CN218958253U - High-power high-brightness 1600nm optical fiber laser - Google Patents
High-power high-brightness 1600nm optical fiber laser Download PDFInfo
- Publication number
- CN218958253U CN218958253U CN202223417517.XU CN202223417517U CN218958253U CN 218958253 U CN218958253 U CN 218958253U CN 202223417517 U CN202223417517 U CN 202223417517U CN 218958253 U CN218958253 U CN 218958253U
- Authority
- CN
- China
- Prior art keywords
- reflection grating
- fiber
- laser
- gain
- pump
- 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.)
- Active
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/10—Information and communication technologies [ICT] supporting adaptation to climate change, e.g. for weather forecasting or climate simulation
Landscapes
- Lasers (AREA)
Abstract
The utility model relates to the technical field of fiber lasers, in particular to a high-power high-brightness 1600nm fiber laser, which comprises a forward pumping module, a forward pumping module and a forward pumping module, wherein the forward pumping module is used for generating pumping laser; the gain unit is matched with the forward pumping module to convert the pumping laser into signal light; wherein the pump laser is 1045nm, and the signal light is 1600nm; through the arrangement of the forward pumping module and the gain unit, 1045nm pump laser generated by the forward pumping module can be well absorbed by the gain unit and trigger a gain mechanism, and finally, 1045nm pump laser is converted into 1600nm signal light for output.
Description
Technical Field
The utility model relates to the technical field of fiber lasers, in particular to a high-power high-brightness 1600nm fiber laser.
Background
The laser light source with high power and high brightness near 1600nm plays an important role in national defense, military and scientific research.
The Raman fiber laser can realize 1600nm laser output, however, the wave band needs a multistage Raman process, the whole laser conversion efficiency is low, and the problems of spectrum broadening, insufficient spectrum purity and the like exist; the high-power erbium-doped fiber laser can be realized by using the multimode diode cladding pumping, however, the cladding pumping has the problems of low efficiency, large quantum loss and the like, the excessive pumping laser can cause darkening of light quality, and the 1600nm is far away from the emission peak value of the erbium-doped fiber, so that the gain is low and the stronger spontaneous radiation is easy to realize.
In view of this, a high power high brightness 1600nm fiber laser is proposed to achieve high power high beam quality 1600nm laser output.
Disclosure of Invention
Aiming at the problems in the prior art, the utility model provides a high-power high-brightness 1600nm optical fiber laser.
In order to solve the technical problems, the utility model is solved by the following technical scheme:
a high power high brightness 1600nm fiber laser, comprising,
the forward pumping module is used for generating pumping laser;
the gain unit is matched with the forward pumping module to convert the pumping laser into signal light for output;
wherein the pump laser is 1045nm, and the signal light is 1600nm.
Preferably, the gain unit comprises a first reflection grating, a second reflection grating and a first gain fiber,
one end of the first reflection grating is matched with the forward pumping module, and the other end of the first reflection grating is matched with the first gain fiber;
the other end of the first gain fiber is matched with one end of the second reflection grating.
Preferably, the device further comprises a reverse pumping module, wherein the reverse pumping module comprises a first pumping source and a first pumping combiner; one end of the first pump beam combiner is matched with the second reflection grating, and the other end of the first pump beam combiner is matched with the first pump beam combiner.
Preferably, the first reflection grating is a 1600+/-1 nm high reflection grating; the second reflection grating is a 1600+/-1 nm low reflection grating.
Preferably, the first gain fiber is an erbium-ytterbium co-doped fiber.
Preferably, the forward pumping module comprises a third reflection grating, a second gain fiber, a fourth reflection grating, a second pump beam combiner and a second pump source,
one end of the second pump beam combiner is matched with the second pump source, and the other end of the second pump beam combiner is matched with one end of the fourth reflection grating;
the other end of the fourth reflection grating is matched with one end of the second gain optical fiber;
the other end of the second gain optical fiber is matched with one end of the third reflection grating;
the other end of the third reflection grating is matched with the other end of the first reflection grating.
Preferably, the fourth reflection grating is 1045+ -1 nm high reflection grating, and the third reflection grating is 1045+ -1 nm low reflection grating.
Preferably, the second gain fiber is an ytterbium-doped gain fiber.
The utility model has at least the following beneficial effects:
1. through the arrangement of the forward pumping module and the gain unit, 1045nm pumping laser generated by the forward pumping module can be better absorbed by a first gain optical fiber in the gain unit and trigger a gain mechanism, and finally, 1045nm pumping laser is converted into 1600nm signal light for output.
2. The forward pumping module in the application generates high-power 1045nm forward pumping laser, the 1045nm forward pumping laser and the residual semiconductor multimode pumping laser are simultaneously injected into the gain unit, so that fiber core cladding mixed pumping can be realized, the laser conversion efficiency is greatly improved, laser thermal management is facilitated, meanwhile, the backward pumping module can simultaneously realize cladding pumping, and the output of high-power 1600nm laser is realized in a forward and backward mixed pumping mode through fiber core cladding.
