WO2000011922A1 - Heat sink, and semiconductor laser and semiconductor laser stacker using the same - Google Patents
Heat sink, and semiconductor laser and semiconductor laser stacker using the same Download PDFInfo
- Publication number
- WO2000011922A1 WO2000011922A1 PCT/JP1999/001968 JP9901968W WO0011922A1 WO 2000011922 A1 WO2000011922 A1 WO 2000011922A1 JP 9901968 W JP9901968 W JP 9901968W WO 0011922 A1 WO0011922 A1 WO 0011922A1
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- WO
- WIPO (PCT)
- Prior art keywords
- heat sink
- semiconductor laser
- plate member
- groove
- sink according
- Prior art date
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Classifications
-
- 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
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/024—Arrangements for thermal management
- H01S5/02407—Active cooling, e.g. the laser temperature is controlled by a thermo-electric cooler or water cooling
- H01S5/02423—Liquid cooling, e.g. a liquid cools a mount of the laser
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/473—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing liquids
-
- 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
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4031—Edge-emitting structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
-
- 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
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/0235—Method for mounting laser chips
- H01S5/02375—Positioning of the laser chips
-
- 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
- H01S5/00—Semiconductor lasers
- H01S5/40—Arrangement of two or more semiconductor lasers, not provided for in groups H01S5/02 - H01S5/30
- H01S5/4025—Array arrangements, e.g. constituted by discrete laser diodes or laser bar
- H01S5/4031—Edge-emitting structures
- H01S5/4043—Edge-emitting structures with vertically stacked active layers
- H01S5/405—Two-dimensional arrays
Definitions
- the present invention relates to a heat sink used for heat radiation of a heating element such as a semiconductor device, and a semiconductor laser device and a semiconductor laser device using the same.
- the heat sink used for heat radiation of a heating element such as a semiconductor device, for example, a heat sink having a structure in which cooling water is circulated therein, as disclosed in Japanese Patent Application Laid-Open No. 8-1334979, is known. ing.
- the heat sink includes a pipe-shaped supply channel to which pressurized cooling water is supplied, a discharge channel for discharging the cooling water, and an ejection hole for discharging the cooling water supplied to the supply channel into the discharge channel. cooling water jetted at high pressure from the c the ejection hole configured Te, the efficiency to better dissipate true upper part placed on heating element of the ejection hole. Disclosure of the invention
- the heat sink according to the related art has the following problems. That is, since the heat sink according to the above-described related art has a pipe-shaped supply water channel, the thickness of the heat sink increases and the size of the heat sink increases.
- an object of the present invention is to provide a thin heat sink having high heat dissipation efficiency, and a semiconductor laser device and a semiconductor laser device using the heat sink.
- a heat sink according to the present invention includes a first plate-shaped member having a first groove formed on an upper surface, and a second plate-shaped member having a second groove formed on a lower surface.
- a partition plate provided between the upper surface of the first flat plate member and the lower surface of the second flat plate member, wherein the partition plate includes the first groove and the partition.
- a hole is provided for communicating a first space formed by the lower surface of the plate and a second space formed by the second groove and the upper surface of the partition plate, and the first space has A first connecting member for connecting a bottom surface of the first groove and a lower surface of the partition plate; and a supply port for supplying a fluid to the first space; And a discharge port for discharging a fluid.
- the thickness can be reduced. Also, by providing the first connecting member, when the fluid is supplied to the first space, the fluid opposes the pressure pressing the bottom surface of the first groove and the lower surface of the partition plate. Can be. Therefore, the deformation of the first space is prevented, and thus the deformation of the second space and the heat sink as a whole are prevented. As a result, the efficiency of fluid flow is improved, the degree of adhesion between the device to be cooled and the heat sink is improved, and the efficiency of heat dissipation of the device is improved.
- a semiconductor laser device of the present invention includes the heat sink and a semiconductor laser mounted on an upper surface of the second plate-shaped member of the heat sink.
- the size of the semiconductor laser device can be reduced, the heat radiation efficiency of the semiconductor laser can be improved, and stable laser light can be output.
- the semiconductor laser stack device of the present invention comprises: a first and a second heat sink; First and second semiconductor lasers, wherein the first and second heat sinks are the heat sinks, and the first semiconductor laser is a second heat sink of the first heat sink.
