CN101582559A - Mid-infrared cascade Raman fiber lasers - Google Patents
Mid-infrared cascade Raman fiber lasers Download PDFInfo
- Publication number
- CN101582559A CN101582559A CNA2009100597350A CN200910059735A CN101582559A CN 101582559 A CN101582559 A CN 101582559A CN A2009100597350 A CNA2009100597350 A CN A2009100597350A CN 200910059735 A CN200910059735 A CN 200910059735A CN 101582559 A CN101582559 A CN 101582559A
- Authority
- CN
- China
- Prior art keywords
- fiber
- laser
- raman
- zblan
- lasers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The invention discloses a mid-infrared cascade Raman fiber lasers, which is characterized by comprising a doubly coated ZBLAN fluoride fiber that comprises the following components: 53mol. % of ZrF4, 20mol. % of BaF2, 4mol. % of LaF3, 4mol. % of AlF3 and 20mol. % of NaF. One end of the doubly coated ZBLAN fluoride fiber is connected with a high power fiber-doped pump laser, and a cavity resonator of Raman lasers is formed by a plurality of fiber Bragg grating pairs inscribed on two ends of the ZBLAN fiber. By using the stimulated Raman effect of ZBLAN fiber, the Stokes light in all phases generated by Raman frequency shift of pump light form resonance in the fiber Bragg grating pairs to finally realize output of mid-infrared laser. The invention has the advantages of simple and compact structure, high beam quality, high conversation rate, solves the problem that the traditional fiber laser is difficult to generate laser in mid-infrared section, and can be widely used in various fields such as military, medical treatment, environmental monitoring and the like.
Description
Technical field
The invention belongs to the fiber laser field, particularly a kind of in cascaded infrared Raman fiber lasers.
Background technology
Wavelength is that the mid-infrared laser light source of 3～5 μ m is all having important use aspect the military and civilian two, has become the focus of various countries laser work person research.Fiber laser is at aspects such as beam quality, conversion efficiency, the type of cooling, volume weights, all more advanced than traditional gas laser and solid state laser, it is very suitable for the application demand of aspects such as vehicle-mounted, empty machine laser or electro-optical equipment of electronic warfare, laser atmospheric communication equipment, laser medical equipment, and therefore developing 3～5 μ m high power middle infrared optical fiber laser technologies has important scientific meaning and social value.
Optical-fiber laser generally can be by doped fiber as gain media or utilize the nonlinear effect stimulated Raman scattering in the optical fiber to realize.The dopant ion that uses in middle-infrared band is generally Pr, Nd, Tb and Dy, but because it is very low to produce these wave band of laser dopant ion laser levels, and occupy than the long relaxation time, so its output laser power is very fast saturated, add the control of the concentration of doping and uniformity and the low drawing of decreasing doped fiber is all very difficult.Therefore, wavelength is very slow greater than the fiber laser development of 3 μ m, and the maximum wavelength of realizing only is 3.95 μ m at present, and power output rests on the milliwatt magnitude, and slope efficiency also is lower than 10%.
On the other hand, cascade Raman fiber lasers is based on the laser of stimulated Raman scattering (SRS) effect in the optical fiber, it can utilize the short high Raman gain optical fiber of pump light source pumping of existing wavelength, thereby produces the high-order Stokes light wave output with long wavelength.The main gain media of traditional optical-fiber type Raman laser is germanium-doped silica fiber and mixes the phosphorus silica fiber that their Raman frequency shift is respectively 440cm
-1And 1330cm
-1Therefore but for these two kinds of optical fiber, all very high at the wavelength period optical transmission loss greater than 2 μ m, the output laser based on the Raman laser of these two kinds of optical fiber mainly concentrates on 1400～1600nm wave band, also can't realize the output of 3～5 μ m mid-infrared lasers.
Summary of the invention
The above-mentioned technical problem of the present invention for existing in the solution background technology, and provide a kind of ZBLAN of utilization (fluoride) optical fiber to realize the cascade Raman fiber lasers of high power mid-infrared laser output.
Technical solution of the present invention is as follows:
The present invention be a kind of in cascaded infrared Raman fiber lasers, it is characterized in that comprising a double clad ZBLAN optical fiber (its typical component is: 53mol.%ZrF4,20mol.%BaF2,4mol.%LaF3,4mol.%AlF3 and 20mol.%NaF); One end of optical fiber connects a high power and mixes Tm
3+The pumped fiber laser; A plurality of Fiber Bragg Grating FBGs that inscribe at ZBLAN optical fiber two ends are to constituting the resonant cavity of Raman laser.
