CN103018911A - Optical fiber laser synthesizer based on wavelength division multiplexing - Google Patents
Optical fiber laser synthesizer based on wavelength division multiplexing Download PDFInfo
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- CN103018911A CN103018911A CN2012105464450A CN201210546445A CN103018911A CN 103018911 A CN103018911 A CN 103018911A CN 2012105464450 A CN2012105464450 A CN 2012105464450A CN 201210546445 A CN201210546445 A CN 201210546445A CN 103018911 A CN103018911 A CN 103018911A
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Abstract
The invention provides an optical fiber laser synthesizer based on wavelength division multiplexing. The optical fiber laser synthesizer comprises a plurality of optical filters with different transmission wave bands and a plurality of reflecting mirrors, the optical filters are used for transmitting lasers of specific wave bands, the reflecting mirrors are used for changing directions of synthesized lasers, the plurality of optical filters with the different transmission wave bands reflect or transmit a plurality of lasers with different wave bands to synthesize a plurality of primary synthesizing modules and generate primary synthesized lights, two primary synthesizing modules synthesize a high-level synthesis module, and generated high-level synthesized lights serve as higher-level auxiliary synthesized lights to be further synthesized with high-level synthesized lights with other wave bands. According to the optical fiber laser synthesizer based on the wavelength division multiplexing, the optical filters with different transmission wave bands transmit lasers of specific wave bands and reflect the rest of lasers, reflecting times are effectively reduced, the reflecting loss is reduced, and thereby power of synthetic lasers is improved under same conditions.
Description
Technical field
The present invention relates to the Fiber laser technology field, particularly a kind of optical-fiber laser synthesizer based on wavelength-division multiplex.
Background technology
The high-power fiber laser of high-energy and fiber amplifier have a wide range of applications in industrial processes, health care, national defense and military etc. with advantages such as its good beam quality, efficient height, life-span length, compact conformations.Along with the expansion of application, the power of optical-fiber laser is had higher requirement.In order to realize the power expansion to fiber laser, except can be by the better laser instrument inner structure of design, also can by to multi-channel optical fibre laser synthesize realize.
The synthetic technology of optical-fiber laser commonly used mainly is divided into relevant synthetic and Incoherent beam combining at present.Relevant synthesizing is to superpose in the far field after the laser phase that a plurality of wavelength are identical locks, and this mode is comparatively harsh to the requirement of laser parameter, and beam quality is relatively poor, easily is disturbed.Incoherent beam combining comprises that Spectral beam combining, adaptive optics are synthetic, and wherein, adaptive optics is synthetic to focus on directly stack after the same point with hot spot, and the beam quality that this mode obtains is relatively poor, and optical system is complicated.Spectral beam combining namely utilizes the principle of wavelength-division multiplex to synthesize, and utilize the devices such as interference filter or grating that the laser of a plurality of different wave lengths is synthesized, but the cost of manufacture of grating is higher, and the way that can synthesize is limited.In addition, also have the cascade of the interference filter by free space to realize that the extensibility of closing bundle of multi-channel optical fibre laser instrument is better, but the method for traditional cascade is along with synthetic way increases, and the former roads order of reflection of laser on optical filter is more, and reflection loss is larger.Because single channel reflection of light increased frequency, so that total combined coefficient reduces, the laser power loss after synthesizing is more.
Summary of the invention
Purpose of the present invention is intended to solve at least one of above-mentioned technological deficiency.
For achieving the above object, the embodiment of one aspect of the present invention proposes a kind of optical-fiber laser synthesizer based on wavelength-division multiplex, comprising: the optical filter of a plurality of different transmission wave bands, for the laser of transmission specific band; A plurality of catoptrons, be used for changing the direction of synthetic laser, wherein, the synthetic a plurality of elementary synthesis modules of laser of the optical filter reflection of described a plurality of different transmission wave bands or a plurality of different-wavebands of transmission, and generate elementary synthetic light, two synthetic senior synthesis modules of described elementary synthesis module, and the senior synthetic light that generates is further synthetic as the senior synthetic light of the synthetic light of more higher leveled son and its all band.