- the second semiconductor laser is sandwiched between an upper surface and a lower surface of the first plate member of the second heat sink, and the second semiconductor laser is mounted on an upper surface of the second plate member of the second heat sink. It is characterized by having.
- the size of the semiconductor laser stack device can be reduced, the heat radiation efficiency of the semiconductor laser can be improved, and stable laser light can be output.
- FIG. 1 is a perspective view of a semiconductor laser stack device.
- FIGS. 2A to 2C are exploded perspective views of the heat sink.
- FIG. 3 is an explanatory view of the heat sink as viewed from above.
- FIG. 4 is an explanatory diagram of the heat sink viewed from the side.
- FIG. 5 is a perspective view of a columnar piece.
- FIG. 6 is a diagram showing the relationship between the amount of heat and the wavelength.
- FIG. 7 to 10 are perspective views of the intermediate flat plate member.
- FIG. 11 to FIG. 14 are perspective views of the columnar pieces.
- FIG. 15 is a plan view of the lower flat plate member.
- FIG. 16A and FIG. 16B are exploded perspective views of the lower flat plate member. BEST MODE FOR CARRYING OUT THE INVENTION
- a semiconductor laser hook device according to an embodiment of the present invention will be described with reference to the drawings.
- the semiconductor laser device and the heat sink of the present invention are included in the semiconductor laser stack device according to the present embodiment.
- FIG. 1 is a perspective view of a semiconductor laser stack device according to the present embodiment.
- the semiconductor laser stack device 1 according to the present embodiment includes three semiconductor lasers 2a to 2c, two copper plates 3a and 3b, and two lead plates 4a and 4b. , A supply pipe 5, a discharge pipe 6, four insulating members 7a to 7d, and three heat sinks 10a to 10c.
- each component will be described. For convenience of explanation, the description will be made assuming that the positive direction of the z-axis in FIG. 1 is up and the negative direction of the z-axis is down.
- the semiconductor lasers 2a to 2c are semiconductor lasers having a plurality of laser emission points arranged in a predetermined direction (y-axis direction).
- the semiconductor laser 2a has an upper surface of a heat sink 10a (an upper surface of an upper plate member 16 described later; the same applies hereinafter) and a lower surface of a heat sink 10b (a lower surface of a lower plate member 12 described below; the same applies hereinafter).
- the semiconductor laser 2b is sandwiched between the upper surface of the heat sink 10b and the lower surface of the heat sink 10c, and the semiconductor laser 2c is mounted on the upper surface of the heat sink 10c.
- the semiconductor lasers 2a to 2c are arranged such that the arrangement direction of the laser emission points and the upper surface of the heat sinks 10a to 10c are parallel to each other.
- the outgoing surfaces a to 2c and one side surface of each of the heat sinks 10a to 10c are arranged on substantially the same plane.
- the lower surface of the semiconductor laser 2a is electrically connected to the lead plate 4a via the copper plate 3a
- the upper surface of the semiconductor laser 2c is electrically connected to the lead plate 4b via the copper plate 3b. Connected.
- a voltage between the lead plate 4a and the lead plate 4b it becomes possible to output laser light from the semiconductor lasers 2a to 2c.
- Each of the supply pipe 5 and the discharge pipe 6 is provided to penetrate the heat sinks 10a to 10c. More specifically, the supply pipe 5 is connected to the heat sinks 10 a to 10 c and the supply ports 44 formed therein (details will be described later), and the discharge pipe 6 is connected to the heat sink 10. It is connected to outlets 46 (details will be described later) formed in each of a to l0c. Therefore, cooling from the supply pipe 5 to the heat sinks 10a to 10 A fluid such as water can be supplied, and the cooling water can be discharged from the heat sinks 10 a to 10 c to the discharge pipe 6.
- a fluid such as water
- Lower surface of heat sink 10a, gap between upper surface of heat sink 10a and lower surface of heat sink 10b, gap between upper surface of heat sink 10b and lower surface of heat sink 10c, upper surface of heat sink 10c are provided with rubber insulating members 7a, 7b, 7c, 7d so as to surround the supply pipe 5 and the discharge pipe 6.
