WO2009081470A1 - レーザ光源モジュール - Google Patents
レーザ光源モジュール Download PDFInfo
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- WO2009081470A1 WO2009081470A1 PCT/JP2007/074689 JP2007074689W WO2009081470A1 WO 2009081470 A1 WO2009081470 A1 WO 2009081470A1 JP 2007074689 W JP2007074689 W JP 2007074689W WO 2009081470 A1 WO2009081470 A1 WO 2009081470A1
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- WIPO (PCT)
- Prior art keywords
- lead frame
- semiconductor laser
- laser array
- light source
- source module
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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
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/023—Mount members, e.g. sub-mount members
- H01S5/02315—Support members, e.g. bases or carriers
-
- 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
- H01S5/0233—Mounting configuration of laser chips
- H01S5/0234—Up-side down mountings, e.g. Flip-chip, epi-side down mountings or junction down mountings
-
- 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
- H01S5/0233—Mounting configuration of laser chips
- H01S5/02345—Wire-bonding
-
- 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
- H01S5/02355—Fixing laser chips on mounts
- H01S5/0237—Fixing laser chips on mounts by soldering
-
- 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
- H01S5/02476—Heat spreaders, i.e. improving heat flow between laser chip and heat dissipating elements
- H01S5/02492—CuW heat spreaders
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/49—Structure, shape, material or disposition of the wire connectors after the connecting process of a plurality of wire connectors
- H01L2224/491—Disposition
- H01L2224/4912—Layout
- H01L2224/49175—Parallel arrangements
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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
- H01S5/00—Semiconductor lasers
- H01S5/02—Structural details or components not essential to laser action
- H01S5/022—Mountings; Housings
- H01S5/02208—Mountings; Housings characterised by the shape of the housings
- H01S5/02212—Can-type, e.g. TO-CAN housings with emission along or parallel to symmetry axis
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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
- 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
Definitions
- the present invention relates to a laser light source module equipped with a semiconductor laser array in which a plurality of semiconductor laser elements are arranged in an array, and particularly relates to reduction of power consumption of the module and reduction of stress applied to the laser element. Is.
- the laser light source module described above includes a plurality of semiconductor laser arrays arranged in a direction perpendicular to the optical axis of the laser beam, a submount substrate made of an insulating material and formed with a feed circuit pattern, and a thermal conductivity of copper or the like. It is composed of a heat sink made of a high material and a stem in which a plurality of power supply lead pins are arranged upright.
- the semiconductor laser array is mounted on the submount substrate, the submount substrate is mounted on the heat sink, and the heat sink is mounted on the stem.
- the lead pin and the submount substrate, the submount substrate and the array semiconductor laser element are electrically bonded by a method such as wire bonding or solder bonding, respectively, and a current is applied to the lead pin, thereby driving the semiconductor laser array.
- Laser light can be output.
- the laser element is stressed when driven and temperature rises due to the difference in coefficient of linear expansion from the mounted submount substrate.
- the element size is larger than that of a single laser element, and the stress acting on each laser element is also relatively large.
- the oscillation wavelength of the laser element changes depending on the temperature and the reliability decreases at a high temperature, it is desirable to make the temperature in the semiconductor laser array as uniform as possible at an appropriate temperature.
- Patent Documents 1 and 2 propose a structure in which a CuW plate member is interposed between a semiconductor laser array and a water cooling structure.
- a submount material is CuW, and a plate member made of copper (hereinafter referred to as Cu) serving as an insulating substrate and a power feeding path, and a semiconductor laser array are mounted on the submount,
- Cu a plate member made of copper
- an electrode of a semiconductor laser array and a power supply path are electrically joined by wire bonding.
- the laser light source module having such a structure by using a CuW submount having a low electrical resistance and a Cu plate member as a power supply path, even when a large current is passed, the power consumption and the heat generation amount of the power supply path can be reduced. it can.
- a power feed path is configured by a circuit pattern formed by a method such as vapor deposition or plating on a submount of an insulating material.
- a heat sink such as CuW
- the stress applied to the semiconductor laser array is reduced, but the amount of heat generated in the power supply path increases. Therefore, it was necessary to take measures to increase the cooling capacity of the module. Further, since the power consumption in the power supply path is increased, there is a problem that the power consumption of the module is increased.
