingly reduced, so that the heat dissipation device and the fiber laser using the heat dissipation device are more suitable for application platforms which have strict limitations on the installation space, the volume and the weight of components. In the present embodiment, the coolant flow channel in the plate-shaped heat dissipation body 400 and the coolant flow channel in the cylindrical heat dissipation body 200 communicate with each other.
The positions of the optical fiber runways may be specifically arranged as required, and in one or more embodiments of the present application, optionally, the optical fiber runways are formed on the outer wall of the cylindrical heat dissipation body 200, and extend along the axial direction of the cylindrical heat dissipation body 200 and are spirally distributed along the axial direction of the cylindrical heat dissipation body 200. The optical fiber racetrack is disposed on the outer wall of the cylindrical heat dissipation body 200, which facilitates the molding of the optical fiber racetrack and the installation of the gain optical fiber 100. The diameter of the arc-shaped part of the outer wall of the cylindrical heat dissipation body 200 is determined by the mode selection effect that the fiber laser needs to achieve. In a high beam quality fiber laser, the transmission loss of the high-order mode laser in the core is generally increased by bending the gain fiber 100, the transmission loss of the high-order mode is larger as the bending is smaller, and the efficiency of the fiber laser is affected by the too large transmission loss, so that an appropriate bending radius of the gain fiber 100, that is, the diameter of the arc-shaped part of the outer wall of the cylindrical heat dissipation body 200, is generally selected.
In one or more embodiments of the present application, optionally, the cylindrical heat dissipation body 200 has an inner wall, the inner wall encloses the inner cavity 300, and an optical fiber track is formed on the inner wall, the optical fiber track extends along the axial direction of the cylindrical heat dissipation body 200 and is spirally distributed along the axial direction of the cylindrical heat dissipation body 200. Thus, the air flow in the inner cavity 300 and the coolant in the cylindrical heat dissipation body 200 are combined to simultaneously dissipate heat from the gain fiber 100, so that the gain fiber 100 obtains a better heat dissipation effect.
In the embodiment of the present application, the depth of the groove formed by the optical fiber track is required to satisfy the size requirement of the optical fiber, for example, the diameter of the coating layer of the common 20/400 optical fiber is 530 μm, and the depth and the width of the optical fiber track required for placing the optical fiber are 700 μm and 800 μm respectively; after the optical fiber is placed in the optical fiber runway, heat-conducting silicone grease or other heat-conducting materials need to be buried to enable the optical fiber to be in indirect contact with the cylindrical heat-radiating main body 200 to finish heat radiation, and after the optical fiber laser is integrated, glass cement or other protective materials need to be coated on the optical fiber runway to guarantee safe and stable operation of the optical fiber. The fusion point of the optical fiber and other transmission optical fibers in the integration process of the fiber laser may be fixed to the outer wall of the cylindrical heat dissipation body 200 by an adhesive tape.
Optionally, the edge of the cross section of the cylindrical heat dissipation body 200 and the cross section of the inner cavity 300 are both elliptical;
alternatively, the cross section of the cylindrical heat dissipation body 200 is annular.
In order to facilitate the preparation of the heat dissipation device and the installation of the device, the shape of the cylindrical heat dissipation body 200 can be specifically selected according to the needs, so as to better adapt to the external installation position. Of course, the cross section of the cylindrical heat dissipation body 200 may have other circular structures, as long as the optical fiber track can achieve the function of bending and selecting the mode.
Optionally, the cross section of the inner cavity 300 is elliptical, and the plate-shaped heat dissipation body 400 is connected with two end points of the long axis of the cross section of the inner cavity 300;
alternatively, the plate-shaped heat dissipation body 400 is connected to both end points of a short axis of the cross-section of the inner cavity 300.
Thus, the space sizes of the two sides of the plate-shaped heat dissipation main body 400 are basically equal, and further, each device can obtain an ideal arrangement space, the airflow heat dissipation effects of the two sides of the plate-shaped heat dissipation main body 400 are basically the same, and each device can obtain a better heat dissipation effect.
Optionally, the cross section of the cylindrical heat dissipation body 200 is annular, the plate-shaped heat dissipation body 400 is connected to two end points on the annular inner circle in the cross section of the heat dissipation device, and a connection line between the two end points is the diameter of the inner circle.
Thus, the space sizes of the two sides of the plate-shaped heat dissipation main body 400 are basically equal, and further, each device can obtain an ideal arrangement space, the airflow heat dissipation effects of the two sides of the plate-shaped heat dissipation main body 400 are basically the same, and each device can obtain a better heat dissipation effect. The cylindrical heat dissipating body 200 is preferably a straight cylindrical structure, but may be a curved cylindrical structure.