- the insulating members 7a to 7d serve to ensure insulation between the heat sinks and prevent leakage of cooling water.
- the heat sinks 10a to 10c have the following configuration. Since the heat sinks 10a to 10c have the same configuration, only the heat sink 10a will be described below.
- 2A to 2C are exploded perspective views of the heat sink 10a, FIG. 3 is an explanatory view of the heat sink 10a viewed from above, and FIG. 4 is a view of the heat sink 10a viewed from the side.
- FIG. 3 is an explanatory view of the heat sink 10a viewed from above
- FIG. 4 is a view of the heat sink 10a viewed from the side.
- the heat sink 10 includes a lower plate member 12 (first plate member), an intermediate plate member 14 (partition plate), and an upper plate member 16 (second plate member). Are formed by sequentially laminating the flat plate-like members) and bonding the contact surfaces by diffusion bonding, brazing or using an adhesive.
- the lower flat plate member 12 is a copper flat plate having a thickness of about 400 ⁇ m, and has two through holes 18 and 20.
- a supply water channel groove 22 (first groove portion) having a depth of about 200 zm is formed.
- One end of the supply channel groove 22 is connected to the through hole 18, and the other end is expanded in the width direction of the lower flat plate member 12 (y-axis direction in FIG. 1). I have.
- the supply channel groove 22 has a rounded corner 22a in order to reduce the flow resistance of the cooling water flowing in the heat sink 10a and reduce stagnation.
- the supply channel groove 22 is located in the thickness direction of the lower flat plate member 12 (z-axis direction in Fig. 1).
- a plurality of extending columnar pieces (first connecting members) 24 are provided.
- the columnar piece 24 is a copper columnar member having one end face fixed to the supply channel groove 22 and having an elliptical cross section and a height of about 200 as shown in FIG.
- the supply channel groove 22 and the columnar piece 24 are simultaneously formed by etching, and the supply channel groove 22 is formed by etching. After that, a separately manufactured columnar piece 24 may be bonded.
- the upper flat plate member 16 is also a copper flat plate having a thickness of about 400 m, and has two through holes 2 6, at positions corresponding to the through holes 18, 20 of the lower flat plate member 12. It has 2 8.
- a drain channel groove 30 (second groove) having a depth of about 200 zm is formed on the lower surface (the surface in contact with the intermediate flat plate member 14) of the upper flat plate member 16.
- One end of the drainage channel groove 30 is connected to the through hole 28, and the other end of the groove 30 extends in the width direction of the upper flat plate member 16.
- at least a part of the drainage channel groove 30 is formed in a portion (hatched portion in FIG. 3) overlapping with the supply channel groove 22 formed in the lower flat plate member 12.
- the corners 30a of the discharge water channel groove 30 have a curved surface shape in order to reduce the flow resistance of the cooling water flowing in the heat sink 10a and reduce stagnation.
- a plurality of columnar pieces (second connecting members) 32 extending in the thickness direction of the upper flat plate member 16 are provided in the drainage channel groove portion 30.
- the columnar piece 32 is a copper columnar member having one end face fixed to the drainage channel section 30 and having an elliptical cross section as shown in FIG. 5 and a height of about 200 m.
- the method for forming the drainage channel groove 30 and the columnar piece 32 is the same as the method for forming the supply waterway groove 22 and the columnar piece 24 described above.
- the intermediate flat plate member 14 is a copper flat plate having a thickness of about 100 m, and has two through holes 3 4, at positions corresponding to the through holes 18, 20 of the lower flat plate member 12. Has 3 6 Also, the water supply channel groove 22 formed in the lower flat plate member 12 and the upper A plurality of water guide holes 38 are formed in a portion of the side plate member 16 that overlaps the drainage channel groove 30.
- the cross section of the water guide hole 38 is substantially circular, and the water guide hole 38 is formed by etching the intermediate plate member 14 from both sides.
- the upper surface of the upper flat plate member 16 has a semiconductor laser mounting area 100 on which the semiconductor laser 2a as a heating element to be cooled is mounted. Is provided at a position facing the semiconductor laser mounting area 100. That is, since the semiconductor laser 2a has a substantially rectangular parallelepiped shape, the semiconductor laser mounting area 100 has a rectangular shape, and the plurality of water guide holes 38 have a rectangular longitudinal direction (FIG. 1). (In the y-axis direction).
