CN110896193B - High-stability optical fiber laser - Google Patents
High-stability optical fiber laser Download PDFInfo
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- CN110896193B CN110896193B CN201911168899.7A CN201911168899A CN110896193B CN 110896193 B CN110896193 B CN 110896193B CN 201911168899 A CN201911168899 A CN 201911168899A CN 110896193 B CN110896193 B CN 110896193B
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- flow channel
- water inlet
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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
- H01S3/0407—Liquid cooling, e.g. by water
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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
- H01S3/05—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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- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a high-stability optical fiber laser, which comprises a pumping source and a pumping source cooling assembly, wherein the pumping source cooling assembly comprises a shell, a heat conduction cover plate, a main water inlet pipe, a water outlet pipe and a plurality of spoilers, the heat conduction cover plate is connected to the shell, a sealed cavity is formed between the shell and the heat conduction cover plate, a plurality of partition plates which are arranged in a staggered mode are arranged in the shell, so that the cavity is divided into a zigzag flow channel, the spoilers are arranged in the flow channel, the heat conduction cover plate is connected with a plurality of groups of heat dissipation plates, the main water inlet pipe is connected to a main water inlet of the shell, the main water inlet is communicated with the upstream of the flow channel, the water outlet pipe is connected to a water outlet of the shell, a branch water inlet is further. The high-stability optical fiber laser provided by the invention has the advantages that the temperature of the pump source can be effectively reduced by the pump source cooling component, and the cooling effect is good.
Description
Technical Field
The invention relates to a laser, in particular to a high-stability optical fiber laser.
Background
The optical fiber laser is a laser using rare earth element doped glass optical fiber as a gain medium, and has a wide application range, including laser optical fiber communication, industrial shipbuilding, automobile manufacturing, military and national defense safety, medical instruments and equipment and the like.
Published patent CN201520533105.3 discloses a 1053nm waveband high-stability fiber laser, which comprises a wavelength division multiplexer, a high-reflection grating, an active fiber, an optical splitter, a low-reflection grating, a single-stage polarization-independent isolator and a pump source, wherein the wavelength division multiplexer is respectively connected with the pump source and the high-reflection grating, the high-reflection grating is also connected with the optical splitter through the active fiber, the optical splitter is also connected with the single-stage polarization-independent isolator and the pump source through the low-reflection grating, and the optical splitter is also connected with a fiber ring mirror. However, the pump source generates a large amount of heat during operation, and the conventional pump source heat dissipation structure has a poor effect, so that the temperature of the pump source cannot be effectively reduced, and the normal operation of the laser is affected.
In summary, how to effectively reduce the temperature of the pump source is a problem that needs to be solved urgently by those skilled in the art.
Disclosure of Invention
The invention aims to provide a high-stability fiber laser, which solves the problem that the normal work of the laser is influenced by the overhigh pumping source temperature of the existing laser.
In order to solve the technical problems, the invention provides the following technical scheme: a high-stability optical fiber laser comprises a pumping source and a pumping source cooling assembly, wherein the pumping source cooling assembly comprises a shell, a heat-conducting cover plate, a main water inlet pipe, a water outlet pipe and a plurality of spoilers, the heat-conducting cover plate is connected on the shell, a sealed cavity is formed between the shell and the heat-conducting cover plate, a plurality of baffle plates which are arranged in a staggered way are arranged in the shell, so that the cavity is divided into a zigzag flow passage, the spoiler is arranged in the flow channel, a plurality of groups of heat dissipation plates are connected on the heat conduction cover plate, the main water inlet pipe is connected with the main water inlet of the shell, the main water inlet is communicated with the upstream of the flow passage, the water outlet pipe is connected with the water outlet of the shell, the shell is also provided with a water inlet, the branch water inlet is communicated with the middle and lower reaches of the flow channel, and the branch water inlet pipe is connected to the branch water inlet.
Furthermore, the number of the partition plates is two, the flow channel is provided with a first flow channel part, a second flow channel part and a third flow channel part, the tail end of the first flow channel part is communicated with the starting end of the second flow channel part, the tail end of the second flow channel part is communicated with the starting end of the third flow channel part, the main water inlet is communicated with the starting end of the first flow channel part, and the branch water inlet is communicated with the starting end of the third flow channel part.
Further, the spoiler is disposed between the adjacent two sets of the heat dissipation plates.
