CN109149349A - A kind of disc waveguide laser crystal of three-decker - Google Patents
A kind of disc waveguide laser crystal of three-decker Download PDFInfo
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- CN109149349A CN109149349A CN201811166495.XA CN201811166495A CN109149349A CN 109149349 A CN109149349 A CN 109149349A CN 201811166495 A CN201811166495 A CN 201811166495A CN 109149349 A CN109149349 A CN 109149349A
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/163—Solid materials characterised by a crystal matrix
- H01S3/164—Solid materials characterised by a crystal matrix garnet
- H01S3/1643—YAG
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1606—Solid materials characterised by an active (lasing) ion rare earth dysprosium
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/161—Solid materials characterised by an active (lasing) ion rare earth holmium
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1611—Solid materials characterised by an active (lasing) ion rare earth neodymium
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1616—Solid materials characterised by an active (lasing) ion rare earth thulium
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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
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1618—Solid materials characterised by an active (lasing) ion rare earth ytterbium
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- Electromagnetism (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
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- Optics & Photonics (AREA)
- Lasers (AREA)
Abstract
The invention discloses a kind of disc waveguide laser crystals of three-decker, its internal layer is the YAG crystal cylinder that undopes, middle layer is doping YAG crystal cylinder, outer layer is the YAG crystal cylinder that undopes, internal layer, middle layer, the length of outer layer are identical, the doping YAG crystal cylinder of middle layer, doping YAG are any one in Nd:YAG, Yb:YAG, Tm:YAG, Ho:YAG, Tm:Ho:YAG, Er:YAG.The beneficial effects of the present invention are thoroughly solve the problems, such as planar waveguide laser crystal self-excitation radiation amplification scale-up problem and edge effect.
Description
Technical field
The present invention relates to the disc waveguide laser crystals of a kind of laser crystal, especially three-decker.
Background technique
High power Full solid-state solid laser has important application in fields such as industrial processes, national defence, scientific researches.With answering
Development, high power solid state laser is constantly towards higher power, higher efficiency, more high light beam quality, smaller volume, tighter
The structure direction that gathers development.But with increasing for output power, solid state laser gain media interior fuel factor seriously constrains conversion
The raising of efficiency destroys beam quality, it has to install huge and complicated cooling system additional so that laser it is bulky,
Structure tends to be complicated.In order to solve gain media fuel factor, laser device output power level, high power solid state laser are improved
Club-shaped solid laser device, slab solid-state laser, disc shaped solid state laser and optical fiber laser have successively been developed,
Club-shaped solid laser device and traditional plate solid laser, can not be complete since size is larger on three-dimensional for gain media
Full effective solution fuel factor problem, therefore output power level is still limited, monolithic lath maximum power output is 5kW left at present
It is right；Disc shaped solid state laser, gain media very thin thickness, the heat dissipation of very good solution and gain media temperature uniformity are asked
Topic, but complexity is encapsulated, heat sink welding is difficult, and monolithic disc size is limited, and single-deck piece peak power output is also the left side 5kW at present
It is right；Double-clad optical fiber laser, since with good heat-sinking capability, beam Propagation has been limited in gain media well
Portion possesses splendid beam quality, the high light beam quality laser output of higher power level may be implemented, but due to optical fiber core diameter
Smaller, host material is glass, and optic damage threshold value is low, and single fiber output power is limited, and there are bottlenecks for output power.
Technical staff develops a kind of two-dimensional surface waveguide lath high power solid state laser, i.e., will mix ytterbium yttrium-aluminium-garnet
(Yb:YAG) laser crystal, undope YAG crystal and sapphire crystal, but two-dimensional surface waveguide lath structure solid laser device
There is also serious technical bottlenecks: first is that lath gain media very thin thickness, width is very big, and light beam is typical wide aspect ratio
Light beam, the transmission and correction of light beam are difficult, and power density is high, and spontaneous radiation enlarge-effect is serious, and there is serious edge effects
It answers；Second is that complex manufacturing technology, double clad planar waveguiding structure lath is difficult to obtain.These technological deficiencies are solved, it can be from two
A aspect considers: being on the one hand to change existing structure, makes ring structure, eliminates edge effect；It on the other hand is solution
Certainly planar waveguiding structure lath preparation process problem reduces preparation process difficulty, realizes low cost, highly reliable preparation.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of disc waveguide laser crystals of three-decker.
The present invention is achieved through the following technical solutions.
