CN103487887A - Device for integrating and transmitting different-wavelength multi-path lasers and use method thereof - Google Patents
Device for integrating and transmitting different-wavelength multi-path lasers and use method thereof Download PDFInfo
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- CN103487887A CN103487887A CN201310467426.3A CN201310467426A CN103487887A CN 103487887 A CN103487887 A CN 103487887A CN 201310467426 A CN201310467426 A CN 201310467426A CN 103487887 A CN103487887 A CN 103487887A
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Abstract
The invention discloses a device for integrating and transmitting different-wavelength multi-path lasers and a use method of the device for integrating and transmitting the different-wavelength multi-path lasers. The device for integrating and transmitting the different-wavelength multi-path lasers comprises a plurality of laser shaping fiber-based feeding devices. Each laser shaping fiber-based feeding device is communicated with a fused biconical taper beam combiner through an input optical fiber. The fused biconical taper beam combiner is communicated with a laser shaping fiber discharging device through an output optical fiber. The use method of the device for integrating and transmitting the different-wavelength multi-path lasers comprises the following steps that firstly, when the device is used for the first time, collimation is conducted on a laser beam output by a laser device, and then the fiber-based feeding is conducted on the laser beam; secondly, a laser beam output by the fused biconical taper beam combiner is shaped; thirdly, when the device is used again, fine adjustment is conducted on collimation of the laser beam. The device for integrating and transmitting the different-wavelength multi-path lasers is simple in composition, convenient to adjust, high in flexibility, good in repeatability, and high in transmission efficiency.
Description
Technical field
The invention belongs to the synthetic transmitting device of a kind of laser, be specifically related to a kind of different wave length multi-pass laser and synthesize and transmitting device and using method thereof.
Background technology
At the laser Applied research fields, sometimes need the laser of multi beam different wave length synthetic a branch ofly, act on research object simultaneously, as study the excitation spectrum of certain atom, or certain atom excite ionization path etc.This just requires a few bundle light compositing degree high, and laser can coincide together well near field and far field.Simultaneously because what utilize in research process is the energy of laser, so after synthetic in transmitting procedure loss little, in order to guarantee the reliability of experimental data, also require synthetic transmission system to there is certain stability and repeatability.
Synthetic and development transmission technology of different wave length laser has very long history, but all belong to the spatial beam synthetic technology, as sheet glass method, lens method, optical filter method, crystal method, coating method, low-angle synthetic method etc., all there are some shortcomings in these classic methods, be summed up as: (i) synthetic zone is little, only at the application point place, overlaps, and the zone of action is little, or synthetic zone is overlapping not exclusively, synthetic degree is low; (II) composite wave long number is restricted, and some method just is not suitable for the synthetic of multi-pass principle; (III) has certain requirement to synthetic wavelength, is not suitable for the light compositing that wavelength is close; The beam system complexity is closed in (IV) space, poor stability, and loss is large, and cost is high, regulates difficulty etc.And spectral investigation or excite ionization research institute to relate to wavelength coverage large, also usually use the multi-pass that wavelength is close synthetic, require the synthetic degree of light beam high simultaneously, the degree of overlapping of light beam and active region is high, the good stability of system, to ensure experimental repeatability and the data reliability of Mass Spectra.
At present, the sharp combiner of prior art and transmitting device and using method also exist close beam system huge, complicated, regulate that difficulty, dirigibility are low, the series of problems such as poor repeatability, transfer efficiency are low.
Summary of the invention
The present invention proposes for solving the technical matters existed in prior art, its objective is that a kind of volume is provided is little, is convenient to regulate the different wave length multi-pass laser that dirigibility and transfer efficiency are high synthetic and transmitting device and using method thereof.
