CN103018911B - 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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- CN103018911B CN103018911B CN201210546445.0A CN201210546445A CN103018911B CN 103018911 B CN103018911 B CN 103018911B CN 201210546445 A CN201210546445 A CN 201210546445A CN 103018911 B CN103018911 B CN 103018911B
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- 230000005540 biological transmission Effects 0.000 claims abstract description 45
- 230000002194 synthesizing effect Effects 0.000 claims abstract description 6
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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 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 with its good beam quality, the advantage such as efficiency is high, the life-span is long, compact conformation, have a wide range of applications in industrial processes, health care, national defense and military etc.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 the better laser instrument inner structure of design can be passed through, also by realizing the synthesis of multi-channel optical fibre laser.
The technology of optical-fiber laser synthesis conventional at present is mainly divided into optics coherence tomography and Incoherent beam combining.Optics coherence tomography is which is comparatively harsh to the requirement of laser parameter, and beam quality is poor, is easily disturbed in far field superposition after being locked by laser phase identical for multiple wavelength.Incoherent beam combining comprises Spectral beam combining, adaptive optics synthesis, and wherein, directly superpose after hot spot is focused on same point by adaptive optics synthesis, the beam quality which obtains is poor, and optical system is complicated.Namely Spectral beam combining utilizes the principle of wavelength-division multiplex to synthesize, and utilize the device such as interference filter or grating to be synthesized by the laser of multiple different wave length, but the cost of manufacture of grating is higher, the way that can synthesize is limited.In addition, also have that to realize the extensibility of the conjunction bundle of multi-channel optical fibre laser instrument by the cascade of the interference filter of free space better, but the method for traditional cascade increases along with synthesis way, and the former roads order of reflection of laser on optical filter is more, and reflection loss is larger.Because the order of reflection of single channel light increases, total combined coefficient is reduced, and the laser power loss after synthesis is more.
Summary of the invention
Object of the present invention is intended at least solve 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 multiple different transmission wave band, for the laser of transmission specific band; Multiple catoptron, for changing the direction of synthetic laser, wherein, the optical filter reflection of described multiple different transmission wave band or the multiple elementary synthesis module of Laser synthesizing of the multiple different-waveband of transmission, and generate elementary synthesis light, two described elementary synthesis modules synthesize a senior synthesis module, and the senior synthesis light that the senior synthesis light generated synthesizes light and its all band as more higher leveled son synthesizes further.
According to the optical fiber laser synthesizer based on wavelength-division multiplex of the embodiment of the present invention, by the optical filter of different transmission wave band, transmission is carried out to the laser of specific band, and remaining laser reflects, effectively decrease order of reflection, reduce reflection loss, thus improve the power of under equal conditions 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 of each road laser of synthesis can be overlapped from during 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 a way synthesis light, does not comprise all wave bands of another way synthesis light.
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 carries out conjunction bundle according to the arrangement of elementary optical filter to the elementary son synthesis light after suitable combination.
In one embodiment of the invention, described optical filter is the optical filter of the high energy laser of resistance to high power.
In one embodiment of the invention, the optical-fiber laser of described catoptron to the wave band that will synthesize has higher reflectivity.
In one embodiment of the invention, described optical-fiber laser is produced by high power ytterbium-doping optical fiber laser, and wave band is between 1000nm to 1200nm.
The aspect that the present invention adds and advantage will part provide in the following description, and part will become obvious from the following description, or be recognized by practice of the present invention.
Accompanying drawing explanation
The present invention above-mentioned and/or additional aspect and advantage will become obvious and easy understand from the following description of the accompanying drawings of embodiments, wherein:
Fig. 1 is according to an embodiment of the invention based on the schematic 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.In Fig. 2, 1 is senior synthesis module, 11 is elementary synthesis modules, 111 is wavelength is the optical-fiber laser of 1040nm, 112 is wavelength is the optical-fiber laser of 1045nm, 113 is wavelength is the optical-fiber laser of 1050nm, 114 is centre of homology wavelength is the spike interference filter of 1045nm, 115 is centre of homology wavelength is the spike interference filter of 1050nm, 12 is elementary synthesis modules, 121 is wavelength is the optical-fiber laser of 1055nm, 122 is wavelength is the optical-fiber laser of 1060nm, 123 is wavelength is the optical-fiber laser of 1065nm, 124 is centre of homology wavelength is the spike interference filter of 1060nm, 125 is centre of homology wavelength is the spike interference filter of 1065nm, 13 is transmission wave bands is the bandpass filter of 1040nm ~ 1065nm, 