CN110544866A - Sunlight-based efficient pumping single-frequency fiber laser - Google Patents
Sunlight-based efficient pumping single-frequency fiber laser Download PDFInfo
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- CN110544866A CN110544866A CN201910643454.3A CN201910643454A CN110544866A CN 110544866 A CN110544866 A CN 110544866A CN 201910643454 A CN201910643454 A CN 201910643454A CN 110544866 A CN110544866 A CN 110544866A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/005—Optical devices external to the laser cavity, specially adapted for lasers, e.g. for homogenisation of the beam or for manipulating laser pulses, e.g. pulse shaping
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06716—Fibre compositions or doping with active elements
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/0915—Processes or apparatus for excitation, e.g. pumping using optical pumping by incoherent light
Abstract
the invention discloses a single-frequency fiber laser based on sunlight high-efficiency pumping, which comprises: the system comprises a single-frequency laser seed source, a signal pumping beam combiner, a multimode fiber panel, a sunlight focusing mirror, a high-gain fiber, an optical filtering module and an optical isolator. Based on a scheme of seed source main oscillation power amplification and multi-mode cladding pumping, the invention firstly designs and optimizes optical parameters of the high-gain optical fiber to ensure that the high-gain optical fiber has good absorption and energy conversion efficiency on sunlight; secondly, sunlight is effectively focused through a sunlight focusing lens to serve as a pumping source, then converged sunlight is efficiently coupled into the multimode optical fiber through the multimode optical fiber panel, power amplification of single-frequency signal light is completed through the high-gain optical fiber, and therefore single-frequency optical fiber laser output based on sunlight high-efficiency pumping is achieved. The single-frequency fiber laser directly taking sunlight as a pumping source can be applied to the fields of space-based gravitational wave detection, laser weapons, space laser radars and the like.
Description
Technical Field
The invention belongs to the technical field of fiber lasers, and particularly relates to a single-frequency fiber laser based on sunlight efficient pumping.
Background
The single-frequency fiber laser is an important branch of the fiber laser technology which is developing rapidly and has a distinctive feature. Due to the characteristics of ultra-narrow spectral line width, ultra-long coherent length and the like, the single-frequency fiber laser has important application prospects in the fields of fiber sensing, laser radars, coherent beam combination, coherent communication, gravitational wave detection and the like. The sunlight pumping technology is characterized in that sunlight is directly used as a pumping source, the sunlight pumping technology has the characteristics of few energy conversion links, high reliability, long service life, high energy conversion efficiency and the like, and plays a unique role in the outer space in which the sunlight is used as a main energy form. The method has wide application prospect in various space applications related to laser, such as solar power stations, laser propulsion, space laser communication, space laser radars and the like.
At present, lasers taking direct sunlight as a pumping source mainly have three main types: sunlight pumping gas laser, sunlight pumping solid laser and sunlight pumping fiber laser. The sunlight pumping gas laser uses gas as a gain medium, and the research still stays in the theoretical and laboratory simulation stages because of low power density of sunlight, complex convergence system, large volume and high cost. The gain medium used in the sunlight pumping solid laser is solid material such as crystal, ceramic and the like, the convergence system is developed from a single imaging optical device to the combination of an imaging device and a non-imaging device, and has certain practical application capability. The sunlight pumping optical fiber laser is a potential sunlight pumping laser which obtains high energy conversion efficiency and high power laser output at present, and has the characteristics of flexible and mobile output laser direction, easy realization of cascade multiplication of power, convenient cooling, good beam quality, high power density and the like.
Due to the long optical path characteristic of the fiber-type laser gain medium, the fiber-type laser gain medium can almost absorb all the pump light along the optical axis direction. In contrast, the disk-type and rod-type gain media are difficult to absorb the same amount of excitation sunlight because of their extremely short working distance. Therefore, the optical fiber type gain medium has great advantages in the absorption of pump light, and the optical fiber has a large surface area/volume ratio and a better heat dissipation effect. At present, in the experiment of the sunlight direct pumping optical fiber laser, one of the biggest challenges is to couple and guide as much sunlight (pumping light) as possible into the core layer of the optical fiber; the second challenge is how to design and optimize the gain fiber material to achieve good absorption of sunlight (pump light) and high conversion efficiency. Generally speaking, the strongest irradiation region of sunlight is a visible light waveband, chromium ions and cerium ions have good absorption and energy transfer efficiency on the sunlight visible light waveband, and can be used as a sensitizer to be co-doped with some rare earth luminescent ions to manufacture a high-gain optical fiber, and the optical fiber material is expected to realize good absorption on the sunlight and improve the conversion efficiency.
The related patents are: (1) in 2018, the Shanghai satellite engineering research institute applied for a sunlight pumping optical fiber laser amplification system [ application number: CN201810638601, adopting a form of combining 4-path pump fiber and gain fiber, and respectively coupling the sunlight focused by the focusing mirror into the pump fiber to realize gain amplification of 1064 nm laser. However, the diameter of the optical fiber adopted in the above patent is millimeter-scale, and the optical fiber cannot be compatibly connected with a single-mode fiber laser device, and does not have single-frequency laser output characteristics. (2) In 2016, university in zhejiang was filed for erbium-doped fiber lasers based on solar pumping [ application No.: CN201621486563], a distributed feedback resonant cavity structure is formed by two bragg gratings and an erbium-doped fiber, and laser output is achieved by the erbium-doped fiber with a coating layer removed by focused sunlight side pumping. However, the structure of the sunlight gathering in the above patent is too simple, the power of the gathered and coupled pump sunlight is not high, and the sunlight gathering device does not have the single-frequency laser output characteristic.
Disclosure of Invention
The invention aims to overcome the defects and provides a sunlight-based efficient pumping single-frequency fiber laser.
The purpose of the invention is realized by at least one of the following technical solutions.
A sunlight-based efficient pumping single-frequency fiber laser comprises a single-frequency laser seed source, a first signal pumping beam combiner, a first multimode fiber panel, a first sunlight focusing mirror, a high-gain fiber, a second signal pumping beam combiner, a second multimode fiber panel, a second sunlight focusing mirror, an optical filtering module and an optical isolator; the single-frequency laser seed source is connected with a signal input end of a first signal pumping beam combiner, a pumping end of the first signal pumping beam combiner is connected with a tail fiber of a first multimode fiber panel, the first multimode fiber panel is placed in parallel with a first sunlight focusing mirror, and a signal output end of the first signal pumping beam combiner is connected with one end of a high-gain fiber; the signal input end of the second signal pumping beam combiner is connected with the other end of the high-gain optical fiber, the pumping end of the second signal pumping beam combiner is connected with the tail fiber of the second multimode optical fiber panel, the second multimode optical fiber panel is placed in parallel with the second sunlight focusing mirror, the input end of the optical filtering module is connected with the signal output end of the second signal pumping beam combiner, the output end of the optical filtering module is connected with the input end of the optical isolator, and finally amplified single-frequency laser is output by the output end of the optical isolator.
Furthermore, the single-frequency laser seed source is a fiber laser, a semiconductor laser or a non-planar annular cavity laser, the output state is continuous or pulse single-frequency laser, and the output waveband is 1.0 μm waveband, 1.5 μm waveband or 2.0 μm waveband.
Further, the first sunlight focusing mirror and the second sunlight focusing mirror are in a combination form of one or more of a Fresnel lens, a parabolic reflector, a multistage condenser or a convex lens.
Furthermore, the high-gain optical fiber is a luminous ion high-doped optical fiber, and the fiber core component is phosphate glass, germanate glass, silicate glass, tellurate glass or fluoride glass matrix material.
Further, the fiber core of the high-gain optical fiber is doped with chromium or cerium ions, and is also doped with one or more of neodymium, ytterbium, erbium, thulium or holmium ions, wherein the doping concentration of the chromium and cerium ions is greater than 0.1 wt%, the doping concentration of neodymium, ytterbium, erbium, thulium, holmium and other ions is greater than 1 wt%, and the ions are uniformly doped in the fiber core.
