CN202068086U - Realization apparatus of 2.7 micrometer optical fiber laser - Google Patents
Realization apparatus of 2.7 micrometer optical fiber laser Download PDFInfo
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- CN202068086U CN202068086U CN2011201059964U CN201120105996U CN202068086U CN 202068086 U CN202068086 U CN 202068086U CN 2011201059964 U CN2011201059964 U CN 2011201059964U CN 201120105996 U CN201120105996 U CN 201120105996U CN 202068086 U CN202068086 U CN 202068086U
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Abstract
The utility model discloses a realization apparatus of a 2.7 micrometer optical fiber laser, including a first work substance, a second work substance, a first resonant cavity, a second resonant cavity, a first coupling system, a second coupling system and at least one pumping source. Wherein the pumping source is a laser diode or other pumping sources; the first work substance is a thulium-doped substance; the second work substance is a phosphor-doped substance; the pumping light output by the laser diode is coupled into the thulium-doped optical fiber through the first coupling system; stimulated radiation generated by thulium ions is oscillated in the first resonant cavity, and 2 micrometer laser is output; and the 2 micrometer laser is coupled into the phosphor-doped optical fiber through the second coupling system, stimulated Raman scattering light is oscillated in the second resonant cavity, and 2.7 micrometer laser is output. In the utility model, 2.7 micrometer laser can be generated.
Description
Technical field
The utility model relates to optical field, particularly a kind of implement device of 2.7 micron optical fiber lasers.
Background technology
～2.7 mu m waveband lasers belong near infrared light (0.75～3 μ m), have application prospects in fields such as spectroscopy, laser surgery, industry, military affairs, scientific researches.Because hydrone has very strong middle infrared absorption peak near 3.0 μ m, and the ratio of water accounts for 70% greatly in the tissue, thereby tissue to the absorbing state of light and water seemingly.Biological tissue is very strong to the light absorption of 2.7～3 mu m wavebands, makes infrared laser can produce shallow length of penetration, high operation precision in most of soft tissue and sclerous tissues, and is little to the fire damage of adjacent tissue, limits damage field greatly.Mu m waveband laser also can be used as the more efficient pumping source of long wavelength laser simultaneously～2.7.
Fiber laser has advantages such as high conversion efficiency, good beam quality, simple compact cavity configuration, good heat dissipation, thereby the infrared optical fiber laser that utilizes doped fiber to realize, than the infrared laser of other respective wavelength, as solid ion doped crystal or amorphous laser, optical parametric oscillator and difference frequency generator, semiconductor laser and gas laser (CO and CO
2) have a bigger advantage.
In rare-earth-ion-doped silica fiber laser, what emission wavelength was the longest is to mix holmium laser, can reach 2.26 μ m.Because quartz substrate has higher phonon energy, has reduced photon efficient, makes threshold value higher, so utilize rear-earth-doped silica fiber to be difficult to directly realize the laser emission of 2.7 mu m wavebands.The optical fiber of other matrix such as the fluoride fiber of er-doped, light emitting region can reach 2.65-2.85 μ m.
It is external because development optical fiber level is higher, Er:ZBLAN (er-doped fluoride) fiber laser just has report in the latter stage eighties, but in Er:ZBLAN glass, because the bottleneck that the lower level lifetime that participates in laser than upper level lifetime long (being respectively 9ms and 6.9ms), has caused population inversion to distribute.In addition, fluoride fiber is frangible, is difficult for and the silica fiber welding; And rare earth ion doped silica fiber is compared with fluoride fiber, then is easy to draw, produce, and good environmental stability is arranged.Because the gap of optical fiber development aspect, at present domestic also do not have an er-doped fluoride fiber, do not have near the report of the fiber laser 2.7 μ m yet.
The utility model content
The utility model provides a kind of implement device of 2.7 micron optical fiber lasers, can produce 2.7 microns laser.