Optionally, a heat sink 700 is further disposed on the plate-shaped heat dissipating body 400, and the heat sink 700 is disposed perpendicular to the plate-shaped heat dissipating body 400, or the heat sink 700 is disposed obliquely to the plate-shaped heat dissipating body 400. The heat dissipation capability of the plate-shaped heat dissipation body 400 can be improved by providing the heat dissipation fins 700 on the plate-shaped heat dissipation body 400, so that a more ideal heat dissipation effect can be obtained even if the devices and the optical fibers are densely arranged. There may be at least two fins 700.
Another aspect of the present application provides an optical fiber laser, including a gain optical fiber 100, a first device 600, a second device 500, and the heat dissipation apparatus provided in the embodiments of the present application, wherein the gain optical fiber 100 and the second device 500 are mounted on the cylindrical heat dissipation body 200, the first device 600 is mounted on the plate-shaped heat dissipation body 400, and the first device 600 is a heat generating device.
The optical fiber laser provided by the application adopts the heat dissipation device provided by the application, the original completely flat heat dissipation main body is partially changed into the cylindrical heat dissipation main body 200, and the rest plate-shaped heat dissipation main body 400 is placed in the inner cavity 300 of the cylindrical heat dissipation main body 200, so that the whole heat dissipation device is cylindrical or approximately cylindrical, and the heat dissipation device and the optical fiber laser using the heat dissipation device are more easily adapted to application platforms with limited installation space.
Optionally, an optical fiber track is formed on an outer wall of the cylindrical heat dissipation body 200, and the optical fiber track extends along an axial direction of the cylindrical heat dissipation body 200 and is spirally distributed along the axial direction of the cylindrical heat dissipation body 200; the cylindrical heat dissipation body 200 has an inner wall enclosing the inner cavity 300, the second device 500 is mounted in the inner cavity 300, and the gain fiber 100 is disposed on the fiber track; the second device 500 is a pump laser diode. Because the volume of the pump laser diode is smaller, even if the inner wall forming the inner cavity 300 is arc-shaped, the pump laser diode can be well fixed on the inner wall, so that the number of devices arranged on the plate-shaped heat dissipation main body 400 is reduced, the devices can be arranged on the plate-shaped heat dissipation main body 400 more compactly, and the volume of the optical fiber laser is reduced; the optical fiber laser generally has a large number of pump laser diodes, and the pump laser diodes generally dissipate heat more, however, the pump laser diodes are arranged on the inner wall, and can be cooled by the coolant in the cylindrical heat dissipation main body 200 and the air flow in the inner cavity 300, so that the pump laser diodes are effectively dissipated heat, the heat dissipation effect is ensured, and the pump laser diodes can be uniformly arranged along the axial direction of the cylindrical heat dissipation main body 200. Of course, the optical fiber runways may extend along the axial direction of the cylindrical heat dissipation body 200 and be spirally distributed along the axial direction of the cylindrical heat dissipation body 200, and the second device 500 may be mounted on the outer wall. In the embodiment of the present application, there may be a plurality of first devices 600, and each first device 600 may be a fiber grating, a fiber combiner, a filter, and the like. The surfaces of the first and second devices 600 and 500 contacting the heat sink may be made of a rapid thermal homogenization material such as a vapor chamber to reduce the density of the heat flux, and when the plate-shaped heat sink body 400 is provided with fins, the heat may be carried away by the fins.
Compared with the traditional kilowatt-level fiber laser structure, the fiber laser provided by the embodiment greatly reduces the volume of the fiber laser, and has higher space utilization rate. The general size of traditional flat structure kilowatt level continuous fiber laser is about 600mm 500mm 150mm, adopts this application back fiber laser can reduce the size to about 600mm 200mm, to the strict limited fiber laser installation region in width space, adopts the fiber laser that this application embodiment provided to be more convenient for install.
According to the optical fiber laser provided by the embodiment of the application, the optical fiber device with smaller heat loss is placed on the plate-shaped heat dissipation main body 400, and a heat dissipation mode of fin air convection heat dissipation is adopted, so that the optical fiber laser is a more reasonable heat management mode compared with a heat dissipation mode adopted by a traditional optical fiber laser. The device with small heat loss is radiated by adopting the mode of air and coolant convection, and the weight of the optical fiber laser is reduced. Of course, phase change materials can be arranged in the cylindrical heat dissipation main body 200 and/or the plate-shaped heat dissipation main body 400 and are used as cooling agents to be cooled, and after the optical fiber laser is used, external refrigeration equipment is connected to cool the phase change materials, so that the phase change materials are recycled, refrigeration equipment is not required to be specially arranged on the application platform for the optical fiber laser, and the weight of the application platform and the occupied space can be further reduced.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. The heat dissipation device is characterized by comprising a plate-shaped heat dissipation body and a cylindrical heat dissipation body for mounting a gain optical fiber, wherein the cylindrical heat dissipation body is provided with an inner cavity, the plate-shaped heat dissipation body is mounted in the inner cavity, and the plate-shaped heat dissipation body and the cylindrical heat dissipation body are used for mounting a heating device.