A kind of disc waveguide laser crystal of three-decker, internal layer are the YAG crystal cylinder that undopes, and middle layer is doping
YAG crystal cylinder, outer layer are the YAG crystal cylinder that undopes, and internal layer, middle layer, the length of outer layer are identical, the doping of middle layer
YAG crystal cylinder, doping YAG are any one in Nd:YAG, Yb:YAG, Tm:YAG, Ho:YAG, Tm:Ho:YAG, Er:YAG
Kind.
Further, the length of internal layer, middle layer, outer layer is in 30~200mm.
Further, the internal diameter of internal layer is 5~48mm, and wall thickness is 1~3mm.
Further, the internal diameter of middle layer and the outer diameter of internal layer match, and 50~300 microns of wall thickness.
Further, the internal diameter of outer layer and middle layer outer diameter phase, wall thickness are 1~3mm.
Beneficial effects of the present invention:
The laser crystal thoroughly solves planar waveguide laser crystal self-excitation radiation and puts in planar waveguide laser crystal phase ratio
Big scale-up problem and edge effect problem, light beam are center of circle symmetrical structure, without complicated correction when use, are highly suitable for
Realize high power laser light output.
Specific embodiment
Below according to embodiment, invention is further described in detail.
The present invention, the disc waveguide laser crystal of three-decker, by inside and outside two layers undope YAG crystal cylinder and one
Layer doping YAG crystal cylinder composition, the length of three layer crystal body cylinders is identical, between 30~200mm.
Adulterating YAG is any one in Nd:YAG, Yb:YAG, Tm:YAG, Ho:YAG, Tm:Ho:YAG, Er:YAG.
The internal diameter of internal layer YAG cylinder is 5~48mm, and wall thickness is 1~3mm；The internal diameter of the Re:YAG crystal cylinder of middle layer
Match with the outer diameter of internal layer YAG crystal, 50~300 microns of wall thickness；The wall thickness of outer layer YAG cylinder is 1~3mm, and internal diameter is in
Interbed Re:YAG crystal outside diameter of cylinder matches.
With the high-quality YAG monocrystalline of Artificial Growth, (Re is one of Nd, Yb, Er, Tm, Ho ion or several to doping Re:YAG
Kind) monocrystalline is initial feed, according to the disc waveguide crystal element size choosing of final processing preparation from the crystal boule of growth
Take corresponding crystal element, it is contemplated that machining allowance, in terms of crystal diameter, choosing cuts crystal element diameter than constituting disc waveguide
The big 1mm or more of the final outer diameter of crystal corresponding assembly, length 5mm or more more than disc waveguide crystal element final lengths.Then it adopts
Crystal element blank material is cut into from crystal boule with Conventional machining methods.
For the ease of realizing the thermal diffusion bonding between any inside and outside two layers cylinder-shaped crystal, using ultrasound rotation processing
Method and machine optical grinding polishing method and, the crystal blank material that cuts out of choosing is processed into the cylinder for slightly having certain taper,
The use of disc waveguide laser crystal and wave are not influenced in order to ensure the machining accuracy of crystal and the optical cement in later period, bonding, and ensure
Laser propagation effect is led, the initial wall thickness of every layer of cylinder is no less than 2mm, and the taper of each layer cylinder wants as small as possible, in 1:200~1:
Between 1000, inner layer cylinder outer surface taper and the inner surface taper of outer layer cylinder match.
Using classic mechanical polishing method, the outer or inner surface between each layer crystal body cylinder is carried out at optical precision polishing
It is horizontal not higher than 10-5 grades to be polished to surface roughness Ra≤0.7nm, finish for reason.
The crystal cylinder of completion of processing is impregnated by 12h or more using potassium bichromate washing lotion or concentrated sulfuric acid solution, is then rushed
Wash clean.
Internal layer crystal cylinder (YAG) is inserted in middle layer (Re:YAG or YAG) inner hole, by the appearance of internal layer crystal cylinder
Face cannot have bubble together with the inner surface optical cement of outer layer crystal cylinder between two surfaces, otherwise need optical cement again.
By the good composite crystal cylinder of optical cement along the crucible or mold that cylinder center's line is vertically loaded into vacuum bonding furnace,
Cylinder interior and the external ZrO for being packed into partial size and being less than 1mm2Ceramic Balls or aluminium oxide ceramic ball, until not crossing above crystal
1cm or more covers the graphite to match with crucible internal diameter or mold outer diameter or ceramic platen in the upper surface of Ceramic Balls, and
Top applies the weight of 20~100kg.Then it vacuumizes, crystal is heat-treated, vacuum degree is not higher than 10-2Pa, heat treatment
For temperature between 1000 DEG C~1600 DEG C, constant temperature time is not less than 10h.
