CN110858016A - Device for improving optical power density of laser - Google Patents
Device for improving optical power density of laser Download PDFInfo
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- CN110858016A CN110858016A CN201810968469.2A CN201810968469A CN110858016A CN 110858016 A CN110858016 A CN 110858016A CN 201810968469 A CN201810968469 A CN 201810968469A CN 110858016 A CN110858016 A CN 110858016A
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- axis collimating
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
- G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/43—Arrangements comprising a plurality of opto-electronic elements and associated optical interconnections
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
An apparatus for increasing optical power density of a laser, comprising: the device comprises a base, N lasers, a fast axis collimating mirror, N slow axis collimating mirrors, N steering reflecting mirrors, a focusing lens, an optical fiber and a light path lifting adjusting mechanism. Because the height of the light beam after rising can be adjusted through the light path rising adjusting mechanism, the laser with different light-emitting widths can be conveniently matched, and the light beams are adjusted to be closely arranged in height when being emitted into the slow axis collimating mirror, so that the concentration density of the light beams is ensured, the space between the light beams is effectively reduced, and the light beam density of the laser is further improved. Meanwhile, the light path between the slow axis collimating mirror and the fast axis collimating mirror is longitudinally lifted by the light path lifting adjusting mechanism, so that the horizontal distance between the slow axis collimating mirror and the fast axis collimating mirror can be compressed, and the horizontal size of the laser can be reduced.
Description
Technical Field
The invention relates to the technical field of semiconductor lasers, in particular to a device for improving the optical power density of a laser.
Background
At present, most of the multiple laser beams have the problem that the beam density is not high enough and the beam interval is limited to a large extent by the spacing between the lasers. In addition, the distance between the fast axis collimating lens and the slow axis collimating lens of the laser is too long, which wastes space and results in that the size of the laser cannot be reduced.
In the currently disclosed patent, there is an improvement on the beam density, and in chinese patent document CN201610556274.8, the distance between the laser array beams is specified by using a mirror, so that the beam density of the beams is increased to a certain extent, but at the same time, the laser is bulky, and the distance between the fast axis collimating lens and the slow axis collimating lens is not improved, and besides, no clear method is provided for mounting and fixing the mirror. The lasers mentioned in chinese patent documents CN201610015579.8 and CN201621316378.3 both use a reflector and a wedge prism to integrate the light beams, and because there is an elevation angle between the reflector and the substrate and the wedge prism has to be introduced to further adjust the light beams, the distance between the light beams cannot be accurately and freely determined. In addition, the distance between the fast and slow axis collimating mirrors is not improved.
CN105207054B discloses a multi-single-tube semiconductor laser fiber coupling module, which is to solve the problem that the laser has low light beam density due to different light emission widths, and is that the first stepped heat sink and the second stepped heat sink have four stepped surfaces F respectively, and the four stepped surfaces F are sequentially raised from the middle of the bottom plate to the two ends of the first direction, and the laser is fixed on different step heights, so as to eliminate the difference of light beams caused by different light emission widths of the laser. However, the fixed step height can not be well adapted to lasers with different light emitting widths, the beam density of the laser cannot meet higher requirements, and meanwhile, the stepped heat sink has a large volume and can not reduce the size of the whole device.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides a device for improving the optical power density of the laser, which improves the beam density and reduces the horizontal size of the laser.
The technical scheme adopted by the invention for overcoming the technical problems is as follows:
an apparatus for increasing optical power density of a laser, comprising:
the laser comprises a base, wherein N lasers are arranged on one side of the upper end face of the base at intervals along the length direction of the base, and N is a positive integer greater than or equal to 2;
the fast axis collimating lens is arranged on a light-emitting path at the front end of the laser;
the N slow axis collimating lenses are all arranged on the base and are respectively positioned at the front ends of the fast axis collimating lenses;
the N steering reflectors are arranged on the base and are respectively positioned at the front end of each slow axis collimating mirror;
the focusing lens is arranged on the base, and the steering reflector reflects the light collimated by the slow axis collimating mirror to the focusing lens;
the optical fiber is arranged on the base and is coaxial with the focusing lens, and the focusing lens converges each converged light beam into the optical fiber; and
the light path elevation adjusting mechanism is arranged between the fast axis collimating mirror and the slow axis collimating mirror, the light path elevation adjusting mechanism parallelly elevates horizontal light beams collimated by the fast axis collimating mirror and then emits the light beams into the slow axis collimating mirror, the height difference between the parallel elevated light beams and the light beams emitted after being collimated by the fast axis collimating mirror is adjusted through the light path elevation adjusting mechanism, and the N light beams elevated by the light path elevation adjusting mechanism are arranged at equal intervals along the longitudinal direction.
