CN116526263A - Honeycomb type laser amplifying structure - Google Patents
Honeycomb type laser amplifying structure Download PDFInfo
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- CN116526263A CN116526263A CN202310420842.1A CN202310420842A CN116526263A CN 116526263 A CN116526263 A CN 116526263A CN 202310420842 A CN202310420842 A CN 202310420842A CN 116526263 A CN116526263 A CN 116526263A
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- 239000013307 optical fiber Substances 0.000 claims abstract description 62
- 239000013078 crystal Substances 0.000 claims abstract description 47
- 230000003321 amplification Effects 0.000 claims abstract description 17
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 17
- 238000005253 cladding Methods 0.000 claims abstract description 14
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 20
- 239000000463 material Substances 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 229910003460 diamond Inorganic materials 0.000 claims description 4
- 239000010432 diamond Substances 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 4
- 150000002910 rare earth metals Chemical class 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 241000579895 Chlorostilbon Species 0.000 claims description 3
- 229910019142 PO4 Inorganic materials 0.000 claims description 3
- 239000000919 ceramic Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- IJKVHSBPTUYDLN-UHFFFAOYSA-N dihydroxy(oxo)silane Chemical compound O[Si](O)=O IJKVHSBPTUYDLN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010976 emerald Substances 0.000 claims description 3
- 229910052876 emerald Inorganic materials 0.000 claims description 3
- 239000002223 garnet Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- -1 oxide Substances 0.000 claims description 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 3
- 239000010452 phosphate Substances 0.000 claims description 3
- 239000010979 ruby Substances 0.000 claims description 3
- 229910001750 ruby Inorganic materials 0.000 claims description 3
- 229910052594 sapphire Inorganic materials 0.000 claims description 3
- 239000010980 sapphire Substances 0.000 claims description 3
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 claims description 3
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 12
- 238000000034 method Methods 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 9
- 230000005540 biological transmission Effects 0.000 abstract description 4
- 238000009434 installation Methods 0.000 abstract description 3
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- 238000005516 engineering process Methods 0.000 description 3
- 230000009022 nonlinear effect Effects 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 3
- 239000002918 waste heat Substances 0.000 description 3
- 238000004026 adhesive bonding Methods 0.000 description 2
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- 238000004891 communication Methods 0.000 description 2
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- 230000004927 fusion Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 238000000233 ultraviolet lithography Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
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- 239000003365 glass fiber Substances 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
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Classifications
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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
- H01S3/06704—Housings; Packages
-
- 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
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0405—Conductive cooling, e.g. by heat sinks or thermo-electric 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
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
-
- 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
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
-
- 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
-
- 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
- H01S3/06754—Fibre amplifiers
- H01S3/06758—Tandem amplifiers
-
- 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
- H01S3/06791—Fibre ring lasers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Lasers (AREA)
Abstract
The invention is suitable for the technical field of laser amplification, and provides a honeycomb type laser amplification structure which comprises a plurality of layers of heat sinks arranged at intervals; the first-stage disc optical fiber lasers are arranged between every two layers of heat sinks, and the adjacent two stages of disc optical fiber lasers are connected through a conveying optical fiber; the disc optical fiber laser is annular and comprises a laser crystal waveguide and a cladding layer covered outside the laser crystal waveguide, the laser crystal waveguide is spiral, the size of the disc optical fiber laser is gradually increased along with the increase of optical power in a step-by-step amplifying process, and the heat accumulated during laser working can be effectively reduced by using the thermal lens effect in the laser operating process; the mode that a plurality of discs are amplified step by step is adopted, so that output light with higher power can be obtained; all the components are integrated together, the structure is compact, the installation and the debugging are fast, the optical amplification can be completed through single transmission, the repeated reflection of energy in the crystal is avoided, and the generation of a thermal effect is further restrained.
Description
Technical Field
The invention belongs to the technical field of laser amplification, and particularly relates to a honeycomb type laser amplification structure.