- the insulating plate and the Cu plate are stacked and mounted on the submount, and the semiconductor laser array is mounted in parallel with them.
- the thickness of a semiconductor laser array is about 0.1 mm
- the thickness of an insulating plate material such as aluminum nitride (hereinafter referred to as AlN) or silicon carbide (hereinafter referred to as SiC) is 0.1 to 1.0 mm. Therefore, when they are mounted on a CuW plate material, the upper surface height of the insulating plate is higher than the height of the upper surface of the semiconductor laser array.
- the semiconductor laser array is caused by head interference. As a result, the solder for joining the semiconductor laser array is melted by heating when mounting the insulating plate and the Cu plate, and the semiconductor laser is melted. There was also a problem that the mounting position of the user array was shifted.
- the laser light source module mounted in the CAN package which has a small mounting area and is suitable for high precision and high output applications, has been required to further reduce the space compared to the one mounted in the butterfly package.
- the present invention has been made to solve the above-described problems, and can reduce the stress applied to the semiconductor laser array and reduce the amount of heat generated in a space-saving manner.
- the laser light source suitable for mounting on a CAN package The purpose is to provide modules.
- a laser light source module is a laser light source module including a semiconductor laser array in which a plurality of semiconductor laser elements are arranged in an array.
- It is made of a material having excellent conductivity, and is arranged side by side with the first lead frame on the submount substrate, constitutes a power feeding path of the semiconductor laser array, and is electrically joined to the other lead pins for power feeding. And a second lead frame, and a wire for electrically joining the semiconductor laser array and the second lead frame.
- the submount substrate made of a material having excellent insulating properties, it is composed of a material having excellent electrical conductivity and thermal conductivity and having a linear expansion coefficient comparable to that of a semiconductor laser array.
- the first lead frame and the second lead frame made of a material having excellent electrical conductivity are mounted side by side, and the semiconductor laser array is mounted on the first lead frame, and the first lead frame and the second lead are mounted.
- the effect of reducing the stress applied to the semiconductor laser array due to the difference in linear expansion coefficient between the semiconductor laser array and the submount substrate accompanying the rise in module temperature, on the submount substrate Compared to the case of vapor-deposited circuit patterns, the effect of reducing the power consumption generated in the feed path, and the semiconductor laser array
- the effect of equalizing the amount of heat generated in 7 can be achieved simultaneously.
- FIG. 1 is a perspective view of Embodiment 1 of a laser light source module according to the present invention.
- FIG. 2 is a front view of a main part of the laser light source module according to the first embodiment.
- FIG. 3 is a side view in which a part of the laser light source module according to the first embodiment viewed from the side surface is shown in cross section.
- FIG. 4 is a cross-sectional view of the main part for explaining the thickness relationship between the members of the laser light source module of the first embodiment.
- FIG. 5 is a perspective view of Embodiment 2 of the laser light source module according to the present invention.
- FIG. 1 is a perspective view of a laser light source module according to Embodiment 1 of the present invention.
- a laser light source module 100 according to the present embodiment is made of a stem 1, two pairs of power supply lead pins 2A, 2A, 2B, and 2B erected on the stem 1, and a material having excellent thermal conductivity.
- the laser light source module 100 is mounted on the submount substrate 4, the semiconductor laser array 7 is mounted on the upper surface, and either the positive or negative electrode of the semiconductor laser array 7 is connected, A second lead frame 6 that is arranged on the submount substrate 4 along with the first lead frame 5 and to which the other electrode of the semiconductor laser array 7 is connected, and the semiconductor laser array 7 and the second lead frame 6 are electrically connected. And a wire 8 to be joined.
- the first lead frame 5 is made of a material having excellent electrical conductivity and thermal conductivity and having a linear expansion coefficient comparable to that of the semiconductor laser array 7.
- the first lead frame 5 is mounted with the semiconductor laser array 7 and is fed with power to the semiconductor laser array 7. Configure the road.
- the second lead frame 6 is made of a material having excellent electrical conductivity and thermal conductivity, and constitutes a power supply path for the semiconductor laser array 7.
- the stem 1 is a plate-like member made of a metal material, and power supply lead pins 2A, 2A, 2B, and 2B serving as power supply lines to the semiconductor laser array 7 are fixed by glass sealing.