The light path lifting adjusting mechanism comprises N right-angle reflecting mirrors I arranged at the front ends of the lasers and a right-angle reflecting mirror II arranged on the base and located above the right-angle reflecting mirrors I, the right-angle reflecting mirrors I are slidably mounted on the base along the light emitting light path direction of the lasers, 45-degree reflecting surfaces of the right-angle reflecting mirrors I and 45-degree reflecting surfaces of the right-angle reflecting mirrors II are oppositely arranged and parallel to each other, light beams collimated by the fast-axis collimating mirror upwards irradiate to the right-angle reflecting mirrors II after being reflected by the 45-degree reflecting surfaces of the right-angle reflecting mirrors I, the light beams are reflected by the 45-degree reflecting surfaces of the right-angle reflecting mirrors II to form the slow-axis collimating mirror, and the distance between each right-angle reflecting mirror I and the corresponding lasers from left increases in sequence.
Preferably, the laser device further comprises a substrate arranged on the base, and each laser is horizontally arranged on the upper surface of the substrate.
Preferably, the optical system further comprises a base station arranged on the base, and each slow-axis collimating mirror is arranged on the upper surface of the base station.
Preferably, the focusing lens further comprises a support II arranged on the base, and the focusing lens is arranged on the support II.
Preferably, both ends of the right angle reflecting mirror ii are fixed to the base by the pillars i, respectively.
Preferably, when the light beam collimated by the fast axis collimating mirror is not parallel to the horizontal plane, the included angle of the bottom plane of the right angle reflecting mirror I relative to the base is equal to the included angle between the collimated light beam and the horizontal plane.
The invention has the beneficial effects that: the height of the light beam after rising can be adjusted through the light path rising adjusting mechanism, so that lasers with different light emitting widths can be conveniently matched, the heights of the lasers are adjusted to be approximately consistent when the light beams are tightly arranged in the height direction when entering the slow axis collimating mirror, the concentration density of the light beams is ensured, the space between the light beams is effectively reduced, and the light beam density of the lasers is improved. Meanwhile, the light path between the slow axis collimating mirror and the fast axis collimating mirror is longitudinally lifted by the light path lifting adjusting mechanism, so that the horizontal distance between the slow axis collimating mirror and the fast axis collimating mirror can be compressed, and the horizontal size of the laser can be reduced. .
Drawings
FIG. 1 is a schematic perspective view of the present invention;
FIG. 2 is a schematic view of the structure of the lower mirror and the upper mirror of the present invention;
FIG. 3 is a schematic view of the lower reflector of the present invention after rotation;
in the figure, 1, a base 2, a substrate 3, a laser 4, a right angle reflector I5, a right angle reflector II 6, a support I7, a base 8, a slow axis collimating mirror 9, a steering reflector 10, a support II 11, a focusing lens 12, an optical fiber 13 and a fast axis collimating mirror.
Detailed Description
The invention will be further explained with reference to fig. 1 and 2.