2 is senior synthesis modules, 21 is elementary synthesis modules, 211 is wavelength is the optical-fiber laser of 1070nm, 212 is wavelength is the optical-fiber laser of 1075nm, 213 is wavelength is the optical-fiber laser of 1080nm, 214 is centre of homology wavelength is the spike interference filter of 1075nm, 215 is centre of homology wavelength is the spike interference filter of 1080nm, 22 is elementary synthesis modules, 221 is wavelength is the optical-fiber laser of 1085nm, 222 is wavelength is the optical-fiber laser of 1090nm, 223 is wavelength is the optical-fiber laser of 1095nm, 224 is centre of homology wavelength is the spike interference filter of 1090nm, 225 is centre of homology wavelength is the spike interference filter of 1095nm, 23 is transmission wave bands is the bandpass filter of 1070nm ~ 1095nm, 3 is transmission peak wavelengths is the bandpass filter of 1040 ~ 1095nm, 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.In Fig. 3, 4 and 5 is catoptrons, 6 is senior synthesis modules, 61 is elementary synthesis modules, 611 is wavelength is the optical-fiber laser of 1040nm, 612 is wavelength is the optical-fiber laser of 1045nm, 613 is wavelength is the optical-fiber laser of 1050nm, 614 is transmission cutoff wavelengths is the long wave pass filter of 1045nm, 615 is transmission cutoff wavelengths is the long wave pass filter of 1050nm, 62 elementary synthesis modules, 621 is wavelength is the optical-fiber laser of 1055nm, 622 is wavelength is the optical-fiber laser of 1060nm, 623 is wavelength is the optical-fiber laser of 1065nm, 624 is transmission cutoff wavelengths is the long wave pass filter of 1060nm, 625 is transmission cutoff wavelengths is the long wave pass filter of 1065nm, 63 is transmission cutoff wavelengths is the long wave pass filter of 1052nm, 7 is senior synthesis modules, 71 is elementary synthesis modules, 711 is wavelength is the optical-fiber laser of 1070nm, 712 is wavelength is the optical-fiber laser of 1075nm, 713 is wavelength is the optical-fiber laser of 1080nm, 714 is transmission cutoff wavelengths is the long wave pass filter of 1075nm, 715 is transmission cutoff wavelengths is the long wave pass filter of 1080nm, 72 elementary synthesis modules, 721 is wavelength is the optical-fiber laser of 1085nm, 722 is wavelength is the optical-fiber laser of 1090nm, 723 is wavelength is the optical-fiber laser of 1095nm, 724 is centre of homology wavelength is the long wave pass filter of 1090nm, 725 is transmission cutoff wavelengths is the long wave pass filter of 1095nm, 73 is transmission cutoff wavelengths is the long wave pass filter of 1082nm, 8 is transmission cutoff wavelengths is the long wave pass filter of 1067nm.
Embodiment
Be described below in detail embodiments of the invention, the example of embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
In describing the invention, it is to be appreciated that term " first ", " second " only for describing object, and can not be interpreted as instruction or hint relative importance or the implicit quantity indicating indicated technical characteristic.Thus, be limited with " first ", the feature of " second " can express or impliedly comprise one or more these features.In describing the invention, the implication of " multiple " is two or more, unless otherwise expressly limited specifically.
Embodiment 1:
Fig. 1 is according to an embodiment of the invention based on the schematic flow sheet adopting 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.In figure, black cylinder is the optical filter of multiple different transmission wave band, and arrow is laser.
As shown in Figure 1, the optical filter of multiple different transmission wave band and multiple catoptron is comprised according to the optical fiber laser synthesizer based on wavelength-division multiplex of the embodiment of the present invention, wherein, the optical filter reflection of multiple different transmission wave band or the multiple elementary synthesis module of Laser synthesizing of the multiple different-waveband of transmission, and generate elementary synthesis light, two elementary synthesis modules synthesize a senior synthesis module, and the senior synthesis light that the senior synthesis light generated synthesizes light and its all band as more higher leveled son synthesizes further.
Particularly, the optical filter of multiple different transmission wave band is used for the laser of transmission specific band.
Multiple catoptron, for changing the direction of synthetic laser.
In one embodiment of the invention, elementary synthesis module is made up of two optical filters, synthesizes elementary synthesis light by the transmittance and reflectance of optical filter to four bundle light of two different transmission wave bands.
In one embodiment of the invention, two that are generated by elementary synthesis module 1 and elementary synthesis module 2 elementary synthesis light after filtration mating plate synthesizes senior synthesis light, wherein used 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 not in elementary synthesis module 1 all optical filters transmission wave band in, reflected by each optical filter.Laser 112 is in the centre of homology wavelength of optical filter 114 and not within the scope of the transmission peak wavelength of optical filter 115 thereafter, after 114, is reflected by optical filter 115.Laser 113 is in the centre of homology wavelength of optical filter 115, through 115.3 road optical-fiber lasers through after optical filter 115 as the output of elementary synthesis module 11.Same principle, other 3 elementary synthesis modules synthesize according to identical principle, obtain four elementary synthesis light.11 and the 12 elementary synthesis light exported synthesize the senior synthesis light in road by bandpass filter 13.21 and the 22 elementary synthesis light exported synthesize the senior son synthesis in another road light by bandpass filter 23.The senior synthesis light of two-way is turned back after light path by catoptron 4,5 and is synthesized synthesis light through bandpass filter 3.