Furthermore, the high-gain optical fiber is a double-clad optical fiber, the diameter of a fiber core is 5-30 μm, and the diameter of an inner cladding is 125-1000 μm; the cross section of the inner cladding is in a circular, D-shaped, quadrilateral, hexagonal or octagonal structure, and the numerical aperture of the fiber core is 0.04-0.20.
Further, the high-gain optical fiber has a use length of 0.2-20 m.
Furthermore, the first signal pumping beam combiner and the second signal pumping beam combiner are both of (N + 1) multiplied by 1 multi-path pumping beam combining structures, and N is more than or equal to 2; the diameter of a fiber core of a passive double-clad optical fiber used at the signal input end and the signal output end of the two signal pump beam combiners is 5-30 mu m, and the diameter of an inner cladding is 125-1000 mu m; the cross section of the inner cladding is in a circular, D-shaped, quadrilateral, hexagonal or octagonal structure, and the numerical aperture of the fiber core is 0.04-0.20; the optical fiber used at the input end of the pump is a multimode optical fiber, the diameter of the fiber core is 105-400 μm, the diameter of the cladding is 125-440 μm, and the numerical aperture is 0.10-0.30.
Furthermore, the first multimode fiber panel and the second multimode fiber panel are both formed by tightly stacking and fixing N multimode fibers together to form a fiber panel and an array-shaped structure, and then grinding, polishing and coating the end faces of the fiber panels, wherein N is more than or equal to 2; the coating layer is highly transparent to the 400-1000 nm wave band, and the transmissivity is more than 95%; high reflectivity to other wavelength light, and high reflectivity greater than 95%.
Further, the optical filtering module is in a combined form of one or more than two of a narrow-band optical filter, a narrow-band fiber grating or an F-P filter.
By adopting the technical scheme of seed source Main Oscillation Power Amplification (MOPA) and multimode cladding pumping, firstly, the optical parameters of the high-gain optical fiber are designed and optimized, so that the high-gain optical fiber has good absorption and energy conversion efficiency on sunlight; then, the sunlight is efficiently focused by the sunlight focusing lens to be used as a pumping source and is coupled into the N multimode fibers through the multimode fiber panel, and the coated multimode fiber panel can filter stray light with non-pumping working wavelength in the sunlight to avoid thermal damage to the laser; meanwhile, the signal pumping beam combiner which works bidirectionally can provide up to 2N pumping coupling ports, high-efficiency coupling of sunlight (pumping light) is achieved, power amplification of single-frequency laser signals is completed by utilizing high-gain optical fibers with good sunlight absorption capacity, and therefore single-frequency optical fiber laser output based on sunlight high-efficiency pumping is obtained. The solar gain medium solves a series of problems of low sunlight coupling efficiency, insufficient sunlight absorption capacity of the gain medium and the like in the prior art. The single-frequency fiber laser directly taking sunlight as a pumping source can be applied to the fields of space-based gravitational wave detection, laser weapons, space laser radars and the like.
Compared with the prior art, the sunlight-based efficient pumping single-frequency fiber laser has the following advantages and technical effects:
(1) Sunlight is directly used as a pumping source, and the solar energy heat pump has the advantages of less energy conversion links, long service life, high reliability and the like;
(2) The sunlight focusing mirror efficiently focuses sunlight, and the sunlight is coupled into N multimode fibers of the (N + 1) × 1 signal pump beam combiner through the multimode fiber panel, so that stray light with non-pump working wavelength in the sunlight can be filtered by the coated multimode fiber panel, and the thermal damage to the laser can be effectively avoided;
(3) The signal pumping beam combiner working in two directions can provide up to 2N pumping coupling ports, and multi-node and high-efficiency coupling of sunlight (pumping light) is realized;
(4) The doped ions in the high-gain optical fiber have good absorption and energy conversion efficiency on sunlight, and have the characteristic of long optical path, so that the high-gain optical fiber can almost absorb all pump light along the direction of an optical axis, realize the efficient pumping process of the sunlight and finish the power amplification of a single-frequency laser signal;
(5) The high-gain optical fiber has a larger surface area/volume ratio, can realize a better heat dissipation effect by being placed on the surface of a general metal structural member, and does not need forced air cooling or water cooling.