An apparatus for increasing optical power density of a laser, comprising: the laser comprises a base 1, wherein N lasers 3 are arranged on one side of the upper end face of the base at intervals along the length direction of the base, and N is a positive integer greater than or equal to 2; the fast axis collimating lens 13 is arranged on a light-emitting path at the front end of the laser 3; the N slow axis collimating mirrors 8 are arranged on the base 1 and are respectively positioned at the front ends of the fast axis collimating mirrors 13; the N steering reflectors 9 are arranged on the base 1 and are respectively positioned at the front end of each slow axis collimating mirror 8; the focusing lens 11 is arranged on the base 1, and the steering reflector 9 reflects the light collimated by the slow axis collimator lens 8 to the focusing lens 11; the optical fiber 12 is arranged on the base 1 and is coaxial with the focusing lens 11, and the focusing lens 11 converges each converged light beam into the optical fiber 12; and the light path elevation adjusting mechanism is arranged between the fast axis collimating mirror 13 and the slow axis collimating mirror 8, the light path elevation adjusting mechanism parallelly elevates the horizontal light beam collimated by the fast axis collimating mirror 13 and then emits the light beam into the slow axis collimating mirror 8, the height difference between the parallel elevated light beam and the light beam emitted after being collimated by the fast axis collimating mirror 13 is adjusted by the light path elevation adjusting mechanism, and the N light beams elevated by the light path elevation adjusting mechanism are longitudinally arranged at equal intervals. The light emitted by the N lasers 3 during working is collimated by the corresponding fast axis collimating mirrors 13 to become parallel light, the parallel light is heightened by the light path elevation adjusting mechanism in the height direction and then is emitted into the slow axis collimating mirror 8 in the horizontal direction, the parallel light is collimated by the slow axis collimating mirror 8 and then is reflected to the focusing lens 11 by the corresponding steering reflecting mirrors 9, and the focusing lens 11 focuses the light beams reflected by the steering reflecting mirrors 9 and then converges the light beams into the optical fiber 12. Because the height of the light beam after rising can be adjusted through the light path rising adjusting mechanism, the laser 3 with different light-emitting widths can be conveniently matched, and the light beams reflected by the corresponding steering reflecting mirrors 9 are adjusted to be arranged at equal intervals in the height direction, so that the light beams are arranged at the minimum interval, the concentration density is improved, the intervals among the light beams are effectively reduced, and the light beam density of the laser is improved. Meanwhile, the light path between the slow axis collimating mirror 8 and the fast axis collimating mirror 13 is longitudinally lifted by the light path lifting adjusting mechanism, so that the horizontal distance between the slow axis collimating mirror 8 and the fast axis collimating mirror 13 can be compressed, and the horizontal size of the laser can be reduced.
Example 1:
as shown in fig. 2, the light path elevation adjusting mechanism includes N right-angle reflectors i 4 disposed at the front ends of the lasers 3 and a right-angle reflector ii 5 disposed on the base 1 and located above the right-angle reflector i 4, the right-angle reflector i 4 is slidably mounted on the base 1 along the light-emitting light path direction of the lasers 3, 45 ° reflecting surfaces of the right-angle reflectors i 4 and 45 ° reflecting surfaces of the right-angle reflectors ii 5 are disposed opposite to each other and parallel to each other, the light beam collimated by the fast axis collimator 13 is reflected by the 45 ° reflecting surfaces of the right-angle reflectors i 4 and then emitted upward to the right-angle reflectors ii 5, and then reflected by the 45 ° reflecting surfaces of the right-angle reflectors ii 5 and emitted to the slow axis collimator 8, and the distance between each right-angle reflector i 4 and the corresponding laser 3 increases in sequence from left to right. The light emitted by the laser 3 is collimated by the fast axis collimating mirror 13 and then becomes parallel light, and the distance between each right angle reflector I4 and the corresponding laser 3 is sequentially increased, so that the light beam position reflected to the 45-degree reflecting surface of the right angle reflector II 5 by the 45-degree reflecting surface of the right angle reflector I4 is changed in front and back positions, the light beams reflected by the right angle reflector II 5 are longitudinally spaced at equal intervals, the distance minimization of the reflected light beams can be ensured by adjusting the position of the right angle reflector I4, and the distance between the light beams is reduced to the maximum extent.
Example 2:
the laser device further comprises a substrate 2 arranged on the base 1, and each laser 3 is horizontally arranged on the upper surface of the substrate 2. The uniformity of the mounting heights of the respective lasers 3 can be secured by providing the substrate 2.