Further, the spoiler comprises a first arc bending portion, a second arc bending portion and a connecting plate portion, wherein the first arc bending portion and the second arc bending portion are in a splayed shape, the connecting plate portion is connected between the first arc bending portion and the near end of the second arc bending portion, and a first flow hole is formed in the connecting plate portion.
Furthermore, a second flow hole is arranged on the first arc-shaped bent part, and a third flow hole is arranged on the second arc-shaped bent part.
Further, still include the sealing washer, the sealing washer sets up the casing with heat conduction apron between.
Furthermore, a sealing groove is formed in the top of the shell, the sealing ring is arranged in the sealing groove, and the cross section of the sealing ring is concave.
Furthermore, a boss matched with the sealing ring is arranged at the bottom of the heat-conducting cover plate, the body of the seal ring has an annular outer lip arm portion and an annular inner lip arm portion, the inner lip arm portion is provided on the inner periphery of the body, the outer lip arm is arranged on the periphery of the body, the boss extends into an annular groove between the outer lip arm and the inner lip arm, the top of the outer lip arm part is pressed against the heat-conducting cover plate, the first convex lip on the periphery of the outer lip arm part is pressed against the inner peripheral wall of the outer side of the sealing groove, the second convex lip on the inner periphery of the outer lip arm part is pressed against the outer peripheral wall of the boss, the top of the inner lip arm part is pressed against the heat-conducting cover plate, the third lip on the periphery of the inner lip arm portion is pressed against the inner peripheral wall of the boss, and the fourth lip on the inner periphery of the inner lip arm portion is pressed against the inner peripheral wall of the inner side of the sealing groove.
Furthermore, the bottom of the annular groove is provided with a central convex lip which is pressed against the bottom wall of the boss.
Further, the embedded first skeleton that is equipped with of body, one of first skeleton is served and is connected with second skeleton and third skeleton, the second skeleton with the free end of third skeleton all to the top of outer lip arm extends, be connected with fourth skeleton and fifth skeleton on the other end of first skeleton, the fourth skeleton with the free end of fifth skeleton all to the top of inner lip arm extends.
According to the technical scheme, the invention has the following beneficial effects:
according to the invention, the arrangement of the branch water inlet enables the pump source cooling assembly to supplement cooling water with lower temperature into the third flow channel part, so that the problem of poor local cooling effect caused by the rise of the water temperature in the tail section of the flow channel is effectively avoided; in addition, the spoiler is provided with and does benefit to the cooling water in the runner and forms the torrent, and the even that makes the water temperature of cooling water become with higher speed, and then is favorable to the cooling water to carry out the heat exchange with next a set of heating panel, has promoted this pumping source cooling module's radiating effect.
The invention is described in further detail below with reference to the figures and the detailed description.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a schematic view of the structure at a-a in fig. 1.
Fig. 3 is a schematic cross-sectional view of a spoiler according to the present invention.
Fig. 4 is a left side view of the spoiler of the present invention.
Fig. 5 is an enlarged schematic view of a structure at B in fig. 2.
Fig. 6 is a schematic structural view of the present invention in use.
Description of reference numerals: the heat exchanger comprises a shell 1, a main water inlet 11, a branch water inlet 12, a water outlet 13, a partition plate 14, a flow channel 15, a first flow channel part 151, a second flow channel part 152, a third flow channel part 153, a first connecting part 16, a sealing groove 17, a heat conducting cover plate 2, a boss 21, a second connecting part 22, a heat dissipation plate 3, a main water inlet pipe 4, a branch water inlet pipe 41, a water outlet pipe 5, a spoiler 6, a first arc-bent part 61, a second flow hole 611, a second arc-bent part 62, a third flow hole 621, a connecting plate part 63, a first flow hole 631, a sealing ring 7, a body 71, an outer lip arm 711, a first convex lip 7111, a second convex lip 7112, an inner lip arm 712, a third convex lip 7121, a fourth convex lip 7122, an annular groove 713, a central convex lip 714, a first framework 72, a second framework 73, a third framework 74, a fourth framework 75 and a fifth framework.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The present invention is further described with reference to fig. 1 to 6, and as shown in fig. 1, the high stability fiber laser includes a wavelength division multiplexer, a high-reflection grating, an active fiber, a beam splitter, a low-reflection grating, a single-stage polarization independent isolator, a pump source and a pump source cooling module, the wavelength division multiplexer is respectively connected to the pump source and the high-reflection grating, the high-reflection grating is further connected to the beam splitter through the active fiber, the beam splitter is further connected to the single-stage polarization independent isolator and the pump source through the low-reflection grating, the beam splitter is further connected to a fiber ring mirror, the pump source cooling module includes a housing 1, a heat-conducting cover plate 2, a main water inlet pipe 4, a water outlet pipe 5 and a plurality of spoilers 6, the pump source is connected to the heat-conducting cover plate 2, the heat-conducting cover plate 2 is hermetically connected to the housing 1, so that a sealed cavity is formed between the housing 1 and the heat-conducting cover plate 2, make the cavity separated into tortuous runner 15, be connected with a plurality of groups heating panel 3 on the heat conduction apron 2, spoiler 6 sets up in runner 15, and be located between two sets of adjacent heating panel 3, main inlet tube 4 is connected on the main water inlet 11 of casing 1, main water inlet 11 communicates with the upper reaches of runner 15, outlet pipe 5 is connected on the delivery port 13 of casing 1, still be provided with a water inlet 12 on the casing 1, branch water inlet 12 communicates with the well low reaches of runner 15, a water inlet 41 is connected on a water inlet 12.