For solving the problems of the technologies described above, the utility model has adopted following technical scheme:
On the one hand, the utility model discloses a kind of implement device of 2.7 micron optical fiber lasers, comprise first operation material, second operation material, first resonant cavity, second resonant cavity, first coupled system, second coupled system and at least one pumping source; Wherein, described pumping source is laser diode or other pumping source, and described first operation material is for mixing the thulium material, and described second operation material is a phosphorus-doped optical fiber;
The pump light of described laser diode output is coupled into through first coupled system mixes the thulium material, and the stimulated radiation that thulium ion produces is vibrated in first resonant cavity, exports 2 microns laser;
Described 2 microns laser are coupled into phosphorus-doped optical fiber through second coupled system, because the excited Raman effect is exported 2.7 microns laser.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described to mix the thulium material be thulium doped fiber or mix the thulium crystal.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described pump light is the laser of 790 nano wavebands, or the laser of 1210 nano wavebands, or the laser of 1630 nano wavebands.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described first resonant cavity comprises at least one chamber mirror and outgoing mirror; Described chamber mirror is a dichroic mirror, to the pump light high permeability, to 2 microns laser high reflectances; Described outgoing mirror is a dichroic mirror, to the pump light high reflectance, to 2 microns laser than high permeability.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described thulium doped fiber is positioned within first resonant cavity, and the one end is close to border, described chamber, and the other end is the inclined-plane; Thulium doped fiber produces stimulated radiation under the effect of pump light, vibrate in first resonant cavity, from the laser of 2 microns of described outgoing mirror outputs.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, also comprise the acousto-optic modulator and the collimating mirror that are arranged in first resonant cavity, described acousto-optic modulator is used for the loss in modulating resonance chamber, and described collimating mirror is used for the collimation of laser.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described second resonant cavity comprises first grating and second grating; 2 microns laser high permeabilities of described first grating pair are to 2.7 microns laser high reflectances; 2 microns laser high reflectances of described second grating pair, to 2.7 microns laser than high permeability.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described first grating and second grating are inscribed respectively by the two ends of phosphorus-doped optical fiber.
In the implement device of above-mentioned 2.7 micron optical fiber lasers, described phosphorus-doped optical fiber is positioned within second resonant cavity;
Phosphorus-doped optical fiber is caused stimulated Raman scattering light under 2 microns laser action, vibrates in second resonant cavity, from the laser of 2.7 microns of second grating outputs.
Compare with prior art, the beneficial effects of the utility model are:
The implement device of a kind of 2.7 micron optical fiber lasers of the present utility model comprises first operation material, second operation material, first resonant cavity, second resonant cavity, first coupled system, second coupled system and at least one pumping source.Wherein, pumping source is laser diode or other pumping source, and first operation material is for mixing the thulium material, and second operation material is a phosphorus-doped optical fiber; The pump light of laser diode output is coupled into thulium doped fiber through first coupled system, and the stimulated radiation that thulium ion produces is vibrated in first resonant cavity, exports 2 microns laser; 2 microns laser are coupled into phosphorus-doped optical fiber through second coupled system, and caused stimulated Raman scattering light vibrates in second resonant cavity, export 2.7 microns laser.Have excellent characteristic owing to mix the operation material of thulium, phosphorus-doped optical fiber has bigger non-linear Raman frequency shift, and the implement device of the fiber laser that both combine can obtain 2.7 microns laser; Simultaneously simple in structure, dependable performance is stable, efficient is high, and owing to mix the thulium operation material and the phosphorus-doped optical fiber cost is low, makes that the cost of implement device of fiber laser is also lower.
Description of drawings
Fig. 1 has exemplarily described the device index path of 2.7 micron optical fiber lasers of single-ended pumping;
Fig. 2 has exemplarily described the device index path of 2.7 micron optical fiber lasers of both-end pumping.
Embodiment
Contrast accompanying drawing and the utility model is further elaborated below in conjunction with embodiment.
The device of the disclosed 2.7 micron optical fiber lasers of the utility model comprises first operation material, second operation material, first resonant cavity, second resonant cavity, first coupled system, second coupled system and at least one pumping source.Wherein, described pumping source is laser diode or other pumping source, and described first operation material is for mixing the thulium material, and described second operation material is a phosphorus-doped optical fiber.
The pump light that described laser diode produces is coupled into thulium doped fiber through first coupled system, and the stimulated radiation that thulium ion produces is vibrated in first resonant cavity, exports 2 microns laser.
Described 2 microns laser are coupled into phosphorus-doped optical fiber through second coupled system, and caused stimulated Raman scattering light vibrates in second resonant cavity, export 2.7 microns laser.