The optical-fiber laser synthesizer based on wavelength-division multiplex according to the embodiment of the invention, optical filter by different transmission wave bands carries out transmission to the laser of specific band, and remaining laser reflects, effectively reduced order of reflection, reduce reflection loss, thereby improved the under equal conditions power of synthetic laser.
In one embodiment of the invention, described optical filter becomes with light path, described catoptron becomes suitable angle with light path, and the light path that makes each synthetic road laser can overlap during from last optical filter outgoing.
In one embodiment of the invention, described elementary optical filter can be spike interference filter, long wave pass filter, short wave pass filter.
In one embodiment of the invention, described senior optical filter is bandpass interference filter, long wave pass filter or short wave pass filter.
In one embodiment of the invention, described elementary synthesis module comprises elementary optical filter, and senior synthesis module comprises senior optical filter, wherein, the transmission wave band of described senior optical filter should comprise all wave bands of the synthetic light of a way, does not comprise all wave bands of the synthetic light of another way.
In one embodiment of the invention, described elementary synthesis module comprises elementary optical filter, and senior synthesis module comprises senior optical filter, and wherein, described optical filter closes bundle according to the arrangement of the elementary optical filter synthetic light of elementary son after to suitable combination.
In one embodiment of the invention, described optical filter is the optical filter of the high energy laser of anti-the high power.
In one embodiment of the invention, described catoptron has higher reflectivity to the optical-fiber laser of the wave band that will synthesize.
In one embodiment of the invention, described optical-fiber laser is produced by the high power ytterbium-doping optical fiber laser, wave band at 1000nm between the 1200nm.
The aspect that the present invention adds and advantage in the following description part provide, and part will become obviously from the following description, or recognize by practice of the present invention.
Description of drawings
Above-mentioned and/or the additional aspect of the present invention and advantage are from obviously and easily understanding becoming the description of embodiment below in conjunction with accompanying drawing, wherein:
Fig. 1 is according to an embodiment of the invention based on the synoptic diagram of the optical-fiber laser synthesizer of wavelength-division multiplex;
Fig. 2 is according to an embodiment of the invention based on the concrete exemplary plot of the optical-fiber laser synthesizer of wavelength-division multiplex.Among Fig. 2, the 1st, senior synthesis module, the 11st, elementary synthesis module, the 111st, wavelength is the optical-fiber laser of 1040nm, the 112nd, wavelength is the optical-fiber laser of 1045nm, the 113rd, wavelength is the optical-fiber laser of 1050nm, the 114th, centre of homology wavelength is the spike interference filter of 1045nm, the 115th, centre of homology wavelength is the spike interference filter of 1050nm, the 12nd, elementary synthesis module, the 121st, wavelength is the optical-fiber laser of 1055nm, the 122nd, wavelength is the optical-fiber laser of 1060nm, the 123rd, wavelength is the optical-fiber laser of 1065nm, the 124th, centre of homology wavelength is the spike interference filter of 1060nm, the 125th, centre of homology wavelength is the spike interference filter of 1065nm, the 13rd, the transmission wave band is the bandpass filter of 1040nm ~ 1065nm, the 2nd, senior synthesis module, the 21st, elementary synthesis module, the 211st, wavelength is the optical-fiber laser of 1070nm, the 212nd, wavelength is the optical-fiber laser of 1075nm, the 213rd, wavelength is the optical-fiber laser of 1080nm, the 214th, centre of homology wavelength is the spike interference filter of 1075nm, the 215th, centre of homology wavelength is the spike interference filter of 1080nm, the 22nd, elementary synthesis module, the 221st, wavelength is the optical-fiber laser of 1085nm, the 222nd, wavelength is the optical-fiber laser of 1090nm, the 223rd, wavelength is the optical-fiber laser of 1095nm, the 224th, centre of homology wavelength is the spike interference filter of 1090nm, the 225th, centre of homology wavelength is the spike interference filter of 1095nm, the 23rd, the transmission wave band is the bandpass filter of 1070nm ~ 1095nm, the 3rd, transmission peak wavelength is the bandpass filter of 1040 ~ 1095nm, and 4 and 5 is catoptrons.