Technical scheme of the present invention is: optical fiber synthesizes and transmitting device and using method thereof, comprise that a plurality of laser shapings are coupled into fine device, each laser shaping is coupled into fine device and is communicated with the fused biconical taper bundling device by input optical fibre respectively, the fused biconical taper bundling device is communicated with laser shaping fiber device by output optical fibre, described laser shaping is coupled into fine device and is included on same base and keeps at a certain distance away each other from left to right and be respectively arranged with the I diaphragm, the input shaper lens combination, the input focus lens, incident optical holding frame and II diaphragm, described laser shaping fiber device is included on same base and keeps at a certain distance away each other from left to right and be respectively arranged with the output optical fibre holding frame, short focus lens, output Shaping lens combination and output condenser lens.
Described input shaper lens combination is comprised of two lens, and described output Shaping lens combination is comprised of two lens.
Described input optical fibre is placed on the incident optical holding frame, makes the port of input optical fibre be placed in the focus place of input focus lens, and the output terminal of described output optical fibre is arranged in the front focus position of the short focus lens of laser shaping fiber device.
Describedly be coupled into each element center in fine device or fiber device respectively on same center line separately.
Described a kind of different wave length multi-pass laser synthesizes and transmitting device, and its using method comprises the following steps:
(i), while using for the first time, laser output laser beam is collimated
The adjusting knob of regulating the laser total reflective mirror makes I diaphragm that laser beam gets well by collimation and the clear aperature of II diaphragm, make the I diaphragm, the aperture center of II diaphragm is coaxial with beam center, laser beam just becomes collimated light beam, after the I diaphragm, add the input shaper lens combination in order to adjust the laser beam spot size, light beam after adjustment is through the input focus lens focus, focal spot is positioned on the incident optical end face, adjusting knob on careful adjusting incident optical holding frame and the adjusting knob of input focus lens, make focused beam be coupled into input optical fibre, add the laser powermeter monitoring after the output terminal of output optical fibre, need to be from low-power in adjusting laser enters fine process, progressively improve power, until reach the transfer efficiency maximum,
(II) carries out shaping to laser beam synthetic through the fused biconical taper bundling device and that export by output optical fibre
Laser synthetic through the fused biconical taper bundling device and that export by output optical fibre becomes the divergent light source of similar pointolite at output terminal, in application, needing becomes parallel beam or focused beam to the divergent light source shaping, Output of laser becomes directional light after short focus lens, the output condenser lens is focused on light beam, and beam focus is fallen within the zone of light and atomic interaction;
(III), while reusing, finely tuned the collimation of laser beam
Because closing and opening of each laser instrument all can have some small differences, therefore, while reusing fused biconical taper optical-fiber bundling system, need to be finely tuned the collimation of laser beam, guarantee position and the collimation of light beam, now only need the adjusting knob of fine setting laser total reflective mirror, the clear aperature place that makes light beam get to the I diaphragm gets final product beam center and clear aperature center superposition.
Beneficial effect of the present invention
(i) the present invention utilize the fused biconical taper technology carry out the multi beam different wave length laser close bundle, make and close the restriction that the bundle technology is not subject to wavelength, enlarged the range of application of closing the bundle technology.(II) utilizes the fused biconical taper technology to carry out the bundle that closes of multiple laser, makes and closes the restriction that light beams no longer is subject to space, reduced the use of a large amount of optical device simultaneously, improved the stability of system, increased the security of system simultaneously.The use of (III) diaphragm, can reduce the threat of parasitic light to fiber end face around laser beam, extended fiber serviceable life, makes the light beam precise positioning simultaneously, when simplifying the operation, improved the repeatability of system.The lens that (IV) is coupled in fine device and coupling fiber device can be changed according to different beam qualities and function demand, make system more flexible, can be applicable in different laser systems.(V) the present invention is simple in structure, be easy to modularization, and system is simple to operate, more flexible.
The accompanying drawing explanation
Fig. 1 is that single unit system of the present invention forms schematic diagram;
Fig. 2 is that laser shaping of the present invention is coupled into fine device schematic diagram;
Fig. 3 is laser shaping fiber device schematic diagram of the present invention;
Fig. 4 is application connection diagram of the present invention.