Drawings
FIG. 1 is a schematic diagram of a multimode fiber optic faceplate;
FIG. 2 is a schematic diagram of a single-frequency fiber laser based on sunlight high-efficiency pumping according to an embodiment of the present invention;
in the figure: the system comprises a single-frequency laser seed source 1, a first signal pump beam combiner 2, a first multimode fiber panel 3, a first sunlight focusing mirror 4, a high-gain fiber 5, a second signal pump beam combiner 6, a second multimode fiber panel 7, a second sunlight focusing mirror 8, an optical filtering module 9 and an optical isolator 10.
Detailed Description
The following further describes embodiments of the present invention with reference to the attached drawings and specific examples, it should be noted that the scope of the present invention as claimed is not limited to the scope of the embodiments.
The structure of the multimode fiber optic face plate according to the embodiment of the present invention is schematically shown in fig. 1. The 18 multimode pumping fibers are tightly stacked and fixed together to form an optical fiber panel and an array structure, and the end face of the optical fiber panel is formed after grinding, polishing and film coating. The multimode fiber panel used in this example has the same structure, and the pigtail is 105/125 multimode fiber (i.e. with a core diameter of 105 μm, a cladding diameter of 125 μm, and a numerical aperture of 0.22), and the coating layer has high transmittance to 400-1000 nm band, with a transmittance of 99.9%, and high reflectivity to other wavelengths, with a reflectance of 99.5%. The multimode fiber panel has the characteristics of selective transmission of sunlight wavelength, large area and multi-node sunlight receiving.
Fig. 2 is a schematic diagram illustrating a principle of a sunlight-based high-efficiency pumping single-frequency fiber laser according to an embodiment of the present invention. It includes: the single-frequency laser optical fiber coupling device comprises a single-frequency laser seed source 1, a first signal pumping beam combiner 2, a first multimode optical fiber panel 3, a first sunlight focusing mirror 4, a high-gain optical fiber 5, a second signal pumping beam combiner 6, a second multimode optical fiber panel 7, a second sunlight focusing mirror 8, an optical filtering module 9 and an optical isolator 10. The structural relationship of each part is as follows: the single-frequency laser seed source 1 is connected with a signal input end of a first signal pumping beam combiner 2, a pumping end of the first signal pumping beam combiner 2 is connected with a tail fiber of a first multimode fiber panel 3, the first multimode fiber panel 3 is placed in parallel with a first sunlight focusing mirror 4, and a signal output end of the first signal pumping beam combiner 2 is connected with one end of a high-gain fiber 5. The signal input end of the second signal pump beam combiner 6 is connected with the other end of the high-gain optical fiber 5, the pump end of the second signal pump beam combiner 6 is connected with the tail fiber of the second multimode optical fiber panel 7, the second multimode optical fiber panel 7 is placed in parallel with the second sunlight focusing mirror 8, the input end of the optical filtering module 9 is connected with the signal output end of the second signal pump beam combiner 6, and the output end of the optical filtering module 9 is connected with the input end of the optical isolator 10. The finally amplified single-frequency laser light is output from the output terminal of the optical isolator 10.