Example 3:
the device also comprises a base platform 7 arranged on the base 1, and each slow axis collimating mirror 8 is arranged on the upper surface of the base platform 7. The height position of each slow axis collimating mirror 8 can be conveniently adjusted by adjusting the height of the base station 7, so that the slow axis collimating mirror can reach the appointed height position.
Example 4:
the focusing lens device further comprises a support II 10 arranged on the base 1, and the focusing lens 11 is arranged on the support II 10. The height position of the focusing lens 11 can be adjusted by adjusting the height of the support II 10, so that the focusing lens can smoothly focus light to the optical fiber 12.
Example 5:
two ends of the right-angle reflecting mirror II 5 are respectively fixed on the base 1 through a support column I6. Can conveniently fix the level of right angle reflector II 5 in base 1 top through two pillars I6, the installation is simple.
Example 6:
as shown in fig. 3, when the light beam collimated by the fast axis collimator 13 is not parallel to the horizontal plane, the included angle of the bottom plane of the rectangular reflector i 4 relative to the base 1 is equal to the included angle between the collimated light beam and the horizontal plane. By adjusting the rotation angle of the right angle reflector I4, the light beams which are not parallel are matched, and the light beams reflected by the right angle reflector I4 are ensured to be emitted to a 45-degree reflecting surface of the right angle reflector II 5 in the vertical direction.
Claims (7)
1. An apparatus for increasing optical power density of a laser, comprising:
the laser comprises a base (1), wherein N lasers (3) are arranged on one side of the upper end face of the base at intervals along the length direction of the base, and N is a positive integer greater than or equal to 2;
the fast axis collimating lens (13) is arranged on a light-emitting path at the front end of the laser (3);
the N slow axis collimating lenses (8) are all arranged on the base (1) and are respectively positioned at the front ends of the fast axis collimating lenses (13);
the N steering reflectors (9) are arranged on the base (1) and are respectively positioned at the front ends of the slow axis collimating mirrors (8);
the focusing lens (11) is arranged on the base (1), and the steering reflector (9) reflects the light collimated by the slow axis collimator lens (8) to the focusing lens (11);
the optical fiber (12) is arranged on the base (1) and is coaxial with the focusing lens (11), and the focusing lens (11) converges the converged light beams into the optical fiber (12); and
the light path lifting adjusting mechanism is arranged between the fast axis collimating mirror (13) and the slow axis collimating mirror (8), the light path lifting adjusting mechanism parallelly lifts horizontal light beams collimated by the fast axis collimating mirror (13) and then emits the light beams into the slow axis collimating mirror (8), the height difference between the light beams after parallel lifting and the light beams emitted after being collimated by the fast axis collimating mirror (13) is adjusted through the light path lifting adjusting mechanism, and the light beams of the N light beams after being lifted by the light path lifting adjusting mechanism are arranged at equal intervals along the longitudinal direction.
2. The apparatus of claim 1, wherein: the light path lifting adjusting mechanism comprises N right-angle reflecting mirrors I (4) arranged at the front ends of the lasers (3) and a right-angle reflecting mirror II (5) arranged on the base (1) and positioned above the right-angle reflecting mirrors I (4), the right-angle reflector I (4) is slidably mounted on the base (1) along the light-emitting light path direction of the laser (3), a 45-degree reflecting surface of the right-angle reflector I (4) and a 45-degree reflecting surface of the right-angle reflector II (5) are oppositely arranged and are parallel to each other, a light beam collimated by the fast-axis collimating mirror (13) is reflected by the 45-degree reflecting surface of the right-angle reflector I (4) and then upwards emitted to the right-angle reflector II (5), and then is reflected by the 45-degree reflecting surface of the right-angle reflector II (5) and then emitted to the slow-axis collimating mirror (8), and the distance between each right-angle reflector I (4) and the corresponding laser (3) from left to right is sequentially increased.