Wherein:
1 laser shaping is coupled into fine device 2 input optical fibres
3 fused biconical taper bundling device 4 output optical fibres
5 laser shaping fiber device 6 I diaphragms
7 input shaper lens combination 8 input focus lens
9 incident optical holding frame 10 II diaphragms
The short focus lens of 11 output optical fibre holding frame 12
13 output Shaping lens combination 14 output condenser lenses
15 laser instrument 16 laser total reflective mirrors
17 atomic vapour stove 18 light and atom active regions
19 lens 20 bases
21 baffle plates.
Embodiment
Below, with reference to drawings and Examples, to a kind of different wave length multi-pass of the present invention laser is synthetic, with transmitting device and using method thereof, be elaborated:
As shown in Figures 1 to 3, a kind of different wave length multi-pass laser synthesizes and transmitting device, comprise that a plurality of laser shapings are coupled into fine device 1, the present embodiment is four, each laser shaping is coupled into fine device 1 and is communicated with fused biconical taper bundling device 3 by input optical fibre 2 respectively, and fused biconical taper bundling device 3 is communicated with laser shaping fiber device 5 by output optical fibre 4.
Wherein, laser shaping is coupled into fine device 1 and is included on same base 20 to keep at a certain distance away each other from left to right and is respectively arranged with I diaphragm 6, input shaper lens combination 7, input focus lens 8, incident optical holding frame 9 and II diaphragm 10, and input shaper lens combination 7 is comprised of two lens 19.
Wherein, laser shaping fiber device 5 is included on same base 20 to keep at a certain distance away each other from left to right and is respectively arranged with output optical fibre holding frame 11, short focus lens 12, output Shaping lens combination 13 and output condenser lens 14, and output Shaping lens combination 13 is comprised of two lens 19.
Input optical fibre 2 is placed on incident optical holding frame 9, makes the port of input optical fibre 2 be placed in the focus place of input focus lens 8.The output terminal of output optical fibre 4 is arranged in the front focus position of the short focus lens 12 of laser shaping fiber device 5.
Laser shaping is coupled into each element in fine device 1 and goes out each element center in laser shaping fiber device 5 respectively on same center line separately.
As shown in Figure 4, when the present invention in use, its annexation is: at laser shaping, be coupled into the laser instrument 15 that fine device 1 input end accesses respectively a plurality of output different wave lengths, the present embodiment is three, at laser instrument 15 and laser shaping, be coupled on the output light path of each laser instrument between fine device 1 be respectively arranged with two parallel to each other and become 45 with level
οthe laser total reflective mirror 16 at angle, and be coupled between fine device 1 baffle plate 21 is set at laser total reflective mirror 16 and laser shaping.The Shu Zaijing that intensifies after the output terminal shaping of laser shaping fiber device 5 exports light and the atom active region 18 that condenser lens 14 focuses in entering atom vapor stove 17, and the focus of output condenser lens 14 is positioned at light and atom active region 18.
Using method of the present invention comprises the following steps:
(i), while using for the first time, laser instrument 15 outgoing laser beams are collimated
The adjusting knob of regulating laser total reflective mirror 16 makes laser beam pass through I diaphragm 6 that two collimations in a distance are good and the clear aperature of II diaphragm 10, make the aperture center of I diaphragm 6, II diaphragm 10 coaxial with beam center, laser beam just becomes collimated light beam.Input shaper lens combination 7 after I diaphragm 6 is adjusted the laser beam spot size, and the light beam after adjustment focuses on through input focus lens 8, and focal length is selected according to beam quality and optical fiber parameter, and the coupling incident that the light beam after making to focus on meets optical fiber requires to determine.Three input optical fibres 2 are placed in respectively on incident optical holding frame 9 separately, the port of input optical fibre 2 is placed in the focus place of condenser lens 8, the adjusting knob of carefully regulating on optical fiber clamping frame 9 is (upper and lower, left and right, before and after three-dimensional translating regulate) and the adjusting knob of input focus lens 8 (upper and lower, the rotation of left and right is regulated), make focused beam be coupled into input optical fibre 2, and with laser powermeter, monitored after the output terminal of output optical fibre 4, need to be from low-power in adjusting laser enters fine process, progressively improve power, on each power level, regulate until the transfer efficiency maximum.