Embodiment one:
The lasing essential condition of laser is population inversion and the loss of gain serious offense, therefore general laser comprise have the metastable energy level working media, pumping source (also claiming driving source) resonant cavity.Wherein, working media is the substance system that is used for realizing population inversion and produces the stimulated radiation amplification of light, pumping source refers to for making laser working medium realize and keep mechanism or the device that population inversion provides energy source, resonant cavity is used for making the photon in the chamber that consistent frequency, phase place and traffic direction are arranged, thereby make laser have good directivity and coherence, resonant cavity also can shorten the length of working media well, and regulates lasing pattern (being modeling) by changing cavity length.
The device of the 2.7 micron optical fiber lasers of an embodiment of the utility model according to the number of pumping source, can be divided into two kinds of forms of single-ended pumping and both-end pumping.The device of the fiber laser of single-ended pumping as shown in Figure 1; The device of the fiber laser of both-end pumping as shown in Figure 2.
Mixing the thulium material is thulium doped fiber 1, or mixes the thulium crystal, is thulium doped fiber in the present embodiment.Pump light 5 is the laser of 790 nano wavebands, or the laser of 1210 nano wavebands, or the laser of 1630 nano wavebands, also can be the pump light of other suitable wavelength.
First resonant cavity comprises chamber mirror 6 and outgoing mirror 7.
Thulium doped fiber 1 is positioned within first resonant cavity, and the one end is close to described chamber mirror 6, and the other end is the inclined-plane.Thulium doped fiber 1 produces stimulated radiation under the effect of pump light, vibrate in first resonant cavity, from the laser of 2 microns of described outgoing mirror 7 outputs.
One end of thulium doped fiber 1 is the inclined-plane, can suppress the Fresnel reflection of end face, helps improving the quality of output laser.
In the device of present embodiment, also comprise the acousto-optic modulator 8 and the collimating mirror 9 that are arranged in first resonant cavity, described acousto-optic modulator 8 is used for the loss in modulating resonance chamber, and described collimating mirror 9 is used for the collimation of laser.
The result of collimating mirror 9 and acousto-optic modulator 8 collimations and modulation is for the laser pulse after obtaining to modulate.
Second resonant cavity comprises first grating 10 and second grating 11, and 10 pairs of 2 microns laser high permeabilities of described first grating are to 2.7 microns laser high reflectances; 11 pairs of 2 microns laser high reflectances of second grating, to 2.7 microns laser than high permeability.First grating 10 and second grating 11 are inscribed respectively by the two ends of phosphorus-doped optical fiber.
First grating 10 and second grating 11 also can adopt the dichroic mirror of same function to replace.
Phosphorus-doped optical fiber 2 is positioned within second resonant cavity, and phosphorus-doped optical fiber 2 caused stimulated Raman scattering light under 2 microns laser action vibrates in second resonant cavity, from the laser of 2.7 microns of second grating, 11 outputs.
The device of 2.7 micron optical fiber lasers of single-ended pumping as shown in Figure 1 comprises chamber mirror 6, and the pump light that pumping source 5 produces during its work penetrates chamber mirror 6 and enters thulium doped fiber through first coupled system, and thulium ion produces stimulated radiation.
Because 6 pairs of pump light high permeabilities of chamber mirror, to 2 microns laser high reflectances, 7 pairs of pump light high reflectances of outgoing mirror, to 2 microns laser than high permeability, so the stimulated radiation photon can be output mirror 7 partial reflections by chamber mirror 6 reflection, so the oscillating movement and constantly obtain amplifying in thulium doped fiber 1 of stimulated radiation photon, produce more 2 microns photon, and be 2 microns laser from all more consistent wavelength of outgoing mirror 7 outbound courses, phase place and frequency.
When laser vibrates in first resonant cavity, also will be through the collimation of collimating mirror 9, by acousto-optic modulator 8 modulating resonance cavity losses.
Above-mentioned 2 microns laser enters phosphorus-doped optical fiber 2 through second coupled system, and two gratings are directly inscribed at the two ends of phosphorus-doped optical fiber 2 respectively, these two optical grating constitution second resonant cavitys.
10 pairs of 2 microns laser high permeabilities of first grating, to 2.7 microns laser high reflectances, 11 pairs of 2 microns laser high reflectances of second grating, to 2.7 microns laser than high permeability.
The stimulated Raman scattering light that phosphorus-doped optical fiber causes under 2 microns laser action is repeatedly vibration in second resonant cavity, is 2.7 microns laser from second grating, 11 outbound courses, phase place and all more consistent wavelength of frequency.