The described Tm that mixes
3+Optical-fiber laser pumping source output wavelength is about 2 μ m.
The fibre core of described double clad ZBLAN optical fiber and mix Tm
3+If the fibre core of optical-fiber laser pumping source is identical, just directly be welded together, if different, just add the welding again of mould field adapter.
The right reflection kernel wavelength of described Fiber Bragg Grating FBG corresponds respectively to the centre wavelength of each rank raman laser.
The right quantity of described Fiber Bragg Grating FBG obtains Wavelength of Laser adjustment as required.
The present invention mixes Tm with the high power of 2 μ m
3+Optical-fiber laser pumping double clad ZBLAN optical fiber, and utilize cascade Raman effect in the ZBLAN optical fiber to realize the Stokes shift of 2 μ m optical-fiber lasers, each rank stokes light is because the reflex of Fiber Bragg Grating FBG is come back reflective in the chamber, and front and back are to propagating simultaneously in optical fiber, form stable resonance at last, thereby realize the stable output of high power 3～5 μ m optical-fiber lasers.
The present invention has compared a lot of obviously advantages with technology formerly:
1. difficulty in process that infrared low damage doped fiber draws in having avoided and traditional fiber laser are in the difficulty of middle-infrared band generation high efficiency laser, and be simple and compact for structure.
2. can realize the output of high power mid-infrared laser, good beam quality, conversion efficiency height.
3. laser output wavelength can be selected according to adjusting the right quantity of Fiber Bragg Grating FBG.
Description of drawings
Fig. 1 is the structural representation of cascaded infrared Raman laser among the present invention.
Fig. 2 is the Raman frequency shift schematic diagram of ZBLAN optical fiber of the present invention.
Embodiment
Below be that the invention will be further described for example with the accompanying drawing.Fig. 1 be in the structural representation of cascaded infrared Raman laser.Wherein pumping source 1 is that the high power of 2 μ m is mixed Tm
3+Fiber laser, it and double clad ZBLAN optical fiber 2 are welded together, so pump light can directly be coupled into ZBLAN optical fiber.Many Fiber Bragg Grating FBG 3 is scribed at the two ends of ZBLAN optical fiber respectively, its centre wavelength corresponds respectively to the centre wavelength of each rank raman laser.
The Raman frequency shift that studies show that ZBLAN optical fiber is 580cm
-1If adopt the pump light of 2 μ m so, then can calculate the Stokes optical wavelength that the high-order Raman effect produces, as shown in Figure 2.As can be seen, the pump light of 2 μ m only needs three Raman frequency shifts just can reach 3 μ m, four times Raman frequency shift has just reached 3.73 μ m, and five times Raman frequency shift has just reached 4.76 μ m, and therefore this ZBLAN optical fiber has satisfied the Raman frequency shift requirement of 3～5 μ m laser outputs fully.
After the pump light 1 of 2 μ m is coupled into ZBLAN optical fiber 2, if power reaches single order Raman threshold power, just producing wavelength is the single order raman laser of 2.26 μ m, and when single order raman laser power enough reached second order Raman threshold power greatly, just producing wavelength was the second order raman laser of 3.07 μ m.As a same reason, when reaching n rank Raman threshold power, n-1 rank raman laser just produces n rank raman laser, each rank raman laser is because the reflex of fiber grating 3 is come back reflective in the chamber, and each rank raman laser is propagated to simultaneously before and after in optical fiber, form stable resonance at last, thereby realize the stable output of laser.
Claims (5)
1. cascaded infrared Raman fiber lasers in a kind is characterized in that comprising a double clad ZBLAN optical fiber (1) (its typical component is: 53mol.%ZrF4,20mol.%20BaF2,4mol.%LaF3,4mol.%AlF3 and 20mol.%NaF); One end of ZBLAN optical fiber connects a high power and mixes Tm
3+Pumped fiber laser (2); A plurality of Fiber Bragg Grating FBGs that inscribe at ZBLAN optical fiber two ends constitute the resonant cavity of Raman laser to (3).
2. cascaded infrared Raman fiber lasers in according to claim 1 is characterized in that the described Tm of mixing
3+Optical-fiber laser pumping source output wavelength is about 2 μ m.