Background
Fiber lasers, typically rare earth doped glass fibers, are very widely used as gain media. As one of the currently mainstream laser types, advantages of the fiber laser include:
1. the heat-dissipating device has high surface area/volume ratio and good heat-dissipating effect, and can continuously work without forced cooling;
2. the fiber core has small diameter, high power density is easy to form in the fiber, the laser threshold is lower, the gain is higher, the linewidth is narrower, and the coupling loss with the optical fiber is small;
3. the optical fiber has good flexibility, so that the optical fiber laser has the characteristics of small and exquisite flexibility, compact structure, higher performance price and easiness in system integration;
4. the optical fiber also has a relatively large number of tunable parameters and selectivities, and can obtain a relatively wide tuning range, good dispersion and stability.
Disc lasers, also known as disc lasers, are diode pumped solid state lasers, first demonstrated by Adolf Giesen at the university of stuttgart in the early 90 s of the 20 th century. The intrinsic difference from the conventional solid-state laser is the shape of the laser working substance, and the rod-like crystal of the conventional solid-state laser is changed into a disc crystal. The disk laser effectively solves the problem of thermal effect of the solid-state laser, and has a plurality of advantages compared with the traditional solid-state laser, including:
1. by adopting a modular structure, all components (a cooling system, a light guide system and a laser source) of the laser system can be replaced and upgraded at any time without splice points, the components are integrated together, the structure is compact, the occupied area is small, the installation and the debugging are quick, the optical fiber can be inserted and used at any time in a state that the laser continues to operate, no tools are needed, and alignment and adjustment are also not needed;
2. the geometric shape of the gain material can be fully utilized to efficiently dissipate heat, the diameters of laser and pumping light spots are far greater than the thickness of a disc, heat can flow to the radiating fins on the back surface quickly, and the heat accumulated during the laser working is effectively reduced, so that the thermal lens effect in the laser operation process is solved;
3. the laser does not change along with the change of the operation mode, and the problem of thermal lens effect is thoroughly solved by the disc laser, so that the laser power, the light spot size and the beam divergence angle are stable in the whole power range, the wave front of the beam is not distorted, and the high-quality output beam can be obtained;
4. the light spot size in the disc laser is larger, so that the light power density born by each optical element is smaller, the lower power density can not cause the damage of the optical element, and the nonlinear effect can not be generated, thereby ensuring the reliability of operation;
5. the gain of unit length is far higher than that of the fiber laser, and the high-power output can be realized.
The traditional optical fiber laser adopts a mode of increasing the length-diameter ratio of a gain medium, so that the influence of a thermal lens effect is reduced, but the power amplification is limited still due to the nonlinear effects such as stimulated Brillouin scattering and the like caused by high peak power. The glass material adopted by the fiber laser has the problems of low heat conductivity, low laser damage threshold value and the like, and the single crystal fiber is expected to solve the problems, but the single crystal fiber has poor flexibility and limited maximum length, and the cladding preparation technology is still immature, so that single-mode output is difficult to realize. In addition, the optical fiber laser has far lower electro-optical efficiency than the semiconductor laser, and the pump source has higher cost.
Although the disk laser solves the problems of thermal lens effect and nonlinear effect, due to the special working mode of the disk laser, a multiband and large-angle coating process is needed, the film can generate larger compressive stress in the coating process of the disk crystal, so that the crystal generates serious stress deformation, and the disk crystal needs to be processed by adopting an additional stress compensation control technology. The disc laser crystal under high power pumping has high bulk heat density, and heat sink with high heat exchange capacity is needed to be adopted to fix the ultrathin crystal on the diamond heat sink through special process. Disc lasers have high requirements for manufacturing processes and materials, and require high efficiency heat removal by impingement water cooling on the backside of the heat sink.
Disclosure of Invention
The present invention provides a honeycomb type laser amplifying structure, which aims to solve the above problems.