Fig. 3 is in accordance with another embodiment of the present invention based on the exemplary plot of the optical-fiber laser synthesizer of wavelength-division multiplex.Among Fig. 3,4 and 5 is catoptrons, the 6th, senior synthesis module, the 61st, elementary synthesis module, the 611st, wavelength is the optical-fiber laser of 1040nm, the 612nd, wavelength is the optical-fiber laser of 1045nm, the 613rd, wavelength is the optical-fiber laser of 1050nm, the 614th, the transmission cutoff wavelength is the long wave pass filter of 1045nm, the 615th, the transmission cutoff wavelength is the long wave pass filter of 1050nm, 62 elementary synthesis modules, the 621st, wavelength is the optical-fiber laser of 1055nm, the 622nd, wavelength is the optical-fiber laser of 1060nm, the 623rd, wavelength is the optical-fiber laser of 1065nm, the 624th, the transmission cutoff wavelength is the long wave pass filter of 1060nm, the 625th, the transmission cutoff wavelength is the long wave pass filter of 1065nm, the 63rd, the transmission cutoff wavelength is the long wave pass filter of 1052nm, the 7th, senior synthesis module, the 71st, elementary synthesis module, the 711st, wavelength is the optical-fiber laser of 1070nm, the 712nd, wavelength is the optical-fiber laser of 1075nm, the 713rd, wavelength is the optical-fiber laser of 1080nm, the 714th, the transmission cutoff wavelength is the long wave pass filter of 1075nm, the 715th, the transmission cutoff wavelength is the long wave pass filter of 1080nm, 72 elementary synthesis modules, and the 721st, wavelength is the optical-fiber laser of 1085nm, the 722nd, wavelength is the optical-fiber laser of 1090nm, the 723rd, wavelength is the optical-fiber laser of 1095nm, the 724th, and centre of homology wavelength is the long wave pass filter of 1090nm, the 725th, the transmission cutoff wavelength is the long wave pass filter of 1095nm, the 73rd, the transmission cutoff wavelength is the long wave pass filter of 1082nm, the 8th, and the transmission cutoff wavelength is the long wave pass filter of 1067nm.
Embodiment
The below describes embodiments of the invention in detail, and the example of embodiment is shown in the drawings, and wherein identical or similar label represents identical or similar element or the element with identical or similar functions from start to finish.Be exemplary below by the embodiment that is described with reference to the drawings, only be used for explaining the present invention, and can not be interpreted as limitation of the present invention.
In description of the invention, it will be appreciated that term " first ", " second " only are used for describing purpose, and can not be interpreted as indication or hint relative importance or the implicit quantity that indicates indicated technical characterictic.Thus, one or more these features can be expressed or impliedly be comprised to the feature that is limited with " first ", " second ".In description of the invention, the implication of " a plurality of " is two or more, unless clear and definite concrete restriction is arranged in addition.
Embodiment 1:
Fig. 1 is according to an embodiment of the invention based on the schematic flow sheet that adopts spike interference filter and bandpass filter in the optical-fiber laser synthesizer of wavelength-division multiplex.Fig. 2 is in accordance with another embodiment of the present invention based on the concrete exemplary plot of the optical-fiber laser synthesizer of wavelength-division multiplex.Among the figure, the black cylinder is the optical filter of a plurality of different transmission wave bands, and arrow is laser.
As shown in Figure 1, the optical filter and a plurality of catoptron that comprise a plurality of different transmission wave bands according to the optical-fiber laser synthesizer based on wavelength-division multiplex of the embodiment of the invention, wherein, the synthetic a plurality of elementary synthesis modules of laser of the optical filter reflection of a plurality of different transmission wave bands or a plurality of different-wavebands of transmission, and generate elementary synthetic light, two synthetic senior synthesis modules of elementary synthesis module, and the senior synthetic light that generates is further synthetic as the senior synthetic light of the synthetic light of more higher leveled son and its all band.
Particularly, the optical filter of a plurality of different transmission wave bands is used for the laser of transmission specific band.
A plurality of catoptrons are for the direction that changes synthetic laser.
In one embodiment of the invention, elementary synthesis module is comprised of two optical filters, and the optical filter by two different transmission wave bands synthesizes elementary synthetic light to four bundle optical transmissions and reflection.