3. cascaded infrared Raman fiber lasers in according to claim 1 is characterized in that the fibre core of described double clad ZBLAN optical fiber and mixes Tm
3+If the fibre core of optical-fiber laser pumping source is identical, just directly be welded together, if different, just add the welding again of mould field adapter.
4. cascaded infrared Raman fiber lasers in according to claim 1, the right reflection kernel wavelength that it is characterized in that described Fiber Bragg Grating FBG correspond respectively to the centre wavelength of each rank raman laser.
5. cascaded infrared Raman fiber lasers in according to claim 1 is characterized in that the right quantity of described Fiber Bragg Grating FBG obtains Wavelength of Laser adjustment as required.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100597350A CN101582559A (en) | 2009-06-24 | 2009-06-24 | Mid-infrared cascade Raman fiber lasers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100597350A CN101582559A (en) | 2009-06-24 | 2009-06-24 | Mid-infrared cascade Raman fiber lasers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101582559A true CN101582559A (en) | 2009-11-18 |
Family
ID=41364577
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2009100597350A Pending CN101582559A (en) | 2009-06-24 | 2009-06-24 | Mid-infrared cascade Raman fiber lasers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101582559A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306895A (en) * | 2011-08-18 | 2012-01-04 | 厦门大学 | Graphene-based Q-modulation Raman fiber laser |
| CN102709796A (en) * | 2012-06-04 | 2012-10-03 | 电子科技大学 | Intermediate infrared lumen Raman passive Q regulating pulse optical fiber laser |
| CN102709797A (en) * | 2012-06-05 | 2012-10-03 | 电子科技大学 | Intermediate infrared cascaded pulse optical fiber laser |
| CN102706437A (en) * | 2012-06-13 | 2012-10-03 | 扬州森斯光电科技有限公司 | Super-long distance phase-sensitive optical time domain reflectometer (Phi-OTDR) system |
| CN103124044A (en) * | 2013-01-30 | 2013-05-29 | 中国人民解放军国防科学技术大学 | Frequency interval adjustable multi-wavelength anti-Stokes four-wave mixing (FWM) fiber laser |
| CN103151682A (en) * | 2013-01-30 | 2013-06-12 | 中国人民解放军国防科学技术大学 | Anti-Strokes Raman fiber laser achieving multi-wavelength output |
| CN106253041A (en) * | 2016-10-20 | 2016-12-21 | 电子科技大学 | A kind of all-fiber mid-infrared ultra-short pulse laser emitter |
| CN106253046A (en) * | 2016-09-13 | 2016-12-21 | 中国人民解放军国防科学技术大学 | All optical fibre structure mid-infrared gas cascade Ramar laser |
| CN106532419A (en) * | 2016-11-29 | 2017-03-22 | 中国电子科技集团公司第三十四研究所 | Far-end pumped erbium-doped fiber amplifier of fiber Raman laser |
| CN106911059A (en) * | 2017-02-24 | 2017-06-30 | 中国人民解放军国防科学技术大学 | All optical fibre structure 980nm wave band high-power fiber oscillators |
| CN109904716A (en) * | 2019-04-25 | 2019-06-18 | 电子科技大学 | A kind of dual wavelength is the same as ultrashort pulse full optical fiber laser source infrared in repetition |
-
2009
- 2009-06-24 CN CNA2009100597350A patent/CN101582559A/en active Pending
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102306895A (en) * | 2011-08-18 | 2012-01-04 | 厦门大学 | Graphene-based Q-modulation Raman fiber laser |
| CN102709796A (en) * | 2012-06-04 | 2012-10-03 | 电子科技大学 | Intermediate infrared lumen Raman passive Q regulating pulse optical fiber laser |
| CN102709797B (en) * | 2012-06-05 | 2014-04-09 | 电子科技大学 | Intermediate infrared cascaded pulse optical fiber laser |
| CN102709797A (en) * | 2012-06-05 | 2012-10-03 | 电子科技大学 | Intermediate infrared cascaded pulse optical fiber laser |
| CN102706437A (en) * | 2012-06-13 | 2012-10-03 | 扬州森斯光电科技有限公司 | Super-long distance phase-sensitive optical time domain reflectometer (Phi-OTDR) system |
| CN103151682A (en) * | 2013-01-30 | 2013-06-12 | 中国人民解放军国防科学技术大学 | Anti-Strokes Raman fiber laser achieving multi-wavelength output |