Drawings
FIG. 1 is a schematic diagram of a fiber laser of the present application;
FIG. 2 is a spectrum of 1600nm laser light in the present application.
The names of the parts indicated by the numerical references in the drawings are as follows:
100. a forward pumping module; 110. a second pump source; 120. a second pump combiner; 130. a fourth reflection grating; 140. a second gain fiber; 150. a third reflective grating; 200. a gain unit; 210. a first reflection grating; 220. a first gain fiber; 230. a second reflection grating; 300. a reverse pumping module; 310. a first pump combiner; 320. a first pump source.
Detailed Description
For a further understanding of the present utility model, the present utility model will be described in detail with reference to the drawings and examples. It is to be understood that the examples are illustrative of the present utility model and are not intended to be limiting.
As shown in fig. 1, the present embodiment provides a high power high brightness 1600nm fiber laser, which includes,
a forward pumping module 100 for generating pumping laser light;
a gain unit 200, which is matched with the forward pumping module 100 to convert the pumping laser into signal light for output;
wherein the pump laser is 1045nm, and the signal light is 1600nm.
In this embodiment, when the 1045nm pump laser generated by the forward pump module 100 is output to the gain unit 200, the 1045nm pump laser can be preferably converted into 1600nm signal light with high power under the action of the gain unit 200.
In this embodiment, the gain unit 200 includes a first reflection grating 210, a second reflection grating 230 and a first gain fiber 220,
one end of the first reflection grating 210 is matched with the forward pumping module 100, and the other end is matched with the first gain optical fiber 220;
the other end of the first gain fiber 220 is coupled to one end of the second reflection grating 230.
By the arrangement of the forward pumping module 100 and the gain unit 200 in this embodiment, the 1045nm pump laser generated by the forward pumping module 100 can be absorbed by the first gain fiber 220 in the gain unit 200 and trigger a gain mechanism, and the feedback mechanisms of the first reflection grating 210 and the second reflection grating 230 are matched, so as to finally realize the conversion of the 1045nm pump laser into 1600nm signal light for output.
In this embodiment, the pump system further includes a reverse pump module 300, where the reverse pump module 300 includes a first pump source 320 and a first pump combiner 310; one end of the first pump combiner 310 is matched with the second reflection grating 230, and the other end is matched with the first pump combiner 310.
By the configuration in this embodiment, the first pump source 320 generates the reverse pump laser, and the first pump combiner 310 is coupled into the first gain fiber 220 to induce a gain mechanism, so that the power of the output 1600nm signal light can be further enhanced by matching the feedback mechanisms of the first reflection grating 210 and the second reflection grating 230.
In this embodiment, the first reflection grating 210 is a high reflection grating of 1600±1nm; the second reflection grating 230 is a 1600+ -1 nm low reflection grating.
In this embodiment, the reflectivity of the first reflection grating 210 is greater than 95%; the second reflection grating 230 has a lower reflectivity than the first reflection grating 210.
By the configuration in the present embodiment, the feedback mechanism of the first reflection grating 210 and the second reflection grating 230 can be preferably realized, so that the first reflection grating 210 and the second reflection grating 230 realize reflection of 1600nm signal light; it is known that the first reflection grating 210 can preferably reflect almost all of 1600nm signal light, so that 1600nm signal light can be output through the second reflection grating 230 having a low reflectance.
In this embodiment, the first gain fiber 220 is an erbium ytterbium co-doped fiber.
By the configuration in this embodiment, the first gain fiber 220 is able to absorb the 1045nm pump laser light preferably, thereby inducing a gain mechanism.
In this embodiment, the forward pump module 100 includes a third reflection grating 150, a second gain fiber 140, a fourth reflection grating 130, a second pump combiner 120 and a second pump source 110,
one end of the second pump beam combiner 120 is matched with the second pump source 110, and the other end is matched with one end of the fourth reflection grating 130;
the other end of the fourth reflection grating 130 is matched with one end of the second gain fiber 140;
the other end of the second gain fiber 140 is matched with one end of the third reflection grating 150;
the other end of the third reflection grating 150 is matched with the other end of the first reflection grating 210.
In this embodiment, the second pump source 110 is a semiconductor multimode pump laser, and its wavelength may be 915nm, 940nm or 976nm;
by the configuration in this embodiment, the second pump source 110 generates forward pump laser, and is coupled into the second gain fiber 140 under the action of the second pump beam combiner 120, so that the forward pump laser is absorbed by the second gain fiber 140 and triggers a gain mechanism, and the forward pump laser is output to the gain unit 200 by matching with feedback mechanisms of the third reflection grating 150 and the fourth reflection grating 130.