Preferably, as shown in fig. 1, two partition plates 14 are provided, and further the flow channel 15 has a first flow channel part 151, a second flow channel part 152 and a third flow channel part 153, a terminal of the first flow channel part 151 communicates with a starting end of the second flow channel part 152, a terminal of the second flow channel part 152 communicates with a starting end of the third flow channel part 153, the main water inlet 11 communicates with a starting end of the first flow channel part 151, the branch water inlet 12 communicates with a starting end of the third flow channel part 153, and the water outlet 13 communicates with a terminal of the third flow channel part 153, the branch water inlet 12 is provided to enable the pump source cooling module to supplement cooling water with a relatively low temperature into the flow channel 15, thereby effectively avoiding a problem of poor local cooling effect caused by a rise in water temperature in a terminal section of the flow channel 15.
Preferably, as shown in fig. 2, the spoiler 6 is disposed between two adjacent groups of heat dissipation plates 3, the spoiler 6 is disposed such that water in the flow channel 15 forms a turbulent flow, which is beneficial to making water temperature more uniform, and further, heat exchange between the next group of heat dissipation plates 3 and cooling water can be effectively accelerated, thereby avoiding a problem of low cooling efficiency caused by non-uniform water temperature, specifically, the spoiler 6 includes a first curved portion 61, a second curved portion 62 and a connection plate portion 63, the first curved portion 61 is connected to the housing 1, the first curved portion 61 and the second curved portion 62 are in a shape of "eight", the connection plate portion 63 is connected between proximal ends of the first curved portion 61 and the second curved portion 62, the connection plate portion 63 is provided with a first flow hole 631, the first curved portion 61 is provided with a second flow hole 611, and the second curved portion 62 is provided with a third flow hole 621.
As shown in fig. 2 and 5, the top of the casing 1 is provided with a sealing groove 17 in a square ring shape, the sealing groove 17 is provided with a sealing ring 7, the cross section of the sealing ring 7 is in a concave shape, the bottom of the heat conducting cover plate 2 is provided with a boss 21 matched with the sealing ring 7, specifically, the body 71 of the sealing ring 7 is provided with an outer lip arm 711 in a ring shape and an inner lip arm 712 in a ring shape, the inner lip arm 712 is arranged on the inner circumference of the body 71, the outer lip arm 711 is arranged on the outer circumference of the body 71, an annular groove 713 is formed between the outer lip arm 711 and the inner lip arm 712, the boss 21 extends into the annular groove 713, the top of the outer lip arm 711 is pressed against the heat conducting cover plate 2, the first lip 7111 on the outer circumference of the outer lip arm 711 is pressed against the inner circumference wall on the outer side of the sealing groove 17, the second lip 7112 on the inner circumference of the outer lip, the top of the inner lip arm 712 abuts against the heat-conducting cover plate 2, the third lip 7121 on the outer periphery of the inner lip arm 712 abuts against the inner peripheral wall of the boss 21, the fourth lip 7122 on the inner periphery of the inner lip arm 712 abuts against the inner peripheral wall of the sealing groove 17, the bottom of the body 71 abuts against the bottom wall of the sealing groove 17, the bottom of the annular groove 713 is provided with the central lip 714, and the central lip 714 abuts against the bottom wall of the boss 21, so that the structure forms multi-level sealing, therefore, the sealing ring 7 can effectively prevent water in the shell 1 from leaking outwards from a gap at the joint of the shell 1 and the heat-conducting cover plate 2, and the sealing effect is good.