| CN103124044A (en) * | 2013-01-30 | 2013-05-29 | 中国人民解放军国防科学技术大学 | Frequency interval adjustable multi-wavelength anti-Stokes four-wave mixing (FWM) fiber laser |
| CN103124044B (en) * | 2013-01-30 | 2015-04-08 | 中国人民解放军国防科学技术大学 | Frequency interval adjustable multi-wavelength anti-Stokes four-wave mixing (FWM) fiber laser |
| CN106253046A (en) * | 2016-09-13 | 2016-12-21 | 中国人民解放军国防科学技术大学 | All optical fibre structure mid-infrared gas cascade Ramar laser |
| CN106253046B (en) * | 2016-09-13 | 2017-11-03 | 中国人民解放军国防科学技术大学 | Infrared-gas cascades Ramar laser in all optical fibre structure |
| CN106253041A (en) * | 2016-10-20 | 2016-12-21 | 电子科技大学 | A kind of all-fiber mid-infrared ultra-short pulse laser emitter |
| CN106532419A (en) * | 2016-11-29 | 2017-03-22 | 中国电子科技集团公司第三十四研究所 | Far-end pumped erbium-doped fiber amplifier of fiber Raman laser |
| CN106911059A (en) * | 2017-02-24 | 2017-06-30 | 中国人民解放军国防科学技术大学 | All optical fibre structure 980nm wave band high-power fiber oscillators |
| CN109904716A (en) * | 2019-04-25 | 2019-06-18 | 电子科技大学 | A kind of dual wavelength is the same as ultrashort pulse full optical fiber laser source infrared in repetition |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101582559A (en) | Mid-infrared cascade Raman fiber lasers | |
| Huang et al. | High-order mode Yb-doped fiber lasers based on mode-selective couplers | |
| Canning | Fibre lasers and related technologies | |
| US5818630A (en) | Single-mode amplifiers and compressors based on multi-mode fibers | |
| Peng et al. | 1.94 μm switchable dual-wavelength Tm 3+ fiber laser employing high-birefringence fiber Bragg grating | |
| CN102761048B (en) | Tunable Raman fiber laser | |
| Lee et al. | Heavily Tm 3+-doped silicate fiber with high gain per unit length | |
| CN104934843A (en) | All-fiber intermediate infrared high-energy passively Q-switched fiber laser | |
| Zou et al. | 3.6 W compact all-fiber Pr3+-doped green laser at 521 nm | |
| CN103531994A (en) | Same-bandwidth pumping single-frequency optical fiber laser using erbium-doped quartz optical fiber as gain medium | |
| CN104134927A (en) | Nonlinear effect Q-switched fiber laser | |
| Liu et al. | High-power operation of silica-based Raman fiber amplifier at 2147 nm | |
| CN202995205U (en) | Multicore photonic crystal fiber based supercontinuum source | |
| Qian et al. | Tm: YAG ceramic derived multimaterial fiber with high gain per unit length for 2 µm laser applications | |
| Du et al. | Spatial mode switchable fiber laser based on FM-FBG and random distributed feedback | |
| Lv et al. | Few-mode random fiber laser with a switchable oscillating spatial mode | |
| Kotov et al. | Yb-free Er-doped all-fiber amplifier cladding-pumped at 976 nm with output power in excess of 100 W | |
| Lord et al. | Erbium-doped aluminophosphosilicate all-fiber laser operating at 1584 nm | |
| Song et al. | Phosphosilicate fiber–based dual-wavelength random fiber laser with flexible power proportion and high spectral purity | |
| Zhang et al. | 1.7-μm Tm-doped fiber laser intracavity-pumped by an erbium/ytterbium-codoped fiber laser | |
| CN101976795A (en) | Gadolinium-doped ultraviolet up-conversion fluoride optical fiber and optical fiber laser device | |
| Qiu et al. | High power-efficiency, low DMG cladding-pumped few-mode Er/Yb/P co-doped fiber amplifier for mode division multiplexing | |
| Balaswamy et al. | All passive architecture for high efficiency cascaded Raman conversion | |
| Furusawa et al. | High gain efficiency amplifier based on an erbium doped aluminosilicate holey fiber | |
| Li et al. | More than 6 kW near single-mode fiber amplifier based on a bidirectional tandem pumping scheme |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20091118 |