In this embodiment, the fourth reflective grating 130 is a 1045±1nm high reflective grating, and the third reflective grating 150 is a 1045±1nm low reflective grating.
In this embodiment, the reflectivity of the fourth reflection grating 130 is greater than 95%, and the reflectivity of the third reflection grating 150 is lower than the fourth reflection grating 130; the center wavelength of the fourth reflection grating 130 is preferably 1045±1nm; the reflection bandwidth of the third reflection grating 150 is narrower than that of the fourth reflection grating 130.
By the configuration in the present embodiment, reflection of 1045nm pump laser light by the third reflection grating 150 and the fourth reflection grating 130 can be preferably achieved, and it can be appreciated that the fourth reflection grating 130 can preferably reflect almost all 1045nm pump laser light, and then cause 1045nm pump laser light to be output to the gain unit 200 through the third reflection grating 150.
In this embodiment, the second gain fiber 140 is an ytterbium-doped gain fiber.
By the configuration in this embodiment, the second gain fiber 140 can absorb the forward pump laser generated by the second pump source 110, and then trigger the gain mechanism.
The high-power high-brightness 1600nm fiber laser in the embodiment is composed of a forward pumping module 100, a gain unit 200 and a backward pumping module 300, wherein the backward pumping module 300 is a 1600nm resonant cavity module, and the forward pumping module 100 is a 1045nm pumping laser module;
in this embodiment, the forward pumping module 100 generates high-power 1045nm forward pumping laser, the 1045nm forward pumping laser and the rest semiconductor multimode pumping laser are simultaneously injected into the gain unit 200, so as to realize core cladding mixed pumping, greatly improve laser conversion efficiency, and facilitate laser thermal management, and meanwhile, the backward pumping module 300 can simultaneously realize cladding pumping, and realize output of high-power 1600nm laser in a mode of core cladding and forward and backward mixed pumping. It should be noted that the first pump combiner 310 is capable of preferably backward-pumping the backward-pumped laser light generated by the first pump source 320 into the first gain fiber 220.
Further specifically, the forward pumping module 100 in this embodiment: the second pump source 110 is a 976nm pump laser, and the output optical fiber is a multimode optical fiber; the signal fiber of the second pump beam combiner 120 is a single mode fiber, and the pump fiber is a multimode fiber; the fourth reflection grating 130 is 1045+ -1 nm high reflection grating, the reflectivity is 95-99.9%, the bandwidth is 1-3nm, and the optical fiber type is single mode optical fiber; the third reflection grating 150 is a 1045+/-1 nm low reflection grating, the central wavelength is aligned with the fourth reflection grating 130, the reflectivity is 10% -20%, the bandwidth is 0.1-0.5nm, and the optical fiber type is single-mode optical fiber; ytterbium-doped gain optical fiber, the optical fiber type is single-mode optical fiber; the forward pumping module 100 in this embodiment can output laser light exceeding 100W1045nm, the center wavelength depends on the third reflection grating 150, and besides the signal laser light, there is residual pumping laser light with considerable power;
gain unit 200: the first reflection grating 210 is a high reflection grating with 1600+/-1 nm, the reflectivity is 95-99.9%, and the bandwidth is 1-3nm; erbium-ytterbium co-doped optical fiber, wherein the type of the optical fiber is single-mode optical fiber; the second reflection grating 230 is a low reflection grating with 1600+/-1 nm, the reflectivity is 15-25%, and the bandwidth is 0.1-0.5nm;
reverse pumping module 300: the pumping mode of the first pump beam combiner 310 is reverse pumping, and the reverse pumping laser is coupled into the erbium ytterbium co-doped fiber; the first pump source 320 is a 976nm multimode semiconductor laser;
as shown in the spectrum of fig. 2, the abscissa in fig. 2 represents the wavelength of the laser light, and the ordinate represents the relative intensity of the laser light; when the forward pumping module 100 and the backward pumping module 300 are simultaneously turned on, 1600nm laser light having a power exceeding 100W may be output.
In summary, the foregoing description is only of the preferred embodiments of the present utility model, and all equivalent changes and modifications made in accordance with the claims should be construed to fall within the scope of the utility model.
Claims (8)
1. A high-power high-brightness 1600nm optical fiber laser is characterized in that: comprising the steps of (a) a step of,
a forward pumping module (100) for generating pump laser light;
a gain unit (200) cooperating with the forward pumping module (100) to effect conversion of the pump laser light into a signal light output;
wherein the pump laser is 1045nm, and the signal light is 1600nm.
2. The high power high brightness 1600nm fiber laser of claim 1, wherein: the gain unit (200) comprises a first reflection grating (210), a second reflection grating (230) and a first gain fiber (220),
one end of the first reflection grating (210) is matched with the forward pumping module (100), and the other end of the first reflection grating is matched with the first gain optical fiber (220);
the other end of the first gain fiber (220) is mated with one end of the second reflection grating (230).