- the heat sink 3 is mounted and fixed to the stem 1 by a method such as soldering.
- a submount substrate 4 made of a material having excellent insulating properties such as AlN and SiC on the upper surface of the heat sink 3 and having an electric circuit pattern formed on the upper surface is mounted and fixed by a method such as soldering.
- the first lead frame 5 and the second lead frame 6 are mounted on the circuit pattern formed on the submount substrate 4.
- the first lead frame 5 is made of a material such as CuW, which has a linear expansion coefficient close to that of gallium arsenide (hereinafter, GaAs), which is a material of the semiconductor laser array 7, and has a high thermal conductivity and a low electrical resistance.
- GaAs gallium arsenide
- the first lead frame 5 has a shape in which a flat plate is bent into a U-shape, a main portion 5a having a main surface fixed to the submount substrate 4, and a main portion 5a bent at right angles from both ends. It is comprised from the bending parts 5b and 5c to stand.
- the bent portions 5b and 5c are electrically and mechanically joined to the power supply lead pins 2A and 2A by a method such as soldering.
- the second lead frame 6 is made of a material such as Cu having high thermal conductivity and low electrical resistance. Like the first lead frame 5, the second lead frame 6 is formed by bending a flat plate into a U-shape. The main surface is composed of a flat plate-like main portion 6a fixed to the submount substrate 4, and bent portions 6b and 6c that are bent at right angles from both ends of the main portion 6a. The second lead frame 6 is electrically and mechanically joined to the power supply lead pins 2B and 2B by soldering the bent portions 6b and 6c.
- the semiconductor laser array 7 has a structure in which a plurality of semiconductor laser elements are arranged in parallel, and has electrodes on the upper and lower surfaces.
- the bottom electrode of the semiconductor laser array 7 is electrically and mechanically connected to the first lead frame 5 by a method such as soldering so that the light emission direction is opposite to the stem 1.
- the upper electrode of the semiconductor laser array 7 is electrically connected to the second lead frame 6 by a method such as wire bonding using a wire 8 made of a material such as gold (hereinafter referred to as Au). .
- the thicknesses of the first lead frame 5 and the second lead frame 6 are selected so as to satisfy the following formulas.
- FIG. 2 is a front view of the main part of the laser light source module 100 of the present embodiment.
- the second lead frame 6 and the lead pins 2B are omitted.
- the semiconductor laser array 7 generates heat.
- components other than the semiconductor laser array 7 included in the power supply path also generate heat according to their electric resistance value and current value. As a result, the temperature rises particularly for the parts serving as the power supply path as compared to before power supply.
- the semiconductor laser array 7 is made of GaAs
- the first lead frame 5 is made of CuW
- the submount substrate 4 is made of AlN
- the heat sink 3 is made of Cu.
- the semiconductor laser array 7, the first lead frame 5, and the submount substrate 4 tend to expand or contract due to temperature fluctuations.
- Expansion amount ⁇ X ⁇ ⁇ ⁇ T ⁇ L of the semiconductor laser array 7
- ⁇ Y ⁇ ⁇ ⁇ T ⁇ L
- the expansion amounts of the semiconductor laser array 7 and the first lead frame 5 have a difference ⁇ Y ⁇ X corresponding to the linear expansion coefficient of the material, a shear stress is generated at the material joint, and the material itself is Also, tensile or compressive stress is applied.
- a high stress is applied to the semiconductor laser, a transition occurs in the semiconductor laser substrate during operation, and the phenomenon that the output decreases by reaching the active layer (DLD: Dark Line Defective) occurs, or due to the progress of cracks, etc. A phenomenon occurs in which the semiconductor laser substrate is broken.
- DLD Dark Line Defective
- the semiconductor laser array is directly bonded on the submount substrate. Therefore, when the expansion amount of the submount substrate is ⁇ Z, the constituent material of the submount substrate is The difference between the linear expansion coefficient of AlN and the linear expansion coefficient of GaAs, which is a constituent material of the semiconductor laser array 7, is larger than that of CuW. As a result, the difference ⁇ Z ⁇ X in the expansion amount when the temperature fluctuates also increases, so that the laser light source module 100 of this embodiment has a smaller stress applied compared to the conventional semiconductor laser array. As a result, DLD and crack progress are less likely to occur, and reliability is improved.