- the supply water channel 40 (first space) to which the cooling water is supplied is formed by the supply water channel groove 22 formed in the flat plate member 12 and the lower surface of the intermediate flat plate member 14.
- the upper flat plate member A discharge water channel 42 (second space) for discharging the cooling water is formed by the discharge water channel groove 30 formed in 16 and the upper surface of the intermediate flat plate member 14.
- the water guide hole 38 has a sufficiently small cross-sectional area for jetting the cooling water supplied to the supply water channel 40 to the discharge water channel 42.
- the columnar piece 24 has a height equal to the depth of the supply channel groove 22, the end face opposite to the end face fixed to the supply channel groove 22 has an intermediate flat plate member 1. Glued to 4. As a result, the columnar piece 24 connects the bottom surface of the supply water channel groove 22 and the lower surface of the intermediate flat plate member 14. Similarly, the columnar piece 32 connects the bottom surface of the drainage channel groove 30 and the upper surface of the intermediate flat plate member 14.
- the through-hole 18 formed in the lower flat plate member 12, the through-hole 34 formed in the intermediate flat plate member 14, and the through-hole 26 formed in the upper flat plate member 16 are connected to each other to supply water.
- a supply port 44 for supplying cooling water to 40 is formed and formed in the lower flat plate member 12.
- the through hole 20, the through hole 36 formed in the intermediate flat plate member 14, and the through hole 28 formed in the upper flat plate member 16 are connected to each other to discharge the cooling water from the discharge water channel 42.
- the cross section of the columnar piece 24 has a length in a direction (first direction) from the supply port 44 to the water guide hole 38 in a direction (second direction) substantially perpendicular to the direction. It is longer than it is.
- the cross section of the columnar piece 32 has a length in a direction (third direction) from the headrace hole 38 to the discharge port 46 (third direction), which is longer than a length in a direction substantially perpendicular to the direction (fourth direction). It is getting longer.
- the columnar pieces 24a and the columnar pieces 32a arranged at the portion where the supply channel 40 and the discharge channel 42 overlap are arranged at positions overlapping each other.
- the heat sinks 10 a to 10 c are configured by three flat plate members including a lower flat plate member 12, an intermediate flat plate member 14, and an upper flat plate member 16. Therefore, the heat sinks 10a to 10c can be made extremely thin, and as a result, the semiconductor laser stack device 1 can be made extremely small.
- the thickness of the intermediate flat plate member 14 that separates the supply water passage 40 and the discharge water passage 42 is approximately 100 m, and the lower flat plate member 12 has a portion where the supply water passage groove 22 is formed. Since the thickness is extremely thin, about 200 ⁇ m, this force mainly appears as a pressing force that presses the inner wall of the supply channel 40 in the vertical direction (the z-axis direction in Fig. 1).
- the columnar pieces 24 provided in the supply water channel 40 are piled at the above pressing force and pull the inner wall of the water supply channel 40 to prevent the deformation of the water supply channel 40. Therefore, the efficiency of cooling water in the supply water channel 40 is improved, and the heat radiation efficiency of the semiconductor lasers 2a to 2c is improved. As a result, stable laser light can be output from the semiconductor lasers 2a to 2c. It becomes possible.
- the discharge channel 42 is formed above the supply channel 40 via the intermediate plate member 14, and the thickness of the intermediate plate member 14 that separates the supply channel 40 from the discharge channel 42 is approximately Extremely thin, 100 m. Therefore, the discharge water channel 42 is pushed by the supply water channel 40, and a compressive force is generated to compress the discharge water channel 42 in the vertical direction (the z-axis direction in FIG. 1).
- the columnar piece 32 provided in the discharge water channel 42 presses the inner wall of the discharge water channel 42 from the inside against the above-mentioned compressive force, and prevents the deformation water channel 42 from being deformed. Therefore, the efficiency of cooling water in the discharge channel 40 is improved, and the heat radiation efficiency of the semiconductor lasers 2a to 2c is improved. As a result, stable laser light can be output from the semiconductor lasers 2a to 2c.