The single-frequency laser seed source 1 used in this example is a DBR short cavity type single-frequency fiber laser, the output laser wavelength of which is 1064.2 nm, and which outputs a single-frequency, continuous fiber laser. The first and second signal pumping beam combiners used in this example are both (18 + 1) × 1 beam combiners, the diameters of the cores of the signal input end and output end optical fibers of the signal pumping beam combiner are both 20 μm, the diameters of the inner cladding are both 125 μm, the cross-sectional shapes of the inner cladding are both octagonal, the numerical apertures of the cores are both 0.08, the diameters of the outer cladding are both 250 μm, and the pumping optical fiber of the signal pumping beam combiner is 105/125 (namely, the diameter of the core is 105 μm, the diameter of the cladding is 125 μm, and the numerical aperture is 0.22) multimode optical fiber. The first sunlight focusing lens and the second sunlight focusing lens used in the embodiment are both convex lenses, and sunlight is focused by the convex lenses and then coupled into the pumping optical fibers through the multimode optical fiber panel. The high-gain optical fiber used in the embodiment is a silicate double-clad optical fiber doped with chromium ions and neodymium ions, wherein the doping concentration of the chromium ions is 0.2wt%, and the doping concentration of the neodymium ions is 2 wt%; the diameter of a fiber core of the double-cladding high-gain optical fiber is 20 micrometers, the diameter of an inner cladding is 125 micrometers, the cross section of the inner cladding is octagonal, the numerical aperture of the fiber core is 0.08, the diameter of the outer cladding is 250 micrometers, and the service length of the double-cladding high-gain optical fiber is 10 meters. The optical filter module 9 used in this example is a narrow-band fiber grating with an operating bandwidth of 1064 ± 1 nm. Firstly, seed source signal light enters a chromium/neodymium co-doped high-gain optical fiber 5 through the input end of a signal pumping beam combiner, then the gain amplification of the signal light is completed under the continuous and efficient pumping excitation of sunlight after convergent coupling, and finally the signal light is output through a narrow-band fiber grating and an optical isolator, so that the single-frequency fiber laser output after the efficient pumping amplification based on the sunlight is realized.
The above embodiments are preferred examples of the present invention, but the present invention is not limited to the above embodiments, and any other changes, modifications, substitutions and combinations that do not depart from the spirit and principle of the present invention should be regarded as equivalents and all such changes, modifications, substitutions and alterations are intended to be included in the scope of the present invention.
Claims (10)
1. A single-frequency fiber laser based on sunlight efficient pumping is characterized by comprising: the system comprises a single-frequency laser seed source (1), a first signal pump beam combiner (2), a first multimode fiber panel (3), a first sunlight focusing mirror (4), a high-gain fiber (5), a second signal pump beam combiner (6), a second multimode fiber panel (7), a second sunlight focusing mirror (8), an optical filtering module (9) and an optical isolator (10); the single-frequency laser seed source (1) is connected with a signal input end of a first signal pumping beam combiner (2), a pumping end of the first signal pumping beam combiner (2) is connected with a tail fiber of a first multimode fiber panel (3), the first multimode fiber panel (3) is placed in parallel with a first sunlight focusing mirror (4), and a signal output end of the first signal pumping beam combiner (2) is connected with one end of a high-gain fiber (5); the signal input end of a second signal pumping beam combiner (6) is connected with the other end of the high-gain optical fiber (5), the pumping end of the second signal pumping beam combiner (6) is connected with the tail fiber of a second multimode optical fiber panel (7), the second multimode optical fiber panel (7) is placed in parallel with a second sunlight focusing mirror (8), the input end of an optical filtering module (9) is connected with the signal output end of the second signal pumping beam combiner (6), the output end of the optical filtering module (9) is connected with the input end of an optical isolator (10), and finally amplified single-frequency laser is output by the output end of the optical isolator (10).
2. The sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the single-frequency laser seed source (1) is a fiber laser, a semiconductor laser or a non-planar annular cavity laser, the output state is continuous or pulse single-frequency laser, and the output waveband is 1.0 mu m waveband, 1.5 mu m waveband or 2.0 mu m waveband.
3. the sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the first sunlight focusing mirror (4) and the second sunlight focusing mirror (8) are in a combination form of one or more of Fresnel lenses, parabolic reflectors, multistage condensers or convex lenses.
4. the sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the high-gain optical fiber (5) is a luminous ion high-doped optical fiber, and the fiber core component is phosphate glass, germanate glass, silicate glass, tellurate glass or fluoride glass matrix material.
5. The sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the fiber core of the high-gain optical fiber (5) is doped with chromium or cerium ions, and is also doped with one or more of neodymium, ytterbium, erbium, thulium or holmium ions, wherein the doping concentration of the chromium and cerium ions is greater than 0.1 wt%, the doping concentration of the neodymium, ytterbium, erbium, thulium and holmium ions is greater than 1 wt%, and the ions are uniformly doped in the fiber core.