- FIG. 3 is a schematic diagram with a part of the laser light source module 100 according to the present embodiment as seen from the side direction showing the state of bonding.
- the semiconductor laser array 7 is electrically and mechanically joined to the first lead frame 5 with solder or the like.
- the first lead frame 5 and the second lead frame 6 are mechanically joined to the submount substrate 4 by soldering or the like.
- these devices are generally joined by an apparatus called a die bonder such as work handling and heating, and supply of solder or the like as a die bond material.
- a die bonder such as work handling and heating
- solder or the like as a die bond material.
- the outer shape of the bonding head 11 is larger than the chip size. Therefore, if there is an object in the vicinity of the workpiece that is the same as or higher than the workpiece height, have a finger in the pie.
- the plate thickness of the first lead frame 5 is a
- the plate thickness of the second lead frame 6 is b
- the plate thickness of the semiconductor laser array 7 is c
- a ⁇ b Since the thickness satisfies ⁇ a + c, mounting the first lead frame 5, the second lead frame 6, and the semiconductor laser array 7 in this order causes interference between the bonding head 11 and the workpiece even when a general-purpose head is used.
- the first lead frame 5, the second lead frame 6, and the semiconductor laser array 7 can be mounted without any problem.
- the semiconductor laser array 7 can be mounted last, solder melting due to heating at the time of mounting and the accompanying mounting position shift do not occur, and the mounting accuracy of the semiconductor laser array 7 can be improved.
- FIG. 4 is a cross-sectional view of the main part viewed from the side surface for explaining the relationship of the thickness between each member of the laser light source module 100 of the present embodiment.
- the first lead frame 5 and the second lead frame 6 are mounted on the submount substrate 4 as power feeding paths, respectively, and the semiconductor laser array 7 is mounted on the first lead frame 5. Since the height position of the upper surface (electrode surface) of the laser array 7 and the upper surface of the second lead frame 6 can be made substantially equal, the length of the wire 8 can be shortened, and as a result, the laser light source module 100 is supplied with current. It is possible to reduce the power consumption in the wire 8 when the load is applied.
- the electrical conductivity and thermal conductivity such as CuW are excellent on the submount substrate 4 made of a material having excellent insulating properties, and the same level as the semiconductor laser array 7.
- a first lead frame 5 made of a material having a linear expansion coefficient and a second lead frame 6 made of a material having excellent electrical conductivity such as Cu are mounted side by side, and further, a semiconductor laser is mounted on the first lead frame 5
- the effect of reducing the stress applied to the semiconductor laser array 7 by the power supply compared with the circuit pattern deposited on the submount substrate 4 In effect of reducing the power consumption generated, and at the same time to realize the effect of equalizing the amount of heat generated in the semiconductor laser array 7.
- the power feeding path has a large cross-sectional area as compared with a circuit pattern formed by a general method such as vapor deposition or plating.
- the power supply path has a small electric resistance, even when a large current is supplied, the power consumption and the heat generation amount in the power supply path can be reduced.
- the first lead frame 5 on which the semiconductor laser array 7 is mounted is made of a material having a linear expansion coefficient such as CuW made of the same material as that of the semiconductor laser array 7, so that the stress value applied to the semiconductor laser array 7 is set. Can be reduced.
- the first lead frame 5 is also a material having high thermal conductivity, the heat generated from the semiconductor laser array 7 can be diffused to make the temperature distribution uniform, and the oscillation wavelength and oscillation efficiency of each emitter of the semiconductor laser array 7 can be improved. A stable output with no variation can be obtained.
- the relationship between the plate thickness a of the first lead frame 5, the plate thickness b of the second lead frame 6, and the substrate thickness c of the semiconductor laser array 7 is selected to satisfy a ⁇ b ⁇ a + c.
- a general-purpose bonder is used.
- the bonder pickup tool does not interfere with other members previously mounted. Mounting becomes easy.
- the semiconductor laser array 7 can be mounted last, the mounting position of the semiconductor laser array 7 does not shift due to heating after mounting the semiconductor laser array 7, and only one heating is required. The reliability of the laser array 7 is improved.
- the difference in height position between the upper surface electrode of the semiconductor laser array 7 and the upper surface of the second lead frame 6 is set so that the relation of the respective plate thicknesses is b ⁇ a + c.
