CN101825749A - Semiconductor laser mini bar-based optical fiber coupling module - Google Patents
Semiconductor laser mini bar-based optical fiber coupling module Download PDFInfo
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- CN101825749A CN101825749A CN 201010174235 CN201010174235A CN101825749A CN 101825749 A CN101825749 A CN 101825749A CN 201010174235 CN201010174235 CN 201010174235 CN 201010174235 A CN201010174235 A CN 201010174235A CN 101825749 A CN101825749 A CN 101825749A
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Abstract
The invention discloses a semiconductor laser mini bar-based optical fiber coupling module. The optical fiber coupling module comprises a pedestal, wherein a light emitting module consisting of a light emitting chip set, a fast axis collimator and an optical fiber array is arranged on the pedestal; the fast axis collimator and the optical fiber array are sequentially arranged in the laser emission direction of the light emitting chip set; the laser emitted from the light emitting chip set is emitted into the incidence side of the fast axis collimator; the laser emitted from the exit side of the fast axis collimator is emitted into the incidence side of the optical fiber array; the exit side of the optical fiber array is further provided with an optical fiber combiner; and the laser emitted from the optical fiber array is emitted into the light input end of the optical fiber combiner. The coupling module is a product developed on the basis of the mini bar which can couple the light beam into the optical fiber without an optical system for complex cutting, rotating and rearranging. The coupling module of the invention has the advantages of simple structure, small size and low cost; and the mini bar type optical fiber coupling module comprising two or more light emitting regions can be designed and produced according to different customer requirements.
Description
Technical field
The invention belongs to laser instrument and make the field, relate to a kind of fiber coupling module, especially a kind of fiber coupling module that is used for semiconductor laser mini bar.
Background technology
Semiconductor laser and fiber coupling system thereof obtain application more and more widely in fields such as industry, medical treatment, military affairs.In numerous application, volume is little, and is in light weight, and the coupling module of the semiconductor laser that cost is low becomes the focal point in market and the focus of various countries' research.
At present in order to pursue the semiconductor laser coupling module of high power and high brightness output, normally add corresponding beam shaping system at semiconductor laser (LD) front end, as light beam is cut, rotation, reset etc., laser beam is compressed to the hot spot output (Niu Gang that needs, Fanzhong's dimension, Wang Peifeng etc., " high-power semiconductor laser array single fiber coupling technique ", the semiconductor journal, 2007,28 (10): 1607-1610), make that like this coupling module volume is big, structure and complex process, the cost height.Related product is a lot of both at home and abroad, but mostly be the product of developing on two kinds of chip basis, all there is certain shortcoming: (1) single tube (Single Emitter) product, this product has only a luminous point, accomplish 808nm, 50? m, the laser output of 5W, although the optical fiber core diameter is very little, because the restriction of power, brightness is not very high.
(2) single Bar product, one is (as 47 more than 19 or 19 for the luminous point of this product, 62), at this Bar bar, the beam shaping modes of using cutting, upset, resetting, focus on realize optical fiber coupling output more, and this series products can reach very high power, but owing to adopted complicated optical system, cost is very high, and the output optical fibre core diameter can not accomplish very little, the difficult purpose that reaches high brightness output.
(3) many single tubes product, with respect to traditional single tube product, this type product has certain increase on power, but with compare based on the product of Bar bar class, its power still is on the low side.
(4) many Bar bar product, this series products have absolute advantage aspect power, but in the optical fiber that is difficult to make laser coupled advance little core diameter, this has just determined that the brightness of this series products is not high.
In sum, in traditional semiconductor laser optical fiber coupling scheme, one adopts single tube (SingleEmitter) or single Bar laser chip, and optical shaping system (mainly being Bar bar class) then often needs to carry out complicated optics cutting, rotation, resets.Conventional art has following shortcoming: (1) based on the optical fiber coupling cost of products height of Bar bar, the drive current of requirement is big.Owing to added complicated optical system, make the entire product cost improve, reduced such competitiveness of product in market, this series products often needs very high drive current simultaneously, and this has seriously limited the application of product.
(2) power and brightness are on the low side.For single tube optical fiber coupling product, because the restriction of its power is difficult to make high-power, high-brightness laser device product.And for Bar bar optical fiber coupling product, owing to be difficult to light beam coupling is advanced in the optical fiber of little core diameter, so brightness is not high yet.
(3) complex process.Common Bar bar optical fiber coupling product adopts complicated optical system usually, to reach the purpose of little core optical fibers coupling output, this optical system has comprised complicated beam shaping lens, in actual production, lens of every increase, technology difficulty increases greatly, the loss that also brings power simultaneously.
(4) complex structure.Therefore in the conventional art,, no matter be single tube class or Bar bar series products, all adopted complicated optical shaping system, make the complex structure of coupling module for the beam quality that obtains, bulky.