(II) carries out shaping to laser beam synthetic through fused biconical taper bundling device 3 and that export by output optical fibre 4
Laser through 3 outputs of fused biconical taper bundling device becomes the divergent light source of similar pointolite at output terminal, for meeting the power density requirement of light and atomic interaction, need to become parallel beam or focused beam to the divergent light source shaping.The output terminal of output optical fibre 4 is held on output optical fibre holding frame 11, add short focus lens 12 thereafter, make the output end face of output optical fibre 4 be positioned at the front focus place of short focus lens 12, Output of laser becomes directional light after short focus lens 12, after short focus lens 12, add shaping lens group 13 to be expanded or the bundle that contracts, then the requirement to hot spot according to experiment, after shaping lens group 13, add 14 pairs of light beams of condenser lens to be focused on, make beam focus fall within the zone of light and atomic interaction.
(III), while reusing, finely tuned the collimation of laser beam
Because closing and opening of each laser instrument all can have some small differences, therefore, while reusing fused biconical taper optical-fiber bundling system, need to be finely tuned the collimation of laser beam, guarantee position and the collimation of light beam.Now only need the adjusting knob of fine setting laser total reflective mirror 16, the clear aperature place that makes light beam get to I diaphragm 6 gets final product beam center and clear aperature center superposition, without lens and the optical fiber to back again, is regulated.
The course of work of the present invention:
Three by different dyes the dye laser 15 as actuating medium, export the laser of three kinds of different wave lengths, after optimizing laser power, with laser total reflective mirror 16, put up outer light path, and adjusting laser total reflective mirror 16, make beam collimation.After laser total reflective mirror 16, before being coupled into fine device 1, laser shaping puts a baffle plate, the translation baffle plate makes laser spill tens milliwatt laser from the edge of baffle plate, after I diaphragm 6, add input shaper lens combination 7 to adjust the laser beam spot size, light beam after adjustment focuses on through input focus lens 8, before not measuring laser and enter optical fiber with power score and the power of exporting after ECDC bundle optical-fiber bundling, under the monitoring of power meter, the adjusting knob of carefully regulating on incident optical holding frame 9 is (upper and lower, left and right, before and after three-dimensional translating regulate) and the adjusting knob of input focus lens 8 (upper and lower, the rotation of left and right is regulated), make focused beam be coupled into input optical fibre 2 and after 4 outputs of fused biconical taper bundling device 3 and output optical fibre, it is maximum that transfer efficiency reaches, then slowly baffle plate is pulled open, make the light that spills stronger, continuation is under the monitoring of power meter, repeat the adjusting of incident optical holding frame 9 and input focus lens 8 is carried out to the optimal coupling input efficiency, make optical-fiber bundling efficiency be issued to maximum at this power, continue to pull baffle plate, the repeated optimization step, until the whole energy of laser beam are coupled into fibre with maximal efficiency.Then the laser coupled that completes respectively successively other two dye lasers enters optical-fiber bundling device.
After three beams of laser all is coupled into fused biconical taper bundling device 3, the output terminal that fused biconical taper is closed to the output optical fibre 4 of beam system is fixed on output optical fibre holding frame 11, make light beam enter laser shaping fiber device 5, the output terminal of output optical fibre 4 is arranged in the front focus position of the short focus lens 12 of fiber device 5, the front and back of fine setting output optical fibre holding frame 11, make laser become directional light after short focus lens 12, enter output Shaping lens combination 13, according to application requirements, laser beam is expanded or the shaping of contracting bundle, laser beam after shaping focuses on and enters light and the atom active region 18 in atomic vapour stove 17 through output condenser lens 14 again, the focus of output condenser lens 14 is positioned at light and atom active region 18, complete the interaction experiment of light and atom.