3. A high power high brightness 1600nm fiber laser according to claim 2, wherein: also included is a counter-pumping module (300), the counter-pumping module (300) comprising a first pump source (320) and a first pump combiner (310); one end of the first pump beam combiner (310) is matched with the second reflection grating (230), and the other end of the first pump beam combiner (310) is matched with the first pump beam combiner.
4. A high power high brightness 1600nm fiber laser according to claim 2 or 3, wherein: the first reflection grating (210) is a 1600+/-1 nm high reflection grating; the second reflection grating (230) is a 1600+/-1 nm low reflection grating.
5. A high power high brightness 1600nm fiber laser according to claim 2 or 3, wherein: the first gain fiber (220) is an erbium-ytterbium co-doped fiber.
6. The high power high brightness 1600nm fiber laser of claim 5, wherein: the forward pumping module (100) comprises a third reflection grating (150), a second gain fiber (140), a fourth reflection grating (130), a second pump beam combiner (120) and a second pump source (110),
one end of the second pump beam combiner (120) is matched with the second pump source (110), and the other end of the second pump beam combiner is matched with one end of the fourth reflection grating (130);
the other end of the fourth reflection grating (130) is matched with one end of the second gain optical fiber (140);
the other end of the second gain optical fiber (140) is matched with one end of the third reflection grating (150);
the other end of the third reflection grating (150) is matched with the other end of the first reflection grating (210).
7. The high power high brightness 1600nm fiber laser of claim 6, wherein: the fourth reflection grating (130) is 1045+/-1 nm high reflection grating, and the third reflection grating (150) is 1045+/-1 nm low reflection grating.
8. The high power high brightness 1600nm fiber laser of claim 6, wherein: the second gain fiber (140) is an ytterbium-doped gain fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223417517.XU CN218958253U (en) | 2022-12-20 | 2022-12-20 | High-power high-brightness 1600nm optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223417517.XU CN218958253U (en) | 2022-12-20 | 2022-12-20 | High-power high-brightness 1600nm optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218958253U true CN218958253U (en) | 2023-05-02 |
Family
ID=86105011
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223417517.XU Active CN218958253U (en) | 2022-12-20 | 2022-12-20 | High-power high-brightness 1600nm optical fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218958253U (en) |
-
2022
- 2022-12-20 CN CN202223417517.XU patent/CN218958253U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107623246B (en) | Fiber core co-band pumping fiber laser | |
| CN102931572B (en) | High-power fiber lasers of short wavelength interval pump | |
| CN113675720A (en) | High-efficiency single-frequency thulium-doped fiber laser based on in-band pumping | |
| CN112886375B (en) | Short-wavelength Tm-doped fiber laser with wave band of 1.6-1.7 mu m | |
| CN114336244A (en) | Optical fiber laser | |
| CN113964632A (en) | High-power single-mode fiber laser | |
| CN106711747B (en) | Composite cavity structure optical fiber oscillator based on same-band pumping technology | |
| CN218958253U (en) | High-power high-brightness 1600nm optical fiber laser | |
| US5157683A (en) | Laser systems | |
| US6240108B1 (en) | Cladding pumped fiber laser with reduced overlap between a laser mode and an ion-doped region | |
| CN202059039U (en) | Double cladding photonic crystal fiber laser of 980nm | |
| CN216251600U (en) | Oscillation amplification integrated optical fiber laser | |
| Bartolacci et al. | All-fiber Yb-doped CW and pulsed laser sources operating near 980nm | |
| Minelly et al. | Laser-diode-pumped neodymium-doped fiber laser with output power> 1W | |
| Kim et al. | Ho-doped silica fibre laser in-band pumped by a Tm-doped fibre laser | |
| Minelly et al. | High power diode pumped single-transverse-mode Yb fiber laser operating at 978 nm | |
| CN115764525A (en) | High-power high-brightness 1600nm optical fiber laser | |
| CN212485782U (en) | 2-micrometer random fiber laser based on random phase shift fiber grating | |
| CN112769029A (en) | DBR short-cavity single-frequency fiber laser of multimode semiconductor pump source cladding pumping | |
| CN111817122A (en) | Multi-pumping all-fiber laser based on cascade pumping structure | |
| Loh et al. | Efficient distributed feedback erbium-doped germanosilicate fibre laser pumped in the 520 nm band | |
| Selvas et al. | Tuning characteristics of cladding-pumped Neodymium-doped fiber laser | |
| CN117410810B (en) | Anti-reflection cascade pump optical fiber laser | |
| Zhao et al. | Laser characteristics of a new crystal Nd: Sr5 (PO4) 3F at 1.059 μm | |
| CN115954748A (en) | Single-fiber co-band pumping fiber laser |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |