CN204835192U - Fiber laser system is enlargied in separation - Google Patents
Fiber laser system is enlargied in separation Download PDFInfo
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- CN204835192U CN204835192U CN201520180480.4U CN201520180480U CN204835192U CN 204835192 U CN204835192 U CN 204835192U CN 201520180480 U CN201520180480 U CN 201520180480U CN 204835192 U CN204835192 U CN 204835192U
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- fiber
- output
- laser
- separation
- maser system
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Abstract
The utility model discloses a fiber laser system is enlargied in separation, include: the signal source, isolator, the optical fiber cable that arrange in proper order along the light path reach enlarged output subassembly, wherein, it includes that the integrated amplifies module and fiber output head module to amplify the output subassembly. The utility model discloses a compact enlarged output subassembly that sets up, nonlinear effect's production has been avoided to the signal direct output, guarantees the high peak power of laser instrument, high average power's safety and stability output.
Description
Technical field
The utility model relates to field of laser device technology, particularly relates to a kind of separation amplifying fiber Optical Maser System.
Background technology
High-peak power laser to be carved and the field such as welding has important, irreplaceable application deeply at laser marking, laser.General laser needs tape splicing to have the fiber output head of isolator just can be applied in industrial processes easily and flexibly, but high-peak power laser exports pulse due to its higher peak power, longer optical fiber cable part easily and in fiber output head produces serious nonlinear effect, as Raman effect.The stability of these nonlinear effects on product causes many-sided bad impact, first limits the maximum exportable power of fiber laser; Secondly, because its output wavelength scope broadens, cause it when application such as laser markings because the sensitiveness of lens to wavelength causes the problem of focusing, thus affect effect; Again, laser when laser processing inevitably antireflection part light go back, if there is Raman spectrum to exist in fiber output head, can return to along with output Transmission Fibers, but laser is inner due to price and manufacturing process restriction, general bandwidth is narrower, be only limited to isolation signals wave band, and transparent to Raman spectrum wave band, thus cause laser seed source to damage or damage, thus reduce the stability of product.
As shown in Figure 1, the signal source 1 ' of existing fiber laser connects isolator 2 ', and from isolator 2 ' signal access amplification module 3 ' out, signal is exaggerated to transmit through optical cable 4 ' after module 3 ' is amplified and is exported as directional light by fiber output head 5 '.
As shown in Figure 2, wherein curve laser112 ' is signal source signal out curve of spectrum out after amplification module amplifies, the now output average power >20W of laser112 ', peak power is 20KW, curve of spectrum when repetition rate is 25Khz, pulse duration is 200ns.As can be seen from the figure now almost do not produce as stimulated Raman scattering (StimulatedRamanScattering, SRS), stimulated Brillouin scattering (StimulatedBrillouinScattering, the nonlinear effect such as SBS), peak power after now amplifying can higher than 25KW, but high peak power laser pulse is easy and the nonlinear effects such as SRS, SBS occur optical fiber, and along with the length of optical fiber longer, this effect is more serious.Nonlinear effect easily causes damage even to damage to optical fiber and signal source, has a strong impact on the performance of laser.But fiber laser is especially in the application such as mark, detection, needs optical cable longer, generally at more than 2m, just handled easily and application.Usually, be the ordinary optic fibre of 15 μm for fibre core, if when the peak power of laser pulse exceeds 5KW, 1m can produce the spectrum of the Raman part of about 5DB.
The wherein curve of spectrum of laser213 ', for above-mentioned laser pulse exports test spectral by fiber output head after 3m optical cable transmission, now the output average power of laser213 ' is 20W, and peak power is 20KW.Contrast laser112 ' curve obviously can be found out, the laser pulse with high peak power creates SRS in optical cable transmission, containing flashlight and Raman spectrum in the spectrum of therefore laser213 '.But Laser output pulse is when carrying out laser application, some light pulse is back in light path, isolator generally can only block signal light, and the non-signal light source caused other nonlinear effects such as Ramans is transparent, so this part nonlinear effect spectrum again through optical cable in amplification module or signal source, very easily cause the damage of amplification module and signal source.In order to reduce nonlinear effect, damage or damage being caused to laser, needing the operating distance reducing high-peak power laser pulse and optical cable.
In summary, existing high-peak power laser, in safety and stability, obvious existing defects, needs to be improved.
Utility model content
The technical problems to be solved in the utility model is to overcome prior art defect, provides a kind of and is separated amplifying fiber Optical Maser System.
The technical solution of the utility model comprises a kind of separation amplifying fiber Optical Maser System, comprise: signal source, isolator, optical fiber cable and the amplification output precision arranged successively along light path, wherein, described amplification output precision comprises integrated amplification module and fiber output head module.
Preferably, described amplification module is connected by short fiber with fiber output head module.
Preferably, described short fiber length is 0 ~ 50cm.
Preferably, described fiber output head module comprises cladding mode cancellation element, isolator, the beam expanding lens arranged successively along light path.
Preferably, the average-power-range of described signal source is 0 ~ 5W.
Preferably, the length of described optical fiber cable is 0.1 ~ 10m.
The beneficial effects of the utility model comprise: the amplification output precision adopting above-mentioned compact setting, and signal directly exports, and avoids the generation of nonlinear effect, ensure that the safety and stability of the high-peak power of laser, high-average power exports.
Accompanying drawing explanation
Fig. 1 is the structural representation of fiber laser of the prior art.
Fig. 2 is the spectrogram before and after optical cable exports of fiber laser of the prior art.
Fig. 3 is the structural representation of fiber ring laser system of the present utility model.
Fig. 4 is the amplification output precision structural representation of fiber ring laser system of the present utility model.
Fig. 5 is the fiber output head modular structure schematic diagram of fiber ring laser system of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
A kind of separation amplifying fiber Optical Maser System, comprising: signal source, isolator, optical fiber cable and the amplification output precision arranged successively along light path, wherein, described amplification output precision comprises integrated amplification module and fiber output head module.
Technical solutions of the utility model adopt the amplification output precision of compact setting, and signal directly exports, and avoid the generation of nonlinear effect, ensure that the safety and stability of the high-peak power of laser, high-average power exports.
As shown in Figure 3, a kind of separation amplifying fiber Optical Maser System 10, comprise: signal source 11, isolator 12, optical fiber cable 13 and the amplification output precision 15 arranged successively along light path, wherein, above-mentioned amplification output precision 15 comprises integrated amplification module 16 and fiber output head module 17.
Amplification module 16 input connecting fiber optical cable 13, amplification module 16 output connecting fiber delivery module 17.
As shown in Figure 4, amplification module 16 is connected compact with fiber output head module 17, forms an entirety, is easy to movable, handled easily.Further, amplification module 16 is connected by short fiber 18 with fiber output head module 17.
Above-mentioned short fiber 18 length is preferably 0 ~ 50cm, only directly need export through shorter optical fiber 18 through amplification module 16 amplifying signal thus, avoid the generation of nonlinear effect, ensure that the safety and stability of the high-peak power of laser, high-average power exports.
As shown in Figure 5, above-mentioned fiber output head module 17 comprises cladding mode cancellation element 19, isolator 20, the beam expanding lens 21 arranged successively along light path.Wherein, cladding mode cancellation element 19 is mainly used in removing residual pump light; Isolator 20 is high power isolator, prevents laser from causing damage to laser being applied to the flashlight returned to; Hot spot mainly expands and parallel output by beam expanding lens 21, the remote application of convenient realization.
The average-power-range of signal source 11 is 0 ~ 5W, and after isolator 12, the peak power of laser pulse 14 is still lower than 5KW, and peak power laser pulse low like this reaches through optical fiber cable 13 and is placed in output module 15.
The length of optical fiber cable 13 is 0.1 ~ 10m, even if the length of optical fiber cable 13 is longer, but because the peak power of laser pulse 14 is low, be not enough to produce as nonlinear effects such as SRS, when the laser pulse therefore after optical fiber cable 13 and output, laser pulse 14 is almost identical.
Separation amplifying fiber Optical Maser System of the present utility model, safety and stability: reduce high-peak power, the laser pulse of high-average power and the operating distance of optical fiber cable, thus reduce the generation of nonlinear effect, ensure that the safety and stability of the high-peak power of laser, high-average power exports; Reduce costs: the use that this approach reduces other isolator, grating, reduce cost.
The above embodiment of the present utility model, does not form the restriction to the utility model protection range.Any various other made according to technical conceive of the present utility model change and distortion accordingly, all should be included in the protection range of the utility model claim.
Claims (6)
1. be separated an amplifying fiber Optical Maser System, it is characterized in that, comprising: signal source, isolator, optical fiber cable and the amplification output precision arranged successively along light path, wherein, described amplification output precision comprises integrated amplification module and fiber output head module.
2. separation amplifying fiber Optical Maser System as claimed in claim 1, it is characterized in that, described amplification module is connected by short fiber with fiber output head module.
3. separation amplifying fiber Optical Maser System as claimed in claim 2, it is characterized in that, described short fiber length is 0 ~ 50cm.
4. separation amplifying fiber Optical Maser System as claimed in claim 2, it is characterized in that, described fiber output head module comprises cladding mode cancellation element, isolator, the beam expanding lens arranged successively along light path.
5. separation amplifying fiber Optical Maser System as claimed in claim 1, it is characterized in that, the average-power-range of described signal source is 0 ~ 5W.
6. separation amplifying fiber Optical Maser System as claimed in claim 1, it is characterized in that, the length of described optical fiber cable is 0.5 ~ 10m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180480.4U CN204835192U (en) | 2015-03-27 | 2015-03-27 | Fiber laser system is enlargied in separation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520180480.4U CN204835192U (en) | 2015-03-27 | 2015-03-27 | Fiber laser system is enlargied in separation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204835192U true CN204835192U (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520180480.4U Expired - Fee Related CN204835192U (en) | 2015-03-27 | 2015-03-27 | Fiber laser system is enlargied in separation |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159649A (en) * | 2015-03-27 | 2016-11-23 | 深圳激扬光电有限公司 | A kind of separation amplifying fiber Optical Maser System |
| CN112652939A (en) * | 2020-12-22 | 2021-04-13 | 武汉菩济医疗科技有限公司 | Optical cable type ultrafast optical fiber laser |
| CN114018900A (en) * | 2021-11-15 | 2022-02-08 | 中国工程物理研究院材料研究所 | Raman spectrometer |
-
2015
- 2015-03-27 CN CN201520180480.4U patent/CN204835192U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106159649A (en) * | 2015-03-27 | 2016-11-23 | 深圳激扬光电有限公司 | A kind of separation amplifying fiber Optical Maser System |
| CN112652939A (en) * | 2020-12-22 | 2021-04-13 | 武汉菩济医疗科技有限公司 | Optical cable type ultrafast optical fiber laser |
| CN114018900A (en) * | 2021-11-15 | 2022-02-08 | 中国工程物理研究院材料研究所 | Raman spectrometer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151202 Termination date: 20180327 |