- the size can be reduced compared to the case where the second lead frame 6 is not provided.
- the upper electrode of the semiconductor laser array 7 and the upper surface of the second lead frame 6 are electrically connected by wire bonding, the length of the wire can be shortened as the difference in height position is small, and the electric resistance value is reduced. As a result, power consumption can be reduced.
- the lead pins 2 are positioned above the semiconductor laser array 7, the first lead frame 5 and the second lead frame 6 are U-shaped, but the lead pins are positioned at the semiconductor laser array.
- the lead frame may be processed into a shape other than the U-shape, or may be used as a plate shape without being processed.
- FIG. FIG. 5 is a perspective view of Embodiment 2 of the laser light source module according to the present invention.
- the first lead frame 5B and the second lead frame 6B have a plate shape instead of a U-shape.
- the first lead frame 5B and the second lead frame 6B and the lead pin 2 are electrically joined by ribbons 9a, 9b, 9c, 9d.
- Other configurations are the same as those of the first embodiment, and the description of the configurations given the same numbers is omitted.
- first lead frame 5B and the second lead frame 6B and the lead pin 2 are joined by the ribbon 9 or the like, they are electrically connected regardless of the mounting accuracy of the first lead frame 5B and the second lead frame 6B. Can be joined together. Thereby, productivity improves.
- Embodiment 1 and the configuration shown in Embodiment 2 may be applied in combination in two power supply paths.
- the laser light source module according to the present invention is useful when applied to a laser light source module that requires space saving, and is particularly suitable when applied to a laser light source module mounted on a CAN package. Is.
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- Semiconductor Lasers (AREA)
Abstract
Description
2A,2B 給電用リードピン
3 ヒートシンク
4 サブマウント基板
5,5B 第1リードフレーム
6,6B 第2リードフレーム
7 半導体レーザアレイ
8 ワイヤ
9 リボン
11 ダイボンダヘッド
100,101 レーザ光源モジュール
図1は本発明に係るレーザ光源モジュールの実施の形態1の斜視図である。図1において、本実施の形態のレーザ光源モジュール100は、ステム1と、ステム1に立設された2対の給電用リードピン2A,2A,2B,2Bと、熱伝導性に優れた材料で作製されステム1上に実装されたヒートシンク3と、絶縁性に優れた材料で作製されヒートシンク3上に実装されたサブマウント基板4とを有する。
a:第1リードフレーム5の板厚
b:第2リードフレーム6の板厚
c:半導体レーザアレイ7の板厚
第1リードフレーム5の膨張量△Y=β×△T×L
図5は本発明に係るレーザ光源モジュールの実施の形態2の斜視図である。図5において、本実施の形態のレーザ光源モジュール101においえは、第1リードフレーム5Bならびに第2リードフレーム6Bは、コの字形状ではなく板状を成している。また、第1リードフレーム5Bならびに第2リードフレーム6Bとリードピン2とは、リボン9a,9b,9c,9dにより電気的に接合されている。その他の構成は実施の形態1と同一であり、同一番号を付した構成の説明は省略する。
Claims (4)
- 複数の半導体レーザ素子がアレイ状に並べられて成る半導体レーザアレイを搭載するレーザ光源モジュールにおいて、
ステムと、
前記ステムに立設された複数の給電用リードピンと、
熱伝導性に優れた材料で作製され、前記ステム上に実装されたヒートシンクと、
絶縁性に優れた材料で作製され、前記ヒートシンク上に実装されたサブマウント基板と、
電気伝導性及び熱伝導性に優れ且つ前記半導体レーザアレイと同程度の線膨張係数の材料で作製され、前記サブマウント基板上に実装され、前記半導体レーザアレイを実装するとともに、該半導体レーザアレイの給電路を構成し、前記給電用リードピンと電気的に接合された第1リードフレームと、
電気伝導性及び熱伝導性に優れた材料で作製され、前記サブマウント基板上に前記第1リードフレームと並べて配設され、前記半導体レーザアレイの給電路を構成し、他の前記給電用リードピンと電気的に接合された第2リードフレームと、
前記半導体レーザアレイと前記第2リードフレームとを電気的に接合するワイヤと