Preferably, a first framework 72 is embedded in the body 71, one end of the first framework 72 is connected with a second framework 73 and a third framework 74, the second framework 73 is partially embedded in the first lip 7111, and the free end of the second rib 73 extends toward the top of the outer lip arm 711, the third rib 74 is partially embedded in the second lip 7112, and the free end of the third rib 74 extends to the top of the outer lip arm 711, the other end of the first rib 72 is connected with the fourth rib 75 and the fifth rib 76, the fourth rib 75 is partially embedded in the third lip 7121, and the free end of the fourth rib 75 extends to the top of the inner lip arm portion 712, the fifth rib 76 is partially embedded in the fourth lip 7122, and the free end of the fifth framework 76 extends to the top of the inner lip arm 712, the arrangement of the structure can effectively improve the rigidity of the body 71 of the sealing ring 7, and prolong the service life of the sealing ring 7.
Preferably, as shown in fig. 2, four first connection portions 16 are arranged on the outer periphery of the housing 1, and second connection portions 22, which are matched with the four first connection portions 16 in a one-to-one correspondence manner, are arranged on the outer periphery of the heat-conducting cover plate 2, and the first connection portions 16 are connected to the corresponding second connection portions 22 through screws.
As shown in fig. 1, 2 and 6, when in use, heat generated by the pump source is continuously transmitted to the heat dissipation plate 3 through the heat conductive cover plate 2, meanwhile, cooling water enters the first flow channel part 151 from the main water inlet pipe 4, then the cooling water passes through six groups of heat dissipation plates 3 and six groups of spoilers 6 in turn, the cooling water exchanges heat with the heat dissipation plate 3 when passing through the heat dissipation plate 3, when the cooling water passes through the spoilers 6, the spoilers 6 make the cooling water form turbulence to accelerate the water temperature of the cooling water to be uniform, which is beneficial for the cooling water to exchange heat with the next group of heat dissipation plates 3, so as to improve the heat dissipation effect of the pump source cooling assembly, in addition, a branch water inlet 12 is arranged at the beginning of the third flow channel part 153 to supplement the cooling water with lower temperature into the flow channel 15, effectively reduce the temperature of the cooling water passing through the third flow channel part 153, and be beneficial for the cooling water to exchange heat with the heat dissipation plates 3 in the, the heat dissipation effect of the pump source cooling assembly is further improved.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. The high-stability optical fiber laser comprises a pumping source and is characterized by further comprising a pumping source cooling assembly, wherein the pumping source cooling assembly comprises a shell (1), a heat-conducting cover plate (2), a main water inlet pipe (4), a water outlet pipe (5) and a plurality of spoilers (6), the heat-conducting cover plate (2) is connected onto the shell (1), a sealed cavity is formed between the shell (1) and the heat-conducting cover plate (2), a plurality of partition plates (14) which are arranged in a staggered mode are arranged in the shell (1), so that the cavity is divided into a zigzag flow channel (15), the spoilers (6) are arranged in the flow channel (15), a plurality of groups of heat-radiating plates (3) are connected onto the heat-conducting cover plate (2), the main water inlet pipe (4) is connected onto a main water inlet (11) of the shell (1), and the main water inlet (11) is communicated with the upstream of the flow channel (15), the water outlet pipe (5) is connected to a water outlet (13) of the shell (1), a water inlet (12) is further formed in the shell (1), the water inlet (12) is communicated with the middle downstream of the flow channel (15), a water inlet pipe (41) is connected to the water inlet (12), the high-stability optical fiber laser further comprises a sealing ring (7), the sealing ring (7) is arranged between the shell (1) and the heat-conducting cover plate (2), a sealing groove (17) is formed in the top of the shell (1), the sealing ring (7) is arranged in the sealing groove (17), the cross section of the sealing ring (7) is concave, a boss (21) matched with the sealing ring (7) is arranged at the bottom of the heat-conducting cover plate (2), and a body (71) of the sealing ring (7) is provided with an annular outer lip arm portion (711) and an annular inner lip arm portion (712), the inner lip arm (712) is arranged on the inner periphery of the body (71), the outer lip arm (711) is arranged on the outer periphery of the body (71), the boss (21) extends into the outer lip arm (711) and the annular groove (713) between the inner lip arm (712), the top of the outer lip arm (711) is pressed on the heat-conducting cover plate (2), the first convex lip (7111) on the outer periphery of the outer lip arm (711) is pressed on the outer side inner peripheral wall of the sealing groove (17), the second convex lip (7112) on the inner periphery of the outer lip arm (711) is pressed on the outer peripheral wall of the boss (21), the top of the inner lip arm (712) is pressed on the heat-conducting cover plate (2), the third convex lip (7121) on the outer periphery of the inner lip arm (712) is pressed on the inner peripheral wall of the boss (21), and the fourth convex lip (7122) on the inner periphery of the inner lip (712) is pressed on the inner side of the sealing groove (17) On the peripheral wall.