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%, synthesize 12 road optical-fiber lasers (each elementary synthesis module synthesizes 3 road light) by this structure, then combined coefficient is higher than the efficiency of level association bundle by 1.6%.
In one embodiment of the invention, optical-fiber laser is produced by high power ytterbium-doping optical fiber laser, wave band is between 1000nm to 1200nm, and optical filter is bandpass interference filter, long wave pass filter or short wave pass filter, thus 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 not in elementary synthesis module all optical filters transmission wave band in, reflected by each optical filter, laser 612 be in optical filter 614 transmission wave band and not within the scope of the transmission peak wavelength of optical filter thereafter, after 614, reflected by optical filter 615, laser 613 is in the transmission wave band of optical filter 615, through 615.3 road optical-fiber lasers through after optical filter 615 as the output of elementary synthesis module 61, other 3 elementary synthesis light carry out conjunction bundle according to identical principle, obtain four elementary synthesis light.61 and the 62 elementary synthesis light exported synthesize the senior synthesis light in road by long wave pass filter 63.71 and the 72 elementary synthesis light exported synthesize the senior synthesis light in another road by long wave pass filter 73.The senior synthesis light of two-way is turned back after light path by catoptron 4,5 and is synthesized synthesis light through long wave pass filter 3.
According to the optical fiber laser synthesizer based on wavelength-division multiplex of the embodiment of the present invention, by the optical filter of different transmission wave band, transmission is carried out to the laser of specific band, and remaining laser reflects, effectively decrease order of reflection, reduce reflection loss, thus improve the power of under equal conditions synthetic laser.
Although illustrate and describe embodiments of the invention above, 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 within the scope of the invention when not departing from principle of the present invention and aim, revising, replacing and modification.
Claims (7)
1. based on an optical fiber laser synthesizer for wavelength-division multiplex, it is characterized in that, comprising:
The optical filter of multiple different transmission wave band, for the laser of transmission specific band;
Two catoptrons, for changing the direction of synthetic laser;
Wherein, the optical filter reflection of described multiple different transmission wave band or the multiple elementary synthesis module of Laser synthesizing of the multiple different-waveband of transmission, and generate elementary synthesis light, two described elementary synthesis modules synthesize a senior synthesis module, two senior synthesis modules generate the more higher leveled sub more higher leveled synthesis light synthesizing light and its all band through described two catoptrons reflection and synthesize further
Described optical filter becomes with light path, described catoptron and light path angle at 45 °, and the light path of each road laser of synthesis is overlapped from during last optical filter outgoing,
Described elementary synthesis module comprises elementary optical filter, and senior synthesis module comprises senior optical filter, and wherein, the transmission wave band of described senior optical filter should comprise all wave bands of a way synthesis light, does not comprise all wave bands of another way synthesis light.
2., as claimed in claim 1 based on the optical fiber laser synthesizer of wavelength-division multiplex, it is characterized in that, described elementary optical filter is spike interference filter, long wave pass filter or short wave pass filter.
3., as claimed in claim 1 or 2 based on the optical fiber laser synthesizer of wavelength-division multiplex, it is characterized in that, described senior optical filter is bandpass interference filter, long wave pass filter or short wave pass filter.
4. as claimed in claim 1 based on the optical fiber laser synthesizer of wavelength-division multiplex, it is characterized in that, described elementary synthesis module comprises elementary optical filter, senior synthesis module comprises senior optical filter, wherein, described optical filter carries out conjunction bundle according to the arrangement of elementary optical filter to the elementary son synthesis light after suitable combination.
5., as claimed in claim 1 based on the optical fiber laser synthesizer of wavelength-division multiplex, it is characterized in that, described optical filter is the optical filter of the high energy laser of resistance to high power.
6., as claimed in claim 1 or 2 based on the optical fiber laser synthesizer of wavelength-division multiplex, it is characterized in that, the optical-fiber laser of described catoptron to the wave band that will synthesize has higher reflectivity.
7., as claimed in claim 1 or 2 based on the optical fiber laser synthesizer of wavelength-division multiplex, it is characterized in that, described optical-fiber laser is produced by high power ytterbium-doping optical fiber laser, and wave band is between 1000nm to 1200nm.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1773359A (en) * | 2004-11-12 | 2006-05-17 | 中国科学院光电技术研究所 | High-efficiency laser frequency doubling device |
| CN101738618A (en) * | 2009-12-24 | 2010-06-16 | 武汉大学 | Multispectral earth observation laser radar system |
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| EP1771767A4 (en) * | 2004-07-30 | 2009-12-23 | Novalux Inc | Projection display apparatus, system, and method |
| US7329860B2 (en) * | 2005-11-23 | 2008-02-12 | Illumina, Inc. | Confocal imaging methods and apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN1773359A (en) * | 2004-11-12 | 2006-05-17 | 中国科学院光电技术研究所 | High-efficiency laser frequency doubling device |
| CN101738618A (en) * | 2009-12-24 | 2010-06-16 | 武汉大学 | Multispectral earth observation laser radar system |
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