The present invention is simple in structure, be easy to modularization, and system is simple to operate, more flexible, closes bundle efficiency and generally can reach more than 80%.
Claims (5)
1. a different wave length multi-pass laser synthesizes and transmitting device, it is characterized in that: comprise that a plurality of laser shapings are coupled into fine device (1), each laser shaping is coupled into fine device (1) and is communicated with fused biconical taper bundling device (3) by input optical fibre (2) respectively, fused biconical taper bundling device (3) is communicated with laser shaping fiber device (5) by output optical fibre (4), described laser shaping is coupled into fine device (1) and is included on same base (20) to keep at a certain distance away each other from left to right and is respectively arranged with I diaphragm (6), input shaper lens combination (7), input focus lens (8), incident optical holding frame (9) and II diaphragm (10), described laser shaping fiber device (5) is included on same base (20) to keep at a certain distance away each other from left to right and is respectively arranged with output optical fibre holding frame (11), short focus lens (12), output Shaping lens combination (13) and output condenser lens (14).
2. a kind of different wave length multi-pass laser according to claim 1 synthesizes and transmitting device, it is characterized in that: described input shaper lens combination (7) is comprised of two lens (19), and described output Shaping lens combination (13) is comprised of two lens (19).
3. a kind of different wave length multi-pass laser according to claim 1 synthesizes and transmitting device, it is characterized in that: described input optical fibre (2) incident end is placed on incident optical holding frame (9), make the port of input optical fibre (2) be placed in the focus place of input focus lens (8), the output terminal of described output optical fibre (4) is arranged on the fiber holding frame (11) of laser shaping fiber device (5), and fiber holding frame (11) is positioned at the front focus position of short focus lens (12).
4. the synthetic and transmitting device of a kind of different wave length multi-pass laser according to claim 1 is characterized in that: described laser shaping is coupled into each element in fine device (1) and goes out each element center in laser shaping fiber device (5) respectively on same center line separately.
5. with a kind of different wave length multi-pass laser claimed in claim 1, synthesize and transmitting device, its using method comprises the following steps:
(i), while using for the first time, laser instrument (15) outgoing laser beam is collimated
The adjusting knob of regulating laser total reflective mirror (16) makes I diaphragm (6) that laser beam gets well by collimation and the clear aperature of II diaphragm (10), make I diaphragm (6), the aperture center of II diaphragm (10) is coaxial with beam center, laser beam just becomes collimated light beam, after I diaphragm (6), add input shaper lens combination (7) in order to adjust the laser beam spot size, light beam after adjustment focuses on through input focus lens (8), focal spot is positioned on the incident optical end face, adjusting knob on careful adjusting incident optical holding frame (9) and the adjusting knob of input focus lens (8), make focused beam be coupled into input optical fibre (2), add the laser powermeter monitoring after the output terminal of output optical fibre (4), need to be from low-power in adjusting laser enters fine process, progressively improve power, until reach the transfer efficiency maximum,
(II) carries out shaping to the laser beam synthesized through fused biconical taper bundling device (3) and pass through output optical fibre (4) output
Synthesize and pass through through fused biconical taper bundling device (3) laser that output optical fibre (4) exports and become the divergent light source of similar pointolite at output terminal, in application, needing becomes parallel beam or focused beam to the divergent light source shaping, Output of laser becomes directional light after short focus lens (12), output condenser lens (14) is focused on light beam, and beam focus is fallen within the zone of light and atomic interaction;
(III), while reusing, finely tuned the collimation of laser beam
Because closing and opening of each laser instrument all can have some small differences, therefore, while reusing fused biconical taper optical-fiber bundling system, need to be finely tuned the collimation of laser beam, guarantee position and the collimation of light beam, now only need the adjusting knob of fine setting laser total reflective mirror (16), the clear aperature place that makes light beam get to I diaphragm (6) gets final product beam center and clear aperature center superposition.