- the heat sinks 10a to 10c themselves are also prevented from being deformed. Therefore, the degree of adhesion between the semiconductor lasers 2a to 2c to be cooled and the heat sinks 10a to 10c increases, and the heat radiation efficiency of the semiconductor lasers 2a to 2c improves. As a result, it is possible to output stable laser light from the semiconductor lasers 2a to 2c.
- FIG. 6 shows a case where a heat sink 10 a to 10 c having the columnar pieces 24 and 32 (this embodiment) and a heat sink without the columnar pieces 24 and 32 (comparative example) are used, respectively.
- 5 is a graph showing the relationship between the amount of heat output from the semiconductor lasers 2a to 2c and the peak wavelength of the laser light output from the semiconductor lasers 2a to 2c.
- 0.201 / min cooling water supplied to each heat sink.
- the heat sinks 10 a to 10 c having the columnar pieces 24 and 32 are different from the heat sinks having no columnar pieces 24 and 32 in that the semiconductor lasers 2 a to Even if the amount of heat output from 2c increases, the change in the peak wavelength of the laser light output from semiconductor lasers 2a to 2c is small, and a stable laser light can be output. .
- the heat sinks 10a to 10c can be arranged in a predetermined direction. Even when the semiconductor lasers 2a to 2c having a plurality of laser emission points arranged in a row are mounted, it is possible to easily position the light emission points and to increase the optical coupling efficiency with an externally provided optical system. Become. Further, since the rigidity of the heat sink 10 increases, the heat sink 10 can be further reduced in size and thickness.
- the heat sinks 10 a to 10 c are formed with grooves such as a groove 22 for a supply channel and a groove 30 for a drain channel, and a channel 38.
- Manufacture is possible by relatively simple steps such as formation of holes, and manufacture is relatively easy. As a result, the manufacture of the semiconductor laser stack device 1 becomes relatively easy.
- the semiconductor laser stack device 1 is provided with a plurality of columnar pieces 24 or a plurality of columnar pieces 32 in the heat sinks 10a to 10c, whereby the supply channel 40 or the discharge channel 40 is deformed. Can be more efficiently prevented, and the heat radiation efficiency of the semiconductor lasers 2a to 2c can be further improved. As a result, extremely stable laser light can be output from the semiconductor lasers 2a to 2c. Further, in the semiconductor laser stack device 1 according to the present embodiment, in the heat sinks 10a to 10c, the cross section of the columnar piece 24 or the columnar piece 32 is substantially elliptical, and the major axis thereof is directed in a fixed direction.
- the semiconductor laser stack device 1 includes, in the heat sinks 10a to 10c, a columnar piece 24a and a columnar piece 3 that are arranged in a portion where the supply water channel 40 and the discharge water channel 42 overlap. 2a are arranged at positions overlapping each other, so that the columnar piece 24a and the columnar piece 32a can jointly oppose the pressing force and the compressive force.
- the ability of the waterway 40 and the discharge waterway 42 to prevent deformation is increased.
- the semiconductor lasers 2a to 2a- The radiation efficiency of 2c can be improved, and more stable laser light can be output from the semiconductor lasers 2a to 2c.
- the semiconductor laser stack device 1 should be cooled by providing the water guide holes 38 at positions facing the semiconductor laser mounting region 100 in the heat sinks 10a to 10c.
- the semiconductor lasers 2a to 2c can be effectively cooled. As a result, stable laser light can be output from the semiconductor lasers 2a to 2c.
- the semiconductor laser stack device 1 has a plurality of water guide holes 38 in the heat sinks 10a to 10c. As a result, the semiconductor lasers 2a to 2c can be uniformly and widely cooled. As a result, it is possible to output a spatially uniform laser beam.
- the water conduction holes 38 of the heat sinks 10a to 10c are used for ejecting the cooling water supplied to the supply water channel 40 to the discharge water channel 42. It has a sufficiently small cross-sectional area. Therefore, the boundary layer on the inner wall of the drainage channel 42 can be broken, and the cooling efficiency of the semiconductor lasers 2a to 2c increases. As a result, it is possible to output a more stable laser beam from the semiconductor lasers 2a to 2c.
