CN103064157A - Multichannel laser fiber coupling device - Google Patents
Multichannel laser fiber coupling device Download PDFInfo
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- CN103064157A CN103064157A CN2013100008600A CN201310000860A CN103064157A CN 103064157 A CN103064157 A CN 103064157A CN 2013100008600 A CN2013100008600 A CN 2013100008600A CN 201310000860 A CN201310000860 A CN 201310000860A CN 103064157 A CN103064157 A CN 103064157A
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Abstract
The invention discloses a multichannel laser fiber coupling device. The multichannel laser fiber coupling device comprises coupling mirrors (4) arranged on more than two paths of incidence laser (1) optical paths in parallel. An optical axis of the coupling mirrors (4) is parallel to the incidence laser (1). The multichannel laser fiber coupling device further comprises optical fiber (5) in series connection with the output ends of the coupling mirrors (4). The input ends of the coupling mirrors (4) are in series connection with a prism set (3) fixed on a motor spindle (7). The motor spindle (7) and the input optical paths of the coupling mirrors (4) are coaxial. The prism set (3) is composed of more than two parallelogram prisms (2). The longer sides of the parallelogram prisms are parallel to the motor spindle (7) and acute angles are 45 degrees. Incidence points of the more than two paths of incidence laser (1) are distributed in a circumference. The circle center of the circumference is the motor spindle (7) and the radial length is length of the longer sides of the parallelogram prisms. Input ends of each laser of the more than two paths of incidence laser (1) are electrically connected with the output end of a laser power supply controller (6). The multichannel laser fiber coupling device can be widely applied to fields in need of high-power optical fiber output.
Description
Technical field
The present invention relates to a kind of fiber coupling device, especially a kind of multi-path laser fiber coupling device.
Background technology
At present, the high power pulsed laser of optical fiber output is used for the laser lithotripsy of the welding of industry and cutting, medical field and surgical cut etc. more and more widely.Based on the restriction of single channel laser output power, people have researched and developed the multi-path laser coupling technique, such as the two-way laser fiber output coupler that has used in the recent period.It is to be provided with its optical axis coupling mirror parallel with incident laser in the be parallel to each other light path of the incident laser propagated of two-way, and the optical fiber that is serially connected with the coupling mirror output terminal.The output though this laser fiber output coupler can be coupled two-way laser effectively, but still exist the deficiency that is difficult to improve significantly the fiber-optic output laser power, use holmium laser to use in the further expansion in the fields such as rubble thereby restricted.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of rational in infrastructure for overcoming weak point of the prior art, the much higher road of coupling efficiency laser fibre-optical coupling device.
For solving technical matters of the present invention, the technical scheme that adopts is: the multi-path laser fiber coupling device comprises its optical axis coupling mirror parallel with incident laser that places on the above incident laser light path of the two-way that parallels, and the optical fiber that is serially connected with the coupling mirror output terminal, particularly
The input end of described coupling mirror is serially connected with the prism group that is fixed on the machine shaft;
The input light path of described machine shaft and coupling mirror is coaxial;
Described prism group is comprised of the parallelogram prism more than two, and the long limit of described parallelogram prism is perpendicular to machine shaft, and its acute angle is 45 degree;
The incidence point of the above incident laser of described two-way is distributed in take machine shaft as the center of circle, grows the length on limit on the circumference of radius take the parallelogram prism;
The input end of each laser instrument of the above incident laser of described emission two-way is electrically connected with the output terminal of laser power controller.
As the further improvement of multi-path laser fiber coupling device, described parallelogram prism is white stone parallelogram prism; The output terminal of described laser power controller is electrically connected with the input end of the motor of drive motor rotating shaft; The length on the long limit of described parallelogram prism is 4cm; The rotating speed of described machine shaft is 10r/s; Described incident laser is four the tunnel, and the pulsewidth of its every road incident laser is that 300～600us, repetition frequency are 10 times/s.