3. The apparatus of claim 1, wherein: the laser device is characterized by further comprising a base plate (2) arranged on the base (1), and each laser (3) is horizontally arranged on the upper surface of the base plate (2).
4. The apparatus of claim 1, wherein: the device also comprises a base platform (7) arranged on the base (1), and each slow axis collimating mirror (8) is arranged on the upper surface of the base platform (7).
5. The apparatus of claim 1, wherein: the focusing lens is characterized by further comprising a support II (10) arranged on the base (1), and the focusing lens (11) is arranged on the support II (10).
6. The apparatus of claim 2, wherein: and two ends of the right-angle reflecting mirror II (5) are respectively fixed on the base (1) through the support I (6).
7. The apparatus of claim 2, wherein: when the light beam collimated by the fast axis collimating mirror (13) is not parallel to the horizontal plane, the included angle of the bottom plane of the right angle reflecting mirror I (4) relative to the base (1) is equal to the included angle between the collimated light beam and the horizontal plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968469.2A CN110858016A (en) | 2018-08-23 | 2018-08-23 | Device for improving optical power density of laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810968469.2A CN110858016A (en) | 2018-08-23 | 2018-08-23 | Device for improving optical power density of laser |
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| CN110858016A true CN110858016A (en) | 2020-03-03 |
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| CN201810968469.2A Pending CN110858016A (en) | 2018-08-23 | 2018-08-23 | Device for improving optical power density of laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112965179A (en) * | 2021-02-09 | 2021-06-15 | 度亘激光技术（苏州）有限公司 | Construction method of focusing lens group adjusting platform and focusing lens group adjusting platform |
| CN114200595A (en) * | 2020-09-18 | 2022-03-18 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN117613676A (en) * | 2023-11-28 | 2024-02-27 | 北京大族天成半导体技术有限公司 | Small-volume semiconductor laser |
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| CN1933266A (en) * | 2006-09-29 | 2007-03-21 | 清华大学 | Laser array device |
| CN105006741A (en) * | 2015-08-24 | 2015-10-28 | 武汉大学 | High repetition frequency light source module based on pulse semiconductor laser |
| CN105759411A (en) * | 2016-04-15 | 2016-07-13 | 武汉凌云光电科技有限责任公司 | Optical fiber coupled laser, optical fiber coupled laser system and optimization method thereof |
| CN205670615U (en) * | 2016-05-26 | 2016-11-02 | 北京大族天成半导体技术有限公司 | High power high luminance optical fibre output semiconductor laser |
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2018
- 2018-08-23 CN CN201810968469.2A patent/CN110858016A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6240116B1 (en) * | 1997-08-14 | 2001-05-29 | Sdl, Inc. | Laser diode array assemblies with optimized brightness conservation |
| CN1933266A (en) * | 2006-09-29 | 2007-03-21 | 清华大学 | Laser array device |
| CN105006741A (en) * | 2015-08-24 | 2015-10-28 | 武汉大学 | High repetition frequency light source module based on pulse semiconductor laser |
| CN105759411A (en) * | 2016-04-15 | 2016-07-13 | 武汉凌云光电科技有限责任公司 | Optical fiber coupled laser, optical fiber coupled laser system and optimization method thereof |
| CN205670615U (en) * | 2016-05-26 | 2016-11-02 | 北京大族天成半导体技术有限公司 | High power high luminance optical fibre output semiconductor laser |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114200595A (en) * | 2020-09-18 | 2022-03-18 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN114200595B (en) * | 2020-09-18 | 2023-09-29 | 青岛海信宽带多媒体技术有限公司 | Optical module |
| CN112965179A (en) * | 2021-02-09 | 2021-06-15 | 度亘激光技术（苏州）有限公司 | Construction method of focusing lens group adjusting platform and focusing lens group adjusting platform |
| CN117613676A (en) * | 2023-11-28 | 2024-02-27 | 北京大族天成半导体技术有限公司 | Small-volume semiconductor laser |
| CN117613676B (en) * | 2023-11-28 | 2024-05-03 | 北京大族天成半导体技术有限公司 | Small-volume semiconductor laser |
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