- the semiconductor laser stack device 1 has one supply pipe 5 connected to the supply ports 44 of the heat sinks 10a to 10c, and the heat sinks 10a to 10c, respectively.
- the discharge pipe 6 connected to the discharge port 4 6 of the other, the other connection pipe connecting the supply pipe 5 and the supply port 4 4 or the discharge pipe 6 and the discharge port 4 6
- Other connecting pipes and the like to be connected are not required, and the size can be further reduced.
- the plurality of water guide holes 38 are formed so as to be arranged in a line in the longitudinal direction of the semiconductor laser mounting region 100.
- Fig. 7 It may be formed so as to be arranged in two rows with respect to the longitudinal direction of the laser mounting area 100 c.
- a slit extending in the short direction of the semiconductor laser mounting area 100 May be formed so as to be arranged in a line in the longitudinal direction of the semiconductor laser mounting area 100.
- one slit-shaped water guide hole 38 extending in the longitudinal direction of the semiconductor laser mounting area 100 may be formed as shown in FIG. 9, and two slit-shaped water guide holes 38 may be formed as shown in FIG. It may be.
- the columnar pieces 24 and 32 are columnar members having an elliptical cross section, but have a columnar shape as shown in FIG. 11. It may be a member. By using the columnar pieces 24, 32 as cylindrical members, the columnar pieces 24, 32 can be easily formed, and the columnar pieces 24, 32 can be used for the water supply channel 40 and the discharge water channel 42. It is not necessary to consider the orientation at the time of arrangement. Further, the columnar pieces 24 and 32 may be columnar members having a streamlined cross section such as a blade shape as shown in FIG. 12 and a teardrop shape as shown in FIG. By making the columnar pieces 24 and 32 have such a shape, the flow resistance of the cooling water can be further reduced.
- the columnar pieces 24 and 32 may be plate members as shown in FIG. By forming the columnar pieces 24 and 32 as plate-like members, the columnar pieces 24 and 32 can be easily formed.
- the columnar pieces 24 have the same shape, but for example, a semiconductor laser having a length of about lcm
- the shape (including surface shape), size, and arrangement of the columnar pieces 24 are adjusted so that the pressure loss of the flow path from the supply port 44 to the water introduction hole 38 becomes uniform. Etc. can be adjusted as appropriate.
- the columnar pieces 24 b arranged in the portion where the flow path length from the supply port 44 to the water introduction hole 38 is short have a size of
- the columnar piece 24c which is large and has an elliptical cross section close to a perfect circle, and which is arranged in a portion where the flow path length from the supply port 44 to the water introduction hole 38 is long (flow path C), has a size Small and narrow cross section It shall be a long ellipse.
- the pressure loss of A, B, C becomes uniform.
- the semiconductor laser is cooled uniformly, the wavelength unevenness and the output unevenness are eliminated, and the reliability is improved.
- the density of the columnar pieces 24 decreases as going from the flow path A to C, and the surface of the columnar pieces 24 becomes smoother as going from the flow path A to C.
- the columnar pieces 24 and 32 are formed on the lower flat plate member 12 and the upper flat plate member 16, respectively. It may be formed.
- the supply channel groove 22 of the lower flat plate member 12 is formed by etching the upper surface of the lower flat plate member 12.
- the first flat plate 12a having a hole 12c forming the side surface of the supply channel groove 22 and the supply channel groove are formed. It may be formed by overlapping and bonding the second flat plate 12 b forming the bottom surface of the second plate 22. In this case, the columnar pieces 24 are separately manufactured and adhered to the bottom surfaces of the supply channel grooves 22.
- the upper flat plate member 16 can also be formed by laminating and bonding two flat plates in the same manner as described above. Industrial applicability
- the present invention can be used as a semiconductor laser device and a semiconductor laser stack device used as a light source, and as a heat sink used for heat radiation of a heating element such as a semiconductor device.