Embodiment two:
The implement device of 2.7 micron fiber lasers of both-end pumping comprises pumping source 5 as shown in Figure 2, pumping source 51, coupled system 3, coupled system 31, and first resonant cavity, second resonant cavity.
First resonant cavity of the implement device of 2.7 micron fiber lasers of both-end pumping comprises outgoing mirror 7, chamber mirror 6, chamber mirror 61.
As shown in Figure 2, chamber mirror 61 also is a dichroic mirror, when the pump light oblique incidence to the pump light high permeability, to 2 microns laser high reflectances.
The pump light that is produced by pumping source 5 is through coupled system 3, enter thulium doped fiber 1 by chamber mirror 6; The pump light that pumping source 51 produces is through coupled system 31, enter thulium doped fiber by chamber mirror 61.
The stimulated radiation that thulium ion produces by the reflection of chamber mirror 6,61 and the partial reflection of outgoing mirror 7, is vibrated in first resonant cavity in first resonant cavity, is 2 microns laser from all more consistent wavelength of outgoing mirror 7 outbound courses, phase place and frequency; Acousto-optic modulator 8 is used for the modulating resonance cavity loss.
2 microns laser is by phosphorus-doped optical fiber 2, and the stimulated Raman scattering light that causes is at second internal oscillation, and last outbound course, phase place and all more consistent wavelength of frequency are 2.7 microns laser.
Adopt both-end pumping, can improve power output.
Embodiment three:
A kind of implementation method of 2.7 micron optical fiber lasers comprises following steps:
The pump light of pumping source output is coupled into thulium doped fiber (or mixing the thulium crystal) through first coupled system, and the stimulated radiation that thulium ion produces is vibrated in first resonant cavity, exports 2 microns laser;
2 microns laser are coupled into phosphorus-doped optical fiber through second coupled system, and the stimulated Raman scattering light that causes vibrates in second resonant cavity, export 2.7 microns laser.
The implement device of a kind of 2.7 micron optical fiber lasers of the present utility model comprises first operation material, second operation material, first resonant cavity, second resonant cavity, first coupled system, second coupled system and at least one pumping source.Wherein, pumping source is laser diode or other pumping source, and first operation material is for mixing the thulium material, and second operation material is a phosphorus-doped optical fiber; The pump light of laser diode output is coupled into thulium doped fiber through first coupled system, and the stimulated radiation that thulium ion produces is vibrated in first resonant cavity, exports 2 microns laser; 2 microns laser are coupled into phosphorus-doped optical fiber through second coupled system, and the stimulated Raman scattering light that causes vibrates in second resonant cavity, export 2.7 microns laser.Have excellent characteristic owing to mix the operation material of thulium, phosphorus-doped optical fiber has bigger non-linear Raman frequency shift, and the implement device of the fiber laser that both combine can obtain 2.7 microns laser; Simultaneously simple in structure, dependable performance is stable, efficient is high, and owing to mix the thulium operation material and the phosphorus-doped optical fiber cost is low, makes that the cost of implement device of fiber laser is also lower.In addition, the utility model also provides the implement device of 2.7 micron fiber lasers of both-end pumping, can improve power output.
Above content be in conjunction with concrete execution mode to further describing that the utility model is done, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, under the prerequisite that does not break away from the utility model design, can also make some simple deduction or replace, all should be considered as belonging to protection range of the present utility model.
Claims (9)
1. the implement device of a micron optical fiber laser, it is characterized in that, comprise first operation material (1), second operation material (2), first resonant cavity, second resonant cavity, first coupled system (3), second coupled system (4) and at least one pumping source (5); Wherein, described pumping source (5) is laser diode or other pumping source, and described first operation material (1) is for mixing the thulium material, and described second operation material (2) is a phosphorus-doped optical fiber;
The pump light of described laser diode output is coupled into through first coupled system mixes the thulium material, and the stimulated radiation that thulium ion produces is vibrated in first resonant cavity, exports 2 microns laser;
Described 2 microns laser are coupled into phosphorus-doped optical fiber through second coupled system, because the excited Raman effect is exported 2.7 microns laser.
2. the implement device of 2.7 micron optical fiber lasers as claimed in claim 1 is characterized in that, described to mix the thulium material be thulium doped fiber or mix the thulium crystal.
3. the implement device of 2.7 micron optical fiber lasers as claimed in claim 2 is characterized in that, described pump light is the laser of 790 nano wavebands, or the laser of 1210 nano wavebands, or the laser of 1630 nano wavebands.
4. the implement device of 2.7 micron optical fiber lasers as claimed in claim 3 is characterized in that, described first resonant cavity comprises at least one chamber mirror (6) and outgoing mirror (7); Described chamber mirror (6) is a dichroic mirror, to the pump light high permeability, to 2 microns laser high reflectances; Described outgoing mirror (7) is a dichroic mirror, to the pump light high reflectance, to 2 microns laser than high permeability.
5. the implement device of 2.7 micron optical fiber lasers as claimed in claim 4 is characterized in that, described thulium doped fiber is positioned within first resonant cavity, and the one end is close to border, described chamber, and the other end is the inclined-plane; Thulium doped fiber produces stimulated radiation under the effect of pump light, vibrate in first resonant cavity, from the laser of 2 microns of described outgoing mirror outputs.
6. the implement device of 2.7 micron optical fiber lasers as claimed in claim 5, it is characterized in that, also comprise the acousto-optic modulator (8) and the collimating mirror (9) that are arranged in first resonant cavity, described acousto-optic modulator (8) is used for the loss in modulating resonance chamber, and described collimating mirror (9) is used for the collimation of laser.
7. the implement device of 2.7 micron optical fiber lasers as claimed in claim 6 is characterized in that, described second resonant cavity comprises first grating (10) and second grating (11); Described first grating (10) is to 2 microns laser high permeabilities, to 2.7 microns laser high reflectances; Described second grating (11) is to 2 microns laser high reflectances, to 2.7 microns laser than high permeability.
8. the implement device of 2.7 micron optical fiber lasers as claimed in claim 7 is characterized in that, described first grating (10) and second grating (11) are inscribed respectively by the two ends of phosphorus-doped optical fiber.
9. the implement device of 2.7 micron optical fiber lasers as claimed in claim 8 is characterized in that, described phosphorus-doped optical fiber is positioned within second resonant cavity;
Phosphorus-doped optical fiber is caused stimulated Raman scattering light under 2 microns laser action, vibrates in second resonant cavity, from the laser of 2.7 microns of second grating outputs.
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| CN2011201059964U CN202068086U (en) | 2011-04-12 | 2011-04-12 | Realization apparatus of 2.7 micrometer optical fiber laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738697A (en) * | 2011-04-12 | 2012-10-17 | 深圳大学 | Realization method of 2.7 micron fiber laser and apparatus thereof |
| CN108336636A (en) * | 2018-03-02 | 2018-07-27 | 中国科学院合肥物质科学研究院 | A kind of single crystal fiber laser |
| CN109038194A (en) * | 2018-10-11 | 2018-12-18 | 中国人民解放军国防科技大学 | Linear cavity all-fiber laser oscillator with adjustable double-end output power |
| CN113036587A (en) * | 2021-02-07 | 2021-06-25 | 中国科学院合肥物质科学研究院 | Amplified mid-infrared laser based on erbium-doped single crystal fiber seed light source |
-
2011
- 2011-04-12 CN CN2011201059964U patent/CN202068086U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102738697A (en) * | 2011-04-12 | 2012-10-17 | 深圳大学 | Realization method of 2.7 micron fiber laser and apparatus thereof |
| CN102738697B (en) * | 2011-04-12 | 2014-03-12 | 深圳大学 | Realization method of 2.7 micron fiber laser and apparatus thereof |
| CN108336636A (en) * | 2018-03-02 | 2018-07-27 | 中国科学院合肥物质科学研究院 | A kind of single crystal fiber laser |
| CN109038194A (en) * | 2018-10-11 | 2018-12-18 | 中国人民解放军国防科技大学 | Linear cavity all-fiber laser oscillator with adjustable double-end output power |
| CN109038194B (en) * | 2018-10-11 | 2024-03-22 | 中国人民解放军国防科技大学 | Linear cavity all-fiber laser oscillator with adjustable double-end output power |
| CN113036587A (en) * | 2021-02-07 | 2021-06-25 | 中国科学院合肥物质科学研究院 | Amplified mid-infrared laser based on erbium-doped single crystal fiber seed light source |
| CN113036587B (en) * | 2021-02-07 | 2022-07-01 | 中国科学院合肥物质科学研究院 | Amplified mid-infrared laser based on erbium-doped single crystal fiber seed light source |
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