In one embodiment of the invention, two elementary synthetic light that generate by elementary synthesis module 1 and elementary synthesis module 2 after filtration mating plate synthesize senior synthetic light, and are wherein employed whole as senior synthesis module.
As depicted in figs. 1 and 2, the angle of each optical filter and catoptron and light path is 45 degree.Laser 111 in the transmission wave band of all optical filters, is not reflected by each optical filter in elementary synthesis module 1.Laser 112 is in the centre of homology wavelength of optical filter 114 and not in the transmission peak wavelength scope of thereafter optical filter 115, see through 114 after, by optical filter 115 reflections.Laser 113 is in the centre of homology wavelength of optical filter 115, sees through 115.3 road optical-fiber lasers see through optical filter 115 rear outputs as elementary synthesis module 11.Same principle, other 3 elementary synthesis modules synthesize according to identical principle, obtain four elementary synthetic light.The elementary synthetic light of 11 and 12 outputs synthesizes one tunnel senior synthetic light by bandpass filter 13.The elementary synthetic light of 21 and 22 outputs synthesizes the synthetic light of the senior son in another road by bandpass filter 23.The senior synthetic light of two-way synthesizes synthetic light by catoptron 4,5 light path of turning back by bandpass filter 3 again.
In one embodiment of the invention, if the transmissivity of the reflectivity of the reflected waveband of optical filter and transmission wave band is 99%, with synthetic 12 road optical-fiber lasers (each elementary synthesis module synthesizes 3 road light) of this structure, then combined coefficient is higher by 1.6% than the efficient of level association bundle.
In one embodiment of the invention, optical-fiber laser is produced by the high power ytterbium-doping optical fiber laser, to between the 1200nm, and optical filter is bandpass interference filter, long wave pass filter or short wave pass filter to wave band at 1000nm, thereby can carry out transmission to the optical-fiber laser of different-waveband.
Embodiment 2:
Fig. 3 is in accordance with another embodiment of the present invention based on the exemplary plot of the optical-fiber laser synthesizer of wavelength-division multiplex.As shown in Figure 3, the angle of each optical filter and catoptron and light path is 45 degree.Laser 611 is not in elementary synthesis module in the transmission wave band of all optical filters, be reflected by each optical filter, laser 612 is in the transmission wave band of optical filter 614 and not in the transmission peak wavelength scope of thereafter optical filter, after seeing through 614, by optical filter 615 reflections, laser 613 is in the transmission wave band of optical filter 615, sees through 615.3 road optical-fiber lasers see through optical filter 615 rear outputs as elementary synthesis module 61, and other 3 elementary synthetic light close bundle according to identical principle, obtain four elementary synthetic light.The elementary synthetic light of 61 and 62 outputs synthesizes one tunnel senior synthetic light by long wave pass filter 63.The elementary synthetic light of 71 and 72 outputs synthesizes the senior synthetic light in another road by long wave pass filter 73.The senior synthetic light of two-way synthesizes synthetic light by catoptron 4,5 light path of turning back by long wave pass filter 3 again.
The optical-fiber laser synthesizer based on wavelength-division multiplex according to the embodiment of the invention, optical filter by different transmission wave bands carries out transmission to the laser of specific band, and remaining laser reflects, effectively reduced order of reflection, reduce reflection loss, thereby improved the under equal conditions power of synthetic laser.
Although the above has illustrated and has described embodiments of the invention, be understandable that, above-described embodiment is exemplary, can not be interpreted as limitation of the present invention, those of ordinary skill in the art can change above-described embodiment in the situation that does not break away from principle of the present invention and aim within the scope of the invention, modification, replacement and modification.
Claims (9)
1. the optical-fiber laser synthesizer based on wavelength-division multiplex is characterized in that, comprising:
The optical filter of a plurality of different transmission wave bands is for the laser of transmission specific band;
A plurality of catoptrons are for the direction that changes synthetic laser;
Wherein, the synthetic a plurality of elementary synthesis modules of laser of the optical filter reflection of described a plurality of different transmission wave bands or a plurality of different-wavebands of transmission, and generate elementary synthetic light, two synthetic senior synthesis modules of described elementary synthesis module, and the senior synthetic light that generates is further synthetic as the senior synthetic light of the synthetic light of more higher leveled son and its all band.