6. the sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the high-gain optical fiber (5) is a double-clad optical fiber, the diameter of a fiber core is 5-30 mu m, and the diameter of an inner cladding is 125-1000 mu m; the cross section of the inner cladding is in a circular, D-shaped, quadrilateral, hexagonal or octagonal structure, and the numerical aperture of the fiber core is 0.04-0.20.
7. The sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the high-gain optical fiber (5) has a use length of 0.2-20 m.
8. The sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the first signal pump beam combiner (2) and the second signal pump beam combiner (6) are both of an (N + 1) multiplied by 1 multi-path pump beam combining structure, and N is more than or equal to 2; the diameter of a fiber core of a passive double-clad optical fiber used at the signal input end and the signal output end of the two signal pump beam combiners is 5-30 mu m, and the diameter of an inner cladding is 125-1000 mu m; the cross section of the inner cladding is in a circular, D-shaped, quadrilateral, hexagonal or octagonal structure, and the numerical aperture of the fiber core is 0.04-0.20; the optical fiber used at the input end of the pump is a multimode optical fiber, the diameter of the fiber core is 105-400 μm, the diameter of the cladding is 125-440 μm, and the numerical aperture is 0.10-0.30.
9. The sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the first multimode fiber panel (3) and the second multimode fiber panel (7) are both obtained by tightly stacking and fixing N multimode fibers together to form a fiber panel and an array-shaped structure, then grinding, polishing and coating the end faces of the fiber panel, wherein N is more than or equal to 2; the coating layer is highly transparent to the 400-1000 nm wave band, and the transmissivity is more than 95%; high reflectivity to other wavelength light, and high reflectivity greater than 95%.
10. the sunlight-based high-efficiency pumped single-frequency fiber laser of claim 1, wherein: the optical filtering module (9) is in a combined form of one or more than two of a narrow-band optical filter, a narrow-band fiber grating or an F-P filter.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260049A (en) * | 2020-10-22 | 2021-01-22 | 上海卫星工程研究所 | Side pumping laser amplification system based on closed annular cavity and construction method |
| CN112670808A (en) * | 2020-12-11 | 2021-04-16 | 华南师范大学 | Sunlight pumping fiber laser |
| CN112670809A (en) * | 2020-12-11 | 2021-04-16 | 华南师范大学 | Sunlight pumping gas fiber laser |
| CN113325517A (en) * | 2021-08-03 | 2021-08-31 | 中国工程物理研究院激光聚变研究中心 | Optical fiber end cap and optical fiber laser |
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| CN106129795A (en) * | 2016-08-31 | 2016-11-16 | 山东海富光子科技股份有限公司 | Single frequency optical fiber laser with single-frequency semiconductor laser as seed source |
| CN108879312A (en) * | 2018-06-20 | 2018-11-23 | 上海卫星工程研究所 | Solar-pumped optical-fiber laser amplification system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106129795A (en) * | 2016-08-31 | 2016-11-16 | 山东海富光子科技股份有限公司 | Single frequency optical fiber laser with single-frequency semiconductor laser as seed source |
| CN108879312A (en) * | 2018-06-20 | 2018-11-23 | 上海卫星工程研究所 | Solar-pumped optical-fiber laser amplification system |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112260049A (en) * | 2020-10-22 | 2021-01-22 | 上海卫星工程研究所 | Side pumping laser amplification system based on closed annular cavity and construction method |
| CN112260049B (en) * | 2020-10-22 | 2021-08-24 | 上海卫星工程研究所 | Side pumping laser amplification system based on closed annular cavity and construction method |
| CN112670808A (en) * | 2020-12-11 | 2021-04-16 | 华南师范大学 | Sunlight pumping fiber laser |
| CN112670809A (en) * | 2020-12-11 | 2021-04-16 | 华南师范大学 | Sunlight pumping gas fiber laser |
| CN112670809B (en) * | 2020-12-11 | 2023-08-11 | 华南师范大学 | Sunshine pumping gas optical fiber laser |
| CN113325517A (en) * | 2021-08-03 | 2021-08-31 | 中国工程物理研究院激光聚变研究中心 | Optical fiber end cap and optical fiber laser |
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