を備えたことを特徴とするレーザ光源モジュール。 - 前記第1リードフレームの板厚a、前記第2リードフレームの板厚b、及び前記半導体レーザアレイの板厚cとの関係が、
a<b<a+c
であることを特徴とする請求項1記載のレーザ光源モジュール。 - 前記第1リードフレームと前記第2リードフレームとが、前記給電用リードピンに直接接合されている
ことを特徴とする請求項1または2に記載のレーザ光源モジュール。 - 前記第1リードフレームと前記第2リードフレームとが、リボン或いはワイヤを介して前記給電用リードピンに接合されている
ことを特徴とする請求項1または2に記載のレーザ光源モジュール。
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA2708392A CA2708392C (en) | 2007-12-21 | 2007-12-21 | Laser light source module |
EP07859969.3A EP2239823B1 (en) | 2007-12-21 | 2007-12-21 | Laser light source module |
CN200780101633XA CN101878566B (zh) | 2007-12-21 | 2007-12-21 | 激光光源模块 |
PCT/JP2007/074689 WO2009081470A1 (ja) | 2007-12-21 | 2007-12-21 | レーザ光源モジュール |
JP2009546887A JP5430406B2 (ja) | 2007-12-21 | 2007-12-21 | レーザ光源モジュール |
KR1020107011058A KR101142561B1 (ko) | 2007-12-21 | 2007-12-21 | 레이저 광원 모듈 |
US12/740,055 US8233512B2 (en) | 2007-12-21 | 2007-12-21 | Laser light source module |
Applications Claiming Priority (1)
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PCT/JP2007/074689 WO2009081470A1 (ja) | 2007-12-21 | 2007-12-21 | レーザ光源モジュール |
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WO2009081470A1 true WO2009081470A1 (ja) | 2009-07-02 |
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PCT/JP2007/074689 WO2009081470A1 (ja) | 2007-12-21 | 2007-12-21 | レーザ光源モジュール |
Country Status (7)
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US (1) | US8233512B2 (ja) |
EP (1) | EP2239823B1 (ja) |
JP (1) | JP5430406B2 (ja) |
KR (1) | KR101142561B1 (ja) |
CN (1) | CN101878566B (ja) |
CA (1) | CA2708392C (ja) |
WO (1) | WO2009081470A1 (ja) |
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JP2011029387A (ja) * | 2009-07-24 | 2011-02-10 | Mitsubishi Electric Corp | 光半導体モジュール |
JP2013058641A (ja) * | 2011-09-08 | 2013-03-28 | Mitsubishi Electric Corp | 接合方法および接合装置 |
JPWO2011074262A1 (ja) * | 2009-12-18 | 2013-04-25 | 三菱電機株式会社 | レーザモジュール |
EP2928031A1 (en) | 2014-02-13 | 2015-10-07 | Mitsubishi Electric Corporation | Laser light source module and laser light source device |
JP2015213109A (ja) * | 2014-05-01 | 2015-11-26 | 三菱電機株式会社 | レーザ光源モジュール |
WO2016063814A1 (ja) * | 2014-10-22 | 2016-04-28 | 三菱電機株式会社 | レーザ光源装置 |
US10297975B2 (en) | 2015-10-27 | 2019-05-21 | Mitsubishi Electric Corporation | Laser light source module |
JP2019527859A (ja) * | 2016-07-14 | 2019-10-03 | アヤー・ラブス・インコーポレーテッドAyar Labs Incorporated | 光データ通信システム用レーザモジュール |
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JP2011029387A (ja) * | 2009-07-24 | 2011-02-10 | Mitsubishi Electric Corp | 光半導体モジュール |
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Also Published As
Publication number | Publication date |
---|---|
US8233512B2 (en) | 2012-07-31 |
EP2239823A1 (en) | 2010-10-13 |
JP5430406B2 (ja) | 2014-02-26 |
KR20100072087A (ko) | 2010-06-29 |
KR101142561B1 (ko) | 2012-05-08 |
US20100260226A1 (en) | 2010-10-14 |
EP2239823A4 (en) | 2013-07-17 |
CN101878566B (zh) | 2012-02-29 |
CA2708392A1 (en) | 2009-07-02 |
CA2708392C (en) | 2014-03-18 |
JPWO2009081470A1 (ja) | 2011-05-06 |
CN101878566A (zh) | 2010-11-03 |
EP2239823B1 (en) | 2021-09-08 |
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