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Semiconductor Lasers (AREA)
- Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU31697/99A AU3169799A (en) | 1998-08-18 | 1999-04-13 | Heat sink, and semiconductor laser and semiconductor laser stacker using the same |
DE69936226T DE69936226T2 (de) | 1998-08-18 | 1999-04-13 | Kühlkörper, und halbleiterlaservorrichtung mit einem solchen kühlkörper |
EP99913655A EP1143779B1 (en) | 1998-08-18 | 1999-04-13 | Heat sink and semiconductor laser apparatus using the same |
US09/773,509 US6895026B2 (en) | 1998-08-18 | 2001-02-02 | Heat sink and semiconductor laser apparatus and semiconductor laser stack apparatus using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP23157598 | 1998-08-18 | ||
JP10/231575 | 1998-08-18 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/773,509 Continuation-In-Part US6895026B2 (en) | 1998-08-18 | 2001-02-02 | Heat sink and semiconductor laser apparatus and semiconductor laser stack apparatus using the same |
Publications (1)
Publication Number | Publication Date |
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WO2000011922A1 true WO2000011922A1 (en) | 2000-03-02 |
Family
ID=16925677
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1999/001968 WO2000011922A1 (en) | 1998-08-18 | 1999-04-13 | Heat sink, and semiconductor laser and semiconductor laser stacker using the same |
Country Status (5)
Country | Link |
---|---|
US (1) | US6895026B2 (ja) |
EP (1) | EP1143779B1 (ja) |
AU (1) | AU3169799A (ja) |
DE (1) | DE69936226T2 (ja) |
WO (1) | WO2000011922A1 (ja) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2005268305A (ja) * | 2004-03-16 | 2005-09-29 | Mitsubishi Electric Corp | ヒートシンク |
US7161806B2 (en) | 2003-09-18 | 2007-01-09 | Fuji Electric Systems Co., Ltd. | Heat sink and method for its production |
JP2008277364A (ja) * | 2007-04-26 | 2008-11-13 | Shindengen Electric Mfg Co Ltd | 電気回路装置の冷却構造 |
US7567598B2 (en) | 2004-03-17 | 2009-07-28 | Hamamatsu Photonics K.K. | Semiconductor laser equipment |
JP2009176871A (ja) * | 2008-01-23 | 2009-08-06 | Mitsubishi Electric Corp | ヒートシンクおよび電気機器 |
US7885299B2 (en) | 2004-03-17 | 2011-02-08 | Hamamatsu Photonics K.K. | Semiconductor laser equipment |
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Cited By (10)
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US7161806B2 (en) | 2003-09-18 | 2007-01-09 | Fuji Electric Systems Co., Ltd. | Heat sink and method for its production |
US7371615B2 (en) | 2003-09-18 | 2008-05-13 | Fuji Electric Systems, Co., Ltd. | Heat sink and method for its production |
JP2005268305A (ja) * | 2004-03-16 | 2005-09-29 | Mitsubishi Electric Corp | ヒートシンク |
JP4522725B2 (ja) * | 2004-03-16 | 2010-08-11 | 三菱電機株式会社 | ヒートシンク |
US7567598B2 (en) | 2004-03-17 | 2009-07-28 | Hamamatsu Photonics K.K. | Semiconductor laser equipment |
US7885299B2 (en) | 2004-03-17 | 2011-02-08 | Hamamatsu Photonics K.K. | Semiconductor laser equipment |
JP2008277364A (ja) * | 2007-04-26 | 2008-11-13 | Shindengen Electric Mfg Co Ltd | 電気回路装置の冷却構造 |
JP2009176871A (ja) * | 2008-01-23 | 2009-08-06 | Mitsubishi Electric Corp | ヒートシンクおよび電気機器 |
JP2012168216A (ja) * | 2011-02-10 | 2012-09-06 | Ricoh Co Ltd | 熱交換装置及び画像形成装置 |
JP2012198502A (ja) * | 2011-03-07 | 2012-10-18 | Ricoh Co Ltd | 熱交換装置及び画像形成装置 |
Also Published As
Publication number | Publication date |
---|---|
DE69936226D1 (de) | 2007-07-12 |
US20010004370A1 (en) | 2001-06-21 |
EP1143779A1 (en) | 2001-10-10 |
EP1143779B1 (en) | 2007-05-30 |
EP1143779A4 (en) | 2003-02-05 |
US6895026B2 (en) | 2005-05-17 |
DE69936226T2 (de) | 2008-01-24 |
AU3169799A (en) | 2000-03-14 |
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