Beneficial effect with respect to prior art is, employing is at its optical axis coupling mirror parallel with incident laser that places on the above incident laser light path of the two-way that parallels, and be serially connected with on the basis of optical fiber of coupling mirror output terminal, input end in coupling mirror is serially connected with the prism group that is fixed on the machine shaft again, wherein, the input light path of machine shaft and coupling mirror is coaxial, the prism group is comprised of the parallelogram prism more than two, the long limit of parallelogram prism is perpendicular to machine shaft, and its acute angle is 45 degree, and the incidence point that makes the above incident laser of two-way is distributed in take machine shaft as the center of circle, grow the length on limit on the circumference of radius take the parallelogram prism, to launch simultaneously the technical scheme that the input end of each laser instrument of the above incident laser of two-way is electrically connected with the output terminal of laser power controller, by controlling the burst length of each laser instrument output, be able to the pulse incident laser more than the two-way is carried out in an orderly manner pulse sorting and is coupled into optical fiber within the unit interval, namely be equivalent within the unit interval, improve the repetition rate of laser instrument, thereby improved widely the general power of the laser of optical fiber output.
Further embodiment as beneficial effect, the one, the parallelogram prism is preferably white stone parallelogram prism, both utilized fully the advantage of the wide 4500nm of reaching of light-wave band that white stone has, temperature coefficient because of white stone is little again, has not needed its characteristics of cooling off have been guaranteed the reliable and stable of device work.The 2nd, the output terminal of preferred laser power controller is electrically connected with the input end of the motor of drive motor rotating shaft, is more conducive to the pulse incident laser more than the two-way is fully sorted within the unit interval in order.The 3rd, the length on the long limit of parallelogram prism is preferably 4cm, except the installation of being convenient to drive motor, also makes it that less volume is arranged.The 4th, the rotating speed of machine shaft is preferably 10r/s, and is not only applicable, shakes also little.The 5th, incident laser is preferably four the tunnel, the pulsewidth of its every road incident laser is preferably 300～600us, repetition frequency is preferably 10 times/s, and this selection of having optimized is beneficial to and fully realizes the single fiber coupling.
Description of drawings
Below in conjunction with accompanying drawing optimal way of the present invention is described in further detail.
Fig. 1 is a kind of basic structure schematic diagram of the present invention.
Fig. 2 is a kind of incident laser direction schematic views of the prism group among Fig. 1 when being comprised of four parallelogram prisms.
Fig. 3 is a kind of pulse sequence schematic diagram of four road incident lasers.
Fig. 4 is that the present invention is with the pulse sequence schematic diagram of the rear output of four tunnel pulse incident lasers coupling shown in Figure 3.
Embodiment
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, being constructed as follows of multi-path laser fiber coupling device: be equipped with successively the prism group 3, coupling mirror 4 and the optical fiber 5 that are fixed on the machine shaft 7 on the direction of propagation of incident laser 1.Wherein:
Incident laser 1 for be parallel to each other four the tunnel, the pulsewidth of every road incident laser 1 is that 300～600us, repetition frequency are 10 times/s;
Prism group 3 is each other an angle of 90 degrees setting by four parallelogram prisms 2 and forms, the long limit of every parallelogram prism 2 wherein is all perpendicular to machine shaft 7, and its acute angle is 45 degree, every parallelogram prism 2 is white stone parallelogram prism, and the length on its long limit is 4cm;
Every road of four road incident lasers 1 all is distributed in take machine shaft 7 as the center of circle, grows the length on limits on the circumference of radius take parallelogram prism 2 in the incidence point on the prism group 3;
The input end of launching each laser instrument of four road incident lasers 1 all is electrically connected with the output terminal of laser power controller 6, and the output terminal of laser power controller 6 is electrically connected with the input end of the motor of drive motor rotating shaft 7.
During use, the present invention is under the control of laser power controller 6, every road incident laser 1 is according to pulse sequence emission shown in Figure 3, because four road incident lasers 1 are equally spaced to be distributed in take machine shaft 7 as the center of circle, take the length on parallelogram prism 2 long limits above the circumference of radius, then the laser pulse time interval of output also equates from optical fiber 5, and namely the output terminal in optical fiber 5 obtains the as shown in Figure 4 high power laser light output of intensive pulse sequence.Pulsewidth based on every road incident laser 1 is that 300～600us, repetition frequency are 10 times/s, the rotating speed of machine shaft 7 is 10r/s, then machine shaft 7 turns over 0.0377 radian within the time of 600us, this moment, the length because of parallelogram prism 2 long limits was 4cm, then its translation distance is 0.15cm, therefore realized the single fiber coupling fully.