Summary of the invention
The objective of the invention is to overcome the shortcoming of above-mentioned technology, a kind of fiber coupling module of based semiconductor laser mini bar is provided.This kind fiber coupling module has the characteristics of two or more luminous points at mini bar, need not slow axis beam is collimated, also need not optical system through complicated cutting, rotation, rearrangement, but adopt fiber array directly to be coupled in the optical fiber, have the advantage that manufacture craft is simple, volume is small and exquisite, cost is low.
The objective of the invention is to solve by the following technical programs: the fiber coupling module of this kind based semiconductor laser mini bar, comprise base, described base is provided with the light emitting module of being made up of luminescence chip group, fast axis collimation mirror and fiber array, described fast axis collimation mirror and fiber array place on the Laser emission direction of luminescence chip group successively, and the emission laser of luminescence chip group is injected the light incident side of fast axis collimation mirror, the laser that fast axis collimation mirror exiting side penetrates is injected the light incident side of fiber array, and the exiting side of fiber array also is provided with optical-fiber bundling device; The shoot laser of described fiber array is injected the light input end of optical-fiber bundling device.
Above-mentioned fast axis collimation mirror is D type post lens or O type optical fiber lens; Described luminescence chip group is made up of one or more luminescence chips.
Above-mentioned luminescence chip is Mini Bar.
Further, the number of optical fiber is greater than or equal to the luminous zone number of Mini Bar in the above fiber array.
More than a plurality of luminescence chips of composition luminescence chip group are arranged side by side or are become stepped arrangement, and the Laser emission direction unanimity of each luminescence chip.
The length of above-mentioned fast axis collimation mirror slow-axis direction is less than 10mm.
The present invention has following beneficial effect: (1) is simple in structure, volume is little: the present invention only needs noise spectra of semiconductor lasers fast axial light bundle to collimate, need not slow axis beam is collimated, need not to adopt the optical system of complicated cutting, rotation, rearrangement light beam coupling can be advanced in the optical fiber, realize the making of coupling module.The volume of integral module is small and exquisite, and is simple in structure.
(2) cost is low: the present invention is based on the mini bar design, its price is lower, and the coupling product of preparing is more competitive than Bar bar type optical fiber coupling product; And with respect to the single tube product, the power that a chip of the present invention produces needs a plurality of single tube products just can reach, and cost reduces naturally greatly.
(3) power height: compare with traditional single tube product, owing to adopt mini bar, therefore power of the present invention significantly improves.
(4) technology is simple: the present invention has saved processes such as the needed beam reversal of common Bar bar beam shaping system, cutting, rearrangement, and the mode by simple fast axial light bundle collimation and optical-fiber bundling can realize the purpose that optical fiber is coupled, and technology is very simple.
Description of drawings
Fig. 1 is the structural principle synoptic diagram of the embodiment of the invention one; Fig. 2 is the structural principle synoptic diagram of the embodiment of the invention two; Fig. 3 disassembles synoptic diagram for the solid of the embodiment of the invention two; Fig. 4 is the assembling synoptic diagram of the embodiment of the invention two; Fig. 5 is the various hot spot forms of optical-fiber bundling device 5 outputs.
Wherein: 1 base plate; 2 is the luminescence chip group; 3 is the fast axis collimation mirror; 4 is fiber array; 5 is optical-fiber bundling device.
Embodiment
Be described in detail technical scheme of the present invention below in conjunction with drawings and Examples: as depicted in figs. 1 and 2, the present invention includes base 1, luminescence chip group 2, fast axis collimation mirror 3, fiber array 4 and optical-fiber bundling device 5.Wherein the light emitting module of being made up of luminescence chip group 2, fast axis collimation mirror 3 and fiber array 4 is set on the base 1, fast axis collimation mirror 3 and fiber array 4 place on the Laser emission direction of luminescence chip group 2 successively, and the emission laser of luminescence chip group 2 is injected the light incident side of fast axis collimation mirror 3, and the laser that fast axis collimation mirror 3 exiting side penetrate is injected the light incident side of fiber array 4.Exiting side at fiber array 4 is provided with optical-fiber bundling device 5, makes the shoot laser of fiber array 4 be injected into the light input end of optical-fiber bundling device 5.The output facula of optical-fiber bundling device 5 can be the shape as Fig. 5 (a) and (b), (c), (d).
Fast axis collimation mirror 3 of the present invention is D type post lens or O type optical fiber lens, luminescence chip group 2 is made up of one or more luminescence chips, wherein luminescence chip is selected Mini Bar (being mini bar) for use, number of fibers can be 7,9,16,19 or the like in the fiber array 3 of the present invention, and the number of optical fiber should be greater than or equal to the luminous zone number of Mini Bar in the fiber array 3.A plurality of luminescence chips of forming luminescence chip group 2 among the present invention are arranged side by side or are become stepped arrangement, and the Laser emission direction unanimity of each luminescence chip.Require the length of the slow-axis direction of fast axis collimation mirror 3 among the present invention to be less than 10mm.
Embodiment: referring to Fig. 3 and Fig. 4, the basic structure that adopts among this embodiment is identical with the structure of above elaboration, also includes base 1, luminescence chip group 2, fast axis collimation mirror 3, fiber array 4 and optical-fiber bundling device 5.In order to make each parts alignment that is arranged on the base 1, base 1 is provided with the step of differing heights, luminescence chip group 2 is fixedly installed on first step, ensuing each step is fixed in position fast axis collimation mirror 3, fiber array 4 and optical-fiber bundling device 5 successively, height is set guarantees that the emission laser of luminescence chip group 2 injects the light incident side of fast axis collimation mirror 3 of each step, the laser beam that fast axis collimation mirror 3 exiting side penetrate is injected the light incident side of fiber array 4, and the outgoing laser beam of fiber array 4 is injected into the light input end of optical-fiber bundling device 5.In this embodiment, fast axis collimation mirror 3 is selected O type optical fiber lens for use.
Principle of work the present invention of the present invention at first utilizes the luminescence chip group 2 of mini bar (Mini Bar) arrangement as laser generator, wherein mini bar is a kind of chip between single-shot luminous point chip and standard 10 millimeters long chips (19 or 19 above luminous points), the power of this each luminous point of chip also is between the power of single-shot luminous point chip and standard 10 each luminous point of millimeters long chip, one is lower than single-shot luminous point chip power, but is higher than the power of standard 10 each luminous point of millimeters long chip.After the laser that is sent by luminescence chip group 2 adopts fast axis collimation mirror 3 to carry out fast axis collimation, be coupled (being that optical fiber in the fiber array 4 is used for the directly light beam of coupling each luminous zone behind fast axis collimation) by fiber array 4, so the number of optical fiber must be greater than or equal to number with luminescence chip group 2 luminous zones in the fiber array 4.Optical-fiber bundling device 5 is used to close the optical fiber after each luminous zone of bundle is coupled, and making the light array output beam is uniform circular light spot or other shape hot spots, as shown in Fig. 5 (a) and (b), (c), (d).
In sum, the angle of divergence of one semiconductor laser quick shaft direction is big, is about 70 °, and light beam can't be directly coupled in the optical fiber, must collimate to the fast axial light bundle.And the present invention is different from the fiber coupling module product of prior art, it is the product that develops on the basis of Mini Bar, need not the noise spectra of semiconductor lasers light beam and collimate, also need not light beam coupling to be advanced in the optical fiber through the optical system of complicated cutting, rotation, rearrangement.Therefore modular structure of the present invention is simple, and volume is small and exquisite, and cost is low, can produce the fiber coupling module of the Mini Bar that comprises 2 or 2 above luminous zones according to different customer demands.
The present invention all is between single tube class and the Bar bar series products from aspects such as output power, drive current, prices, has remedied both deficiencies, also is effectively to replenish to the market demand simultaneously, has vast market prospect.
Claims (6)
1. the fiber coupling module of a based semiconductor laser mini bar, comprise base (1), it is characterized in that: described base (1) is provided with by luminescence chip group (2), the light emitting module that fast axis collimation mirror (3) and fiber array (4) are formed, described fast axis collimation mirror (3) and fiber array (4) place on the Laser emission direction of luminescence chip group (2) successively, and the emission laser of luminescence chip group (2) is injected the light incident side of fast axis collimation mirror (3), the laser that fast axis collimation mirror (3) exiting side penetrates is injected the light incident side of fiber array (4), and the exiting side of fiber array (4) also is provided with optical-fiber bundling device (5); The shoot laser of described fiber array (4) is injected the light input end of optical-fiber bundling device (5).
2. the fiber coupling module of based semiconductor laser mini bar according to claim 1 is characterized in that: described fast axis collimation mirror (3) is D type post lens or O type optical fiber lens; Described luminescence chip group (2) is made up of one or more luminescence chips.
3. the fiber coupling module of based semiconductor laser mini bar according to claim 1 is characterized in that: described luminescence chip is Mini Bar.
4. the fiber coupling module of based semiconductor laser mini bar according to claim 3 is characterized in that: the number of optical fiber is greater than or equal to the luminous zone number of Mini Bar in the fiber array (3).
5. the fiber coupling module of based semiconductor laser mini bar according to claim 1 is characterized in that: a plurality of luminescence chips of composition luminescence chip group (2) are arranged side by side or are become stepped arrangement, and the Laser emission direction unanimity of each luminescence chip.
6. the fiber coupling module of based semiconductor laser mini bar according to claim 1 is characterized in that: the length of described fast axis collimation mirror (3) slow-axis direction is less than 10mm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082393A (en) * | 2010-11-22 | 2011-06-01 | 山东华光光电子有限公司 | Method for shaping optical fiber with double film-plated cambered surfaces of semiconductor laser |
| CN108267816A (en) * | 2017-01-04 | 2018-07-10 | 苏州旭创科技有限公司 | Optical module, its production method and optical module |
| CN108390252A (en) * | 2017-02-03 | 2018-08-10 | 山东华光光电子股份有限公司 | A kind of quick autoregistration optical fiber for reforming method of semiconductor laser |
| CN111123533A (en) * | 2019-05-10 | 2020-05-08 | 杭州奥创光子技术有限公司 | Laser output head for spectrum beam combination and preparation method thereof |
| CN112821188A (en) * | 2019-10-30 | 2021-05-18 | 山东华光光电子股份有限公司 | Pump laser packaging structure and packaging method |
| CN112859258A (en) * | 2021-02-09 | 2021-05-28 | 北京凯普林光电科技股份有限公司 | Integrally designed laser radar bar optical fiber coupling module |
| WO2022016753A1 (en) * | 2020-07-23 | 2022-01-27 | 山东华光光电子股份有限公司 | Optical processing method for semiconductor laser stack array |
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| CN1710453A (en) * | 2005-05-13 | 2005-12-21 | 中国科学院上海微系统与信息技术研究所 | Optical fiber coupler of semiconductor laser array and method for making same |
| US20060280217A1 (en) * | 2003-06-12 | 2006-12-14 | Spi Lasers Uk Ltd. | Optical apparatus, comprising a brightness converter, for providing optical radiation |
| CN201203679Y (en) * | 2007-12-27 | 2009-03-04 | 王仲明 | Structure for multipath semiconductor laser to couple into single optical fiber |
| CN101435900A (en) * | 2008-12-19 | 2009-05-20 | 山东大学 | Optical fiber coupling method of multiple semiconductor laser devices |
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Patent Citations (4)
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| US20060280217A1 (en) * | 2003-06-12 | 2006-12-14 | Spi Lasers Uk Ltd. | Optical apparatus, comprising a brightness converter, for providing optical radiation |
| CN1710453A (en) * | 2005-05-13 | 2005-12-21 | 中国科学院上海微系统与信息技术研究所 | Optical fiber coupler of semiconductor laser array and method for making same |
| CN201203679Y (en) * | 2007-12-27 | 2009-03-04 | 王仲明 | Structure for multipath semiconductor laser to couple into single optical fiber |
| CN101435900A (en) * | 2008-12-19 | 2009-05-20 | 山东大学 | Optical fiber coupling method of multiple semiconductor laser devices |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082393A (en) * | 2010-11-22 | 2011-06-01 | 山东华光光电子有限公司 | Method for shaping optical fiber with double film-plated cambered surfaces of semiconductor laser |
| CN102082393B (en) * | 2010-11-22 | 2011-12-28 | 山东华光光电子有限公司 | Method for shaping optical fiber with double film-plated cambered surfaces of semiconductor laser |
| CN108267816A (en) * | 2017-01-04 | 2018-07-10 | 苏州旭创科技有限公司 | Optical module, its production method and optical module |
| CN108390252A (en) * | 2017-02-03 | 2018-08-10 | 山东华光光电子股份有限公司 | A kind of quick autoregistration optical fiber for reforming method of semiconductor laser |
| CN108390252B (en) * | 2017-02-03 | 2020-06-09 | 山东华光光电子股份有限公司 | Rapid self-aligning optical fiber shaping method for semiconductor laser |
| CN111123533A (en) * | 2019-05-10 | 2020-05-08 | 杭州奥创光子技术有限公司 | Laser output head for spectrum beam combination and preparation method thereof |
| CN112821188A (en) * | 2019-10-30 | 2021-05-18 | 山东华光光电子股份有限公司 | Pump laser packaging structure and packaging method |
| WO2022016753A1 (en) * | 2020-07-23 | 2022-01-27 | 山东华光光电子股份有限公司 | Optical processing method for semiconductor laser stack array |
| CN112859258A (en) * | 2021-02-09 | 2021-05-28 | 北京凯普林光电科技股份有限公司 | Integrally designed laser radar bar optical fiber coupling module |
| CN112859258B (en) * | 2021-02-09 | 2022-05-24 | 北京凯普林光电科技股份有限公司 | Integrally designed laser radar bar optical fiber coupling module |
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Application publication date: 20100908 |