The invention is realized in that a honeycomb type laser amplifying structure comprises:
a laser package;
a multi-layer heat sink fixed in the laser tube shell at intervals;
the first-stage disc optical fiber lasers are arranged between every two layers of heat sinks, and the adjacent two stages of disc optical fiber lasers are connected through a conveying optical fiber;
the first-stage and last-stage disc optical fiber lasers are respectively connected with an input optical fiber and an output optical fiber;
the disc optical fiber laser is annular and comprises a laser crystal waveguide and a cladding layer covered outside the laser crystal waveguide, wherein the laser crystal waveguide is spiral.
As a further scheme of the invention: the heat sink material is one or more of metal and its compound, ceramic, graphite and diamond.
As a further scheme of the invention: the delivery optical fiber is fixed in the connecting pipe.
As a further scheme of the invention: the input optical fiber is fixed in the input tail pipe, and the output optical fiber is fixed in the output tail pipe.
As a further scheme of the invention: the cladding is an oxy-silicon compound.
As a further scheme of the invention: the laser crystal waveguide is a solid laser material doped with luminescent ions and having a refractive index higher than that of the cladding, and is one or more of rare earth garnet, oxide, phosphate crystal, tungstate crystal, silicate crystal, vanadate crystal, lithium niobate, ruby, emerald and sapphire material, and the doped element is one or more of Nd, yb, tm, ho.
As a further scheme of the invention: each layer of heat sink and the disc optical fiber laser above the heat sink form a layer of structure, and a gap serving as a water cooling channel is arranged between every two layers of structures.
As a further scheme of the invention: the size of the disc fiber laser is gradually increased as the optical power is increased in the step-by-step amplification process.
Compared with the prior art, the embodiment of the application has the following main beneficial effects:
1. the thickness of the single disc is very thin and is far smaller than the diameters of laser and pumping light spots and the thickness of the heat sink, wherein the generated waste heat can quickly flow to the heat sink on the back, and the waste heat is emitted to the outside through a laser tube shell connected with the heat sink, so that the accumulated heat during the laser working is effectively reduced, and the thermal lens effect in the laser operation process is solved;
2. the mode that a plurality of discs are amplified step by step is adopted, so that the problem of gain saturation existing in a single disc is effectively solved, and output light with higher power can be obtained;
3. all the components are integrated together, so that the structure is compact, the size is small, the installation and the debugging are fast, the assembly replacement and the upgrading are convenient, and the plug and play are realized;
4. the light amplification can be completed by single transmission, multiple reflection of energy in the crystal is avoided, the generation of thermal effect is further restrained, and the preparation can be completed by ultraviolet lithography, electron beam exposure, reactive ion etching and other technologies without introducing a reflective film or a Bragg grating, so that the preparation method has high process tolerance.
Drawings
FIG. 1 is a schematic view of the external structure of a honeycomb laser amplifying structure according to the present invention;
FIG. 2 is a schematic diagram of the internal structure of a honeycomb laser amplifying structure according to the present invention;
fig. 3 is a schematic structural diagram of a disc optical fiber laser in a honeycomb laser amplifying structure according to the present invention.
Reference numerals annotate: 1. a laser package; 2. a heat sink; 3. an output optical fiber; 4. a disk optical fiber laser; 5. a delivery fiber; 51. a cladding layer; 52. a laser crystal waveguide; 6. input optical fiber
Detailed Description
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the applications herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions. The terms first, second and the like in the description and in the claims or in the above-described figures, are used for distinguishing between different objects and not necessarily for describing a sequential or chronological order.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.
An embodiment of the present invention provides a honeycomb type laser amplifying structure, as shown in fig. 1-3, including:
a laser package 1;
the heat sink 2 is made of one or more of metal, a compound thereof, ceramic, graphite and diamond, and the heat sink 2 and the laser tube shell 1 can be fixed in a screw or clamping manner;
in this embodiment, the disc optical fiber laser 4 is preferably arranged on the surface of the heat sink 2 in a bonding manner, waste heat generated by the disc optical fiber laser 4 can quickly flow to the heat sink 2 at the back and be dispersed to the outside through the laser tube shell 1 connected with the heat sink 2, so that heat accumulated during laser operation is effectively reduced, the thermal lens effect in the laser operation process is solved, two adjacent stages of disc optical fiber lasers 4 are connected through the conveying optical fiber 5, and can be connected in a manner of fixed glue bonding, optical fiber fusion splicer coupling and the like, and in this embodiment, the conveying optical fiber 5 is fixed in a connecting pipe;
the disc optical fiber lasers 4 of the first stage and the last stage are respectively connected with an input optical fiber 6 and an output optical fiber 3, and can be connected in a mode of fixed glue bonding, optical fiber fusion splicer coupling and the like, in this embodiment, the input optical fiber 6 is fixed in an input tail pipe, and the output optical fiber 3 is fixed in an output tail pipe.
Further, the disc optical fiber laser 4 is in a ring shape, and comprises a laser crystal waveguide 52 and a cladding 51 covered outside the laser crystal waveguide 52, wherein the laser crystal waveguide 52 is in a spiral shape; in this embodiment, the disk of the disk optical fiber laser 4 preferably has an outer diameter of 2-5cm and a thickness of 20-30 μm, wherein the laser crystal waveguide 52 has a similar size to a single mode fiber, a thickness of about 10 μm, and a cladding thickness of about 5 μm.
Further, the size of the disc fiber laser 4 gradually increases as the optical power increases in the step-wise amplification process.
It will be appreciated that the signal light generated in the preceding stage is transmitted into the present stage through the input optical fiber 6 fixed by the input tailpipe, propagates in the helical laser crystal waveguide 52, amplifies the signal light further, and is transmitted to the following stage through the transmission optical fiber 5 in the connection pipe, as the power of the signal light increases, the size of each stage of the disk optical fiber laser 4 and the length of the laser crystal waveguide 52 therein also increase, and when the signal light is output from the last stage of the disk optical fiber laser 4, reaches a predetermined power, it is output from the output optical fiber connected to the output tailpipe.
It should be explained that the disc optical fiber laser 4 is based on the improved design of the disc laser, combines the advantages of the disc laser and the optical fiber laser, specifically, utilizes various mature micro-nano technical means such as ultraviolet lithography, electron beam exposure, reactive ion etching and the like to etch the single crystal optical fiber on the surface of the disc in the form of a waveguide, and deposits a cladding layer outside the waveguide;
the waveguide is a low-doped laser crystal, and the structure of the waveguide is a spiral on the surface of the disc, so that the waveguide can play roles of laser gain and mode field limitation simultaneously; the spiral structure can effectively utilize the surface area of the disc, so that the waveguide length is longer; the section size is similar to that of a single-mode fiber, and a larger length-diameter ratio can be achieved; the low doping concentration can effectively reduce absorption. Compared with the traditional fiber laser, the disk fiber laser 4 avoids multiple reflection of energy in the crystal on the basis of the advantages of the disk laser, further inhibits the generation of thermal effect, does not need to be coated with a film or carved with Bragg gratings to form a resonant cavity, is easier to manufacture, and has good application prospect;
specifically, the cladding 51 is an oxy-silicon compound, the laser crystal waveguide 52 is a solid laser material doped with luminescent ions, the refractive index of which is higher than that of the cladding 51, and is one or more of rare earth garnet, oxide, phosphate crystal, tungstate crystal, silicate crystal, vanadate crystal, lithium niobate, ruby, emerald, sapphire and the like, and the doped element is one or more of Nd, yb, tm, ho.
In this embodiment, each layer of heat sink 2 and the disc optical fiber laser 4 above it form a layer of structure, and a gap serving as a water cooling channel is arranged between every two layers of structures, so that water cooling can be performed.
In summary, the present invention provides a honeycomb type laser amplifying structure, which has the following working principle: the signal light generated in the former stage is transmitted to the present stage through the input optical fiber 6 fixed by the input tail pipe, propagates in the spiral laser crystal waveguide 52, further amplifies the signal light, and is transmitted to the latter stage through the transmission optical fiber 5 in the connection pipe, and as the power of the signal light increases, the size of each stage of disc fiber laser 4 and the length of the laser crystal waveguide 52 therein also increases, and when the signal light is output from the last stage of disc fiber laser 4 to reach a predetermined power, it is output from the output optical fiber 3 passing through the output tail pipe.