2. The heat dissipating device according to claim 1, wherein coolant flow passages are arranged in each of the plate-shaped heat dissipating body and the cylindrical heat dissipating body to exchange heat with the plate-shaped heat dissipating body and the cylindrical heat dissipating body by coolant flowing through the coolant flow passages; the inner cavity is used for air flow circulation so as to exchange heat with the plate-shaped heat dissipation main body and the cylindrical heat dissipation main body through the air flow.
3. The heat dissipating device of claim 1, wherein an optical fiber track is formed on an outer wall of the cylindrical heat dissipating body, the optical fiber track extending in an axial direction of the cylindrical heat dissipating body and spirally distributed in the axial direction of the cylindrical heat dissipating body.
4. The heat dissipating device of claim 1, wherein the cylindrical heat dissipating body has an inner wall that encloses the inner cavity, and an optical fiber track is formed on the inner wall, the optical fiber track extending along an axial direction of the cylindrical heat dissipating body and spirally extending along the axial direction of the cylindrical heat dissipating body.
5. The heat dissipating device of claim 1, wherein the edges of the cross-section of the cylindrical heat dissipating body and the cross-section of the inner cavity are both elliptical;
or the cross section of the cylindrical heat dissipation main body is annular.
6. The heat dissipating device according to claim 5, wherein the cross section of the inner cavity is elliptical, and the plate-shaped heat dissipating body is connected to both end points of the major axis of the cross section of the inner cavity;
or, the plate-shaped heat dissipation main body is connected with two end points of a short shaft of the cross section of the inner cavity.
7. The heat dissipating device of claim 5, wherein the cylindrical heat dissipating body has a circular cross section, the plate-shaped heat dissipating body is connected to two end points on an inner circle of the circular cross section of the heat dissipating device, and a connecting line between the two end points is a diameter of the inner circle.
8. The heat dissipating device as claimed in any one of claims 1 to 7, wherein a heat dissipating fin is further provided on the plate-shaped heat dissipating body, the heat dissipating fin being provided perpendicularly to the plate-shaped heat dissipating body or being provided obliquely with respect to the plate-shaped heat dissipating body.
9. A fiber laser comprising a gain fiber, a first device, a second device and the heat sink of any one of claims 1-8, wherein the gain fiber and the second device are mounted on the cylindrical heat sink body, the first device is mounted on the plate-shaped heat sink body, and the first device is a heat generating device.
10. The fiber laser of claim 9, wherein a fiber raceway is formed on an outer wall of the cylindrical heat dissipating body, the fiber raceway extending in an axial direction of the cylindrical heat dissipating body and being spirally distributed in the axial direction of the cylindrical heat dissipating body; the cylindrical heat dissipation main body is provided with an inner wall, the inner wall encloses the inner cavity, the second device is installed in the inner cavity, and the gain optical fibers are arranged on the optical fiber runway; the second device is a pump laser diode.
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| CN202011212980.3A CN112038876A (en) | 2020-11-04 | 2020-11-04 | Heat abstractor and fiber laser |
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| CN202011212980.3A CN112038876A (en) | 2020-11-04 | 2020-11-04 | Heat abstractor and fiber laser |
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| CN102891423A (en) * | 2012-09-25 | 2013-01-23 | 中国科学院半导体研究所 | Integrated optical fiber laser |
| CN109314363A (en) * | 2016-04-26 | 2019-02-05 | 恩耐公司 | Low dimensional and weight, high power optical fibre laser pump |
| CN107959220A (en) * | 2016-10-14 | 2018-04-24 | 苏州孚尔唯系统集成有限公司 | The optical fiber coiling device and method of a kind of optical fiber laser cylindrical tapered thread groove |
| CN208571214U (en) * | 2018-08-15 | 2019-03-01 | 深圳番越光电有限公司 | A kind of optical fiber laser optical fiber dish structure |
| CN210779472U (en) * | 2019-10-28 | 2020-06-16 | 佛山市宝光新宇实业有限公司 | Optical fiber cladding light stripping structure with simple structure |
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