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| CN104075211A (en) * | 2014-06-24 | 2014-10-01 | 华南理工大学 | Optical structure of automotive laser high-beam light |
| CN104570238A (en) * | 2015-02-16 | 2015-04-29 | 核工业理化工程研究院 | Ultraviolet and visible light multi-light-path laser synthesis and transmission device and using method thereof |
| CN104836119A (en) * | 2015-05-26 | 2015-08-12 | 深圳市创鑫激光股份有限公司 | Optical fiber coupled laser |
| CN106129788A (en) * | 2016-08-31 | 2016-11-16 | 华中科技大学 | A kind of based on multimode fibre watt of level laser fiber beam merging apparatus |
| CN106569331A (en) * | 2016-11-17 | 2017-04-19 | 上海无线电设备研究所 | Laser leading beacon optical system |
| CN106908947A (en) * | 2017-04-06 | 2017-06-30 | 青岛镭创光电技术有限公司 | Optical aiming device, firearms and control method |
| CN108961234A (en) * | 2018-06-29 | 2018-12-07 | 中国科学院光电技术研究所 | Transmission element defect detection device and method based on multi-wavelength iterative algorithm |
| CN109799617A (en) * | 2019-03-08 | 2019-05-24 | 北京镭创高科光电科技有限公司 | The even light shaping optical path of multi-wavelength and optical projection system |
| CN111258077A (en) * | 2020-02-07 | 2020-06-09 | 西北大学 | Laser beam combining device and method for rectangular light spots |
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| CN112636838A (en) * | 2020-12-20 | 2021-04-09 | 桂林电子科技大学 | Short-distance multi-wavelength multimode communication system |
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| CN104075211B (en) * | 2014-06-24 | 2016-10-05 | 华南理工大学 | A kind of optical texture of vehicle laser high beam |
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| CN104570238A (en) * | 2015-02-16 | 2015-04-29 | 核工业理化工程研究院 | Ultraviolet and visible light multi-light-path laser synthesis and transmission device and using method thereof |
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| CN106129788A (en) * | 2016-08-31 | 2016-11-16 | 华中科技大学 | A kind of based on multimode fibre watt of level laser fiber beam merging apparatus |
| CN106569331A (en) * | 2016-11-17 | 2017-04-19 | 上海无线电设备研究所 | Laser leading beacon optical system |
| CN106908947A (en) * | 2017-04-06 | 2017-06-30 | 青岛镭创光电技术有限公司 | Optical aiming device, firearms and control method |
| CN111712976B (en) * | 2018-02-14 | 2023-06-16 | 古河电气工业株式会社 | Semiconductor laser module |
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| CN111712976A (en) * | 2018-02-14 | 2020-09-25 | 古河电气工业株式会社 | Semiconductor laser module |
| CN108961234A (en) * | 2018-06-29 | 2018-12-07 | 中国科学院光电技术研究所 | Transmission element defect detection device and method based on multi-wavelength iterative algorithm |
| CN109799617A (en) * | 2019-03-08 | 2019-05-24 | 北京镭创高科光电科技有限公司 | The even light shaping optical path of multi-wavelength and optical projection system |
| CN111258077B (en) * | 2020-02-07 | 2021-06-08 | 西北大学 | Laser beam combining device and method for rectangular light spots |
| CN111258077A (en) * | 2020-02-07 | 2020-06-09 | 西北大学 | Laser beam combining device and method for rectangular light spots |
| CN112636838A (en) * | 2020-12-20 | 2021-04-09 | 桂林电子科技大学 | Short-distance multi-wavelength multimode communication system |
| CN113057732A (en) * | 2021-03-25 | 2021-07-02 | 哈尔滨医科大学 | Laser ablation catheter |
| CN113418681A (en) * | 2021-07-09 | 2021-09-21 | 江苏亮点光电研究有限公司 | Multithreading laser power measuring device suitable for laser aging test |
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