It should be noted that, for simplicity of description, the foregoing embodiments are all illustrated as a series of acts, but it should be understood by those skilled in the art that the present invention is not limited by the order of acts, as some steps may be performed in other order or concurrently in accordance with the present invention. Further, those skilled in the art will also appreciate that the embodiments described in the specification are all preferred embodiments, and that the acts and modules referred to are not necessarily required for the present invention.
In the several embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described apparatus embodiments are merely illustrative, such as the above-described division of units, merely a division of logic functions, and there may be additional manners of dividing in actual implementation, such as multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or communication connection shown or discussed as being between each other may be an indirect coupling or communication connection between devices or elements via some interfaces, which may be in the form of telecommunications or otherwise.
The units described above as separate components may or may not be physically separate, and components shown as units may or may not be physical units, may be located in one place, or may be distributed over a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the scope of the present invention. It will be apparent that the described embodiments are merely some, but not all, embodiments of the invention. Based on these embodiments, all other embodiments that may be obtained by one of ordinary skill in the art without inventive effort are within the scope of the invention. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art may still combine, add or delete features of the embodiments of the present invention or make other adjustments according to circumstances without any conflict, so as to obtain different technical solutions without substantially departing from the spirit of the present invention, which also falls within the scope of the present invention.
Claims (8)
1. A honeycomb type laser amplifying structure, comprising:
a laser package;
a multi-layer heat sink fixed in the laser tube shell at intervals;
the first-stage disc optical fiber lasers are arranged between every two layers of heat sinks, and the adjacent two stages of disc optical fiber lasers are connected through a conveying optical fiber;
the first-stage and last-stage disc optical fiber lasers are respectively connected with an input optical fiber and an output optical fiber;
the disc optical fiber laser is annular and comprises a laser crystal waveguide and a cladding layer covered outside the laser crystal waveguide, wherein the laser crystal waveguide is spiral.
2. The honeycomb laser amplification structure of claim 1, wherein the heat sink material is one or more of metal and its compounds, ceramic, graphite, diamond.
3. The honeycomb laser amplification structure of claim 1, wherein the delivery fiber is fixed in a connecting tube.
4. The honeycomb laser amplification structure of claim 1, wherein the input optical fiber is fixed in an input tailpipe and the output optical fiber is fixed in an output tailpipe.
5. The honeycomb laser amplification structure of claim 4, wherein the cladding layer is an oxy-silicon compound.
6. The honeycomb laser amplification structure of claim 5, wherein the laser crystal waveguide is a solid laser material doped with luminescent ions having a higher refractive index than the cladding layer, and is one or more of rare earth garnet, oxide, phosphate crystal, tungstate crystal, silicate crystal, vanadate crystal, lithium niobate, ruby, emerald, and sapphire material, and the doped element is one or more of Nd, yb, tm, ho.
7. The honeycomb laser amplification structure of claim 1, wherein each heat sink and the disc fiber laser thereon form a structure, and a space serving as a water cooling channel is provided between each two structures.
8. The honeycomb laser amplification structure of claim 1, wherein the size of the disc fiber laser increases gradually as the optical power increases during the step-wise amplification.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310420842.1A CN116526263A (en) | 2023-04-14 | 2023-04-14 | Honeycomb type laser amplifying structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310420842.1A CN116526263A (en) | 2023-04-14 | 2023-04-14 | Honeycomb type laser amplifying structure |
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| CN116526263A true CN116526263A (en) | 2023-08-01 |
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| CN202310420842.1A Pending CN116526263A (en) | 2023-04-14 | 2023-04-14 | Honeycomb type laser amplifying structure |
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- 2023-04-14 CN CN202310420842.1A patent/CN116526263A/en active Pending
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