Obviously, those skilled in the art can carry out various changes and modification to multi-path laser fiber coupling device of the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (6)
1. multi-path laser fiber coupling device, comprise its optical axis coupling mirror (4) parallel with incident laser (1) that places on the above incident laser of the two-way that parallels (1) light path, and the optical fiber (5) that is serially connected with coupling mirror (4) output terminal, it is characterized in that:
The input end of described coupling mirror (4) is serially connected with the prism group (3) that is fixed on the machine shaft (7);
Described machine shaft (7) is coaxial with the input light path of coupling mirror (4);
Described prism group (3) is comprised of the parallelogram prism (2) more than two, and the long limit of described parallelogram prism (2) is perpendicular to machine shaft (7), and its acute angle is 45 degree;
The incidence point of the above incident laser of described two-way (1) on prism group (3) be distributed in take machine shaft (7) as the center of circle, take the length on the long limit of parallelogram prism (2) on the circumference of radius;
The input end of each laser instrument of the above incident laser of described emission two-way (1) is electrically connected with the output terminal of laser power controller (6).
2. multi-path laser fiber coupling device according to claim 1 is characterized in that parallelogram prism (2) is white stone parallelogram prism.
3. multi-path laser fiber coupling device according to claim 2 is characterized in that the output terminal of laser power controller (6) is electrically connected with the input end of the motor of drive motor rotating shaft (7).
4. multi-path laser fiber coupling device according to claim 3 is characterized in that the length on the long limit of parallelogram prism (2) is 4cm.
5. multi-path laser fiber coupling device according to claim 4, the rotating speed that it is characterized in that machine shaft (7) is 10r/s.
6. multi-path laser fiber coupling device according to claim 5 is characterized in that incident laser (1) is four the tunnel, and the pulsewidth of its every road incident laser (1) is that 300～600us, repetition frequency are 10 times/s.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100008600A CN103064157A (en) | 2013-01-05 | 2013-01-05 | Multichannel laser fiber coupling device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013100008600A CN103064157A (en) | 2013-01-05 | 2013-01-05 | Multichannel laser fiber coupling device |
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| CN103064157A true CN103064157A (en) | 2013-04-24 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802983A (en) * | 2018-07-02 | 2018-11-13 | 张琴 | The optic structure and processing method of miniature double parallel reflecting surface |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3924937A (en) * | 1974-01-30 | 1975-12-09 | Jersey Nuclear Avco Isotopes | Method and apparatus for sequentially combining pulsed beams of radiation |
| US5375132A (en) * | 1993-05-05 | 1994-12-20 | Coherent, Inc. | Solid state laser with interleaved output |
| CN101256255A (en) * | 2008-03-21 | 2008-09-03 | 北京理工大学 | System for joining light path of multiplex laser |
| US20100172614A1 (en) * | 2009-01-05 | 2010-07-08 | Yokogawa Electric Corporation | Bidirectional optical module and optical time domain reflectometer |
| US20110134949A1 (en) * | 2008-04-04 | 2011-06-09 | Melles Griot, Inc. | Compact, thermally stable multi-laser engine |
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2013
- 2013-01-05 CN CN2013100008600A patent/CN103064157A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3924937A (en) * | 1974-01-30 | 1975-12-09 | Jersey Nuclear Avco Isotopes | Method and apparatus for sequentially combining pulsed beams of radiation |
| US5375132A (en) * | 1993-05-05 | 1994-12-20 | Coherent, Inc. | Solid state laser with interleaved output |
| CN101256255A (en) * | 2008-03-21 | 2008-09-03 | 北京理工大学 | System for joining light path of multiplex laser |
| US20110134949A1 (en) * | 2008-04-04 | 2011-06-09 | Melles Griot, Inc. | Compact, thermally stable multi-laser engine |
| US20100172614A1 (en) * | 2009-01-05 | 2010-07-08 | Yokogawa Electric Corporation | Bidirectional optical module and optical time domain reflectometer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108802983A (en) * | 2018-07-02 | 2018-11-13 | 张琴 | The optic structure and processing method of miniature double parallel reflecting surface |
| CN108802983B (en) * | 2018-07-02 | 2020-12-08 | 张琴 | Micro optical device structure with double parallel reflecting surfaces and processing method |
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Application publication date: 20130424 |