2. the optical-fiber laser synthesizer based on wavelength-division multiplex as claimed in claim 1 is characterized in that, described optical filter becomes with light path, described catoptron becomes suitable angle with light path, and the light path that makes each synthetic road laser overlaps during from last optical filter outgoing.
3. the optical-fiber laser synthesizer based on wavelength-division multiplex as claimed in claim 1 is characterized in that, described elementary optical filter is spike interference filter, long wave pass filter or short wave pass filter.
4. such as the described optical-fiber laser synthesizer based on wavelength-division multiplex of claim 1-3, it is characterized in that described senior optical filter is bandpass interference filter, long wave pass filter or short wave pass filter.
5. the optical-fiber laser synthesizer based on wavelength-division multiplex as claimed in claim 1, it is characterized in that, described elementary synthesis module comprises elementary optical filter, senior synthesis module comprises senior optical filter, wherein, the transmission wave band of described senior optical filter should comprise all wave bands of the synthetic light of a way, does not comprise all wave bands of the synthetic light of another way.
6. the optical-fiber laser synthesizer based on wavelength-division multiplex as claimed in claim 1, it is characterized in that, described elementary synthesis module comprises elementary optical filter, senior synthesis module comprises senior optical filter, wherein, described optical filter closes bundle according to the arrangement of the elementary optical filter synthetic light of elementary son after to suitable combination.
7. the optical-fiber laser synthesizer based on wavelength-division multiplex as claimed in claim 1 is characterized in that, described optical filter is the optical filter of the high energy laser of anti-the high power.
8. such as the described optical-fiber laser synthesizer based on wavelength-division multiplex of claim 1-7, it is characterized in that described catoptron has higher reflectivity to the optical-fiber laser of the wave band that will synthesize.
9. such as the described optical-fiber laser synthesizer based on wavelength-division multiplex of claim 1-8, it is characterized in that described optical-fiber laser is produced by the high power ytterbium-doping optical fiber laser, wave band at 1000nm between the 1200nm.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105846308A (en) * | 2016-05-31 | 2016-08-10 | 南京理工大学 | Spectrum synthesis device and method based on 45-degree incident dichroscope |
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| US20060023173A1 (en) * | 2004-07-30 | 2006-02-02 | Aram Mooradian | Projection display apparatus, system, and method |
| CN1773359A (en) * | 2004-11-12 | 2006-05-17 | 中国科学院光电技术研究所 | Efficient laser frequency doubler |
| US20070114362A1 (en) * | 2005-11-23 | 2007-05-24 | Illumina, Inc. | Confocal imaging methods and apparatus |
| CN101738618A (en) * | 2009-12-24 | 2010-06-16 | 武汉大学 | Multispectral earth observation laser radar system |
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Patent Citations (6)
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| CN85103690A (en) * | 1985-05-15 | 1986-11-12 | 上海交通大学 | Real time pseudocolour coding device with three channels |
| CN1563925A (en) * | 2004-03-23 | 2005-01-12 | 天津大学 | Whole field optical measuring method for high speed complex flow field, and its measurer |
| US20060023173A1 (en) * | 2004-07-30 | 2006-02-02 | Aram Mooradian | Projection display apparatus, system, and method |
| CN1773359A (en) * | 2004-11-12 | 2006-05-17 | 中国科学院光电技术研究所 | Efficient laser frequency doubler |
| US20070114362A1 (en) * | 2005-11-23 | 2007-05-24 | Illumina, Inc. | Confocal imaging methods and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105846308A (en) * | 2016-05-31 | 2016-08-10 | 南京理工大学 | Spectrum synthesis device and method based on 45-degree incident dichroscope |
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Effective date of registration: 20180504 Address after: 102200 building 32, Zhongyuan Yun Yuan Garden, 79 baton West Road, Changping District, Beijing. Patentee after: Beijing Tongfang Huaguang System Technology Co., Ltd. Address before: 100084 Haidian District 100084-82 mailbox in Beijing Patentee before: Tsinghua University |