2. The high-stability fiber laser according to claim 1, wherein the spacer (14) is provided in two, and the flow channel (15) has a first flow channel portion (151), a second flow channel portion (152), and a third flow channel portion (153), wherein a tip of the first flow channel portion (151) communicates with a start end of the second flow channel portion (152), a tip of the second flow channel portion (152) communicates with a start end of the third flow channel portion (153), the main water inlet (11) communicates with a start end of the first flow channel portion (151), and the branch water inlet (12) communicates with a start end of the third flow channel portion (153).
3. The high stability fiber laser according to claim 2, wherein the spoiler (6) is disposed between two adjacent sets of heat dissipation plates (3).
4. The high stability fiber laser according to claim 1 or 3, wherein the spoiler (6) comprises a first curved portion (61), a second curved portion (62), and a connecting plate portion (63), wherein the first curved portion (61) and the second curved portion (62) are in a shape of "eight", the connecting plate portion (63) is connected between proximal ends of the first curved portion (61) and the second curved portion (62), and a first flow hole (631) is provided in the connecting plate portion (63).
5. The high stability fiber laser of claim 4, wherein a second flow hole (611) is provided on the first bend (61) and a third flow hole (621) is provided on the second bend (62).
6. The high stability fiber laser according to claim 1, characterized in that the bottom of the annular groove (713) is provided with a central lip (714), the central lip (714) pressing against the bottom wall of the boss (21).
7. The high-stability fiber laser according to claim 6, wherein a first skeleton (72) is embedded in the body (71), one end of the first skeleton (72) is connected with a second skeleton (73) and a third skeleton (74), free ends of the second skeleton (73) and the third skeleton (74) extend to the top of the outer lip arm (711), the other end of the first skeleton (72) is connected with a fourth skeleton (75) and a fifth skeleton (76), and free ends of the fourth skeleton (75) and the fifth skeleton (76) extend to the top of the inner lip arm (712).
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| CN201911168899.7A CN110896193B (en) | 2019-11-25 | 2019-11-25 | High-stability optical fiber laser |
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| CN201911168899.7A CN110896193B (en) | 2019-11-25 | 2019-11-25 | High-stability optical fiber laser |
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| CN110896193B true CN110896193B (en) | 2020-12-15 |
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| CN209571688U (en) * | 2019-02-28 | 2019-11-01 | 上海毫厘机电科技有限公司 | A kind of water-cooled plate for pump laser |
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2019
- 2019-11-25 CN CN201911168899.7A patent/CN110896193B/en active Active
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| US20060045153A1 (en) * | 2004-08-31 | 2006-03-02 | Carter Serrena M | Low thermal expansion coefficient cooler for diode-laser bar |
| CN101867143A (en) * | 2010-06-22 | 2010-10-20 | 中国人民解放军国防科学技术大学 | Integral cooling device for high-power optical fiber laser or amplifier |
| CN204741015U (en) * | 2015-05-26 | 2015-11-04 | 中山大洋电机股份有限公司 | Power semiconductor's heat radiation structure |
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| CN110896193A (en) | 2020-03-20 |
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Denomination of invention: A High Stability Fiber Laser Effective date of registration: 20230704 Granted publication date: 20201215 Pledgee: Hangzhou High-tech Financing Guarantee Co.,Ltd. Pledgor: Hangzhou Hairong Laser Technology Co.,Ltd. Registration number: Y2023330001361 |
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