After composite crystal cylinder after taking out heat treatment, grinding and polishing treatment are carried out to the outer surface of composite cylinder, added
Work is to design thickness, and surface polishing is better than 10-5 grades of level to roughness lower than 0.7nm, finish, then repeatedly step,
Three layer crystal bodies are bonded together through Overheating Treatment.
Successively three layer crystal bodies are bonded together.
The MULTILAYER COMPOSITE crystal being bonded together is put in atmosphere high temperature furnace, 1300~1500 DEG C at a temperature of, move back
Fire is for 24 hours.
Using mechanical lapping and polishing method, the MULTILAYER COMPOSITE crystal cylinder inner surface for passing through annealing and outer surface are carried out
Optical precision polishing treatment, and it is worked into design thickness.Then optical precision processing method is used, to MULTILAYER COMPOSITE crystal cylinder
Both ends carry out grinding and precise polished processing, final disc waveguide laser crystal element can be obtained.
The above embodiments merely illustrate the technical concept and features of the present invention, and its object is to allow be familiar with this field technology
Personage can understand the content of present invention and be implemented, and it is not intended to limit the scope of the present invention.It is all according to the present invention
Equivalent change or modification made by Spirit Essence, should be covered by the scope of protection of the present invention.
Claims (5)
1. a kind of disc waveguide laser crystal of three-decker, which is characterized in that its internal layer is the YAG crystal cylinder that undopes, in
Interbed is doping YAG crystal cylinder, and outer layer is the YAG crystal cylinder that undopes, and internal layer, middle layer, the length of outer layer are identical, intermediate
The doping YAG crystal cylinder of layer, doping YAG are in Nd:YAG, Yb:YAG, Tm:YAG, Ho:YAG, Tm:Ho:YAG, Er:YAG
Any one.
2. the disc waveguide laser crystal of three-decker according to claim 1, which is characterized in that internal layer, middle layer, outer
The length of layer is in 30~200mm.
3. the disc waveguide laser crystal of three-decker according to claim 1, which is characterized in that the internal diameter of internal layer is 5
~48mm, wall thickness are 1~3mm.
4. the disc waveguide laser crystal of three-decker according to claim 3, which is characterized in that the internal diameter of middle layer with
The outer diameter of internal layer matches, and 50~300 microns of wall thickness.
5. the disc waveguide laser crystal of three-decker according to claim 4, which is characterized in that the internal diameter of outer layer is in
Interbed outer diameter phase, wall thickness are 1~3mm.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811166495.XA CN109149349A (en) | 2018-10-08 | 2018-10-08 | A kind of disc waveguide laser crystal of three-decker |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811166495.XA CN109149349A (en) | 2018-10-08 | 2018-10-08 | A kind of disc waveguide laser crystal of three-decker |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773048A (en) * | 2022-05-05 | 2022-07-22 | 闽都创新实验室 | Preparation method and application of composite ceramic material |
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| CN202107798U (en) * | 2011-05-30 | 2012-01-11 | 安徽环巢光电科技有限公司 | Heat preservation barrel applied in laser crystal growing process |
| CN104767106A (en) * | 2015-04-17 | 2015-07-08 | 山东大学 | Erbium doped yttrium aluminum garnet crystal inlaid optical waveguide amplifier and manufacturing method thereof |
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| CN106451040A (en) * | 2016-11-22 | 2017-02-22 | 上海卫星工程研究所 | Solar-pumped composite crystal with high absorption efficiency and radiating performance and preparation thereof |
| CN108418085A (en) * | 2017-10-27 | 2018-08-17 | 同济大学 | A kind of full crystal optical fibre and covering manufacture craft |
| CN108456926A (en) * | 2018-02-27 | 2018-08-28 | 同济大学 | A kind of method of the interior growth crystal optical fibre fibre core of Crystal cladding |
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2018
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN200993717Y (en) * | 2006-07-28 | 2007-12-19 | 中国科学院上海光学精密机械研究所 | Cladding Doped Slab Waveguide Laser Amplifier |
| CN202107798U (en) * | 2011-05-30 | 2012-01-11 | 安徽环巢光电科技有限公司 | Heat preservation barrel applied in laser crystal growing process |
| CN104767106A (en) * | 2015-04-17 | 2015-07-08 | 山东大学 | Erbium doped yttrium aluminum garnet crystal inlaid optical waveguide amplifier and manufacturing method thereof |
| CN105655864A (en) * | 2016-03-01 | 2016-06-08 | 中国科学院上海光学精密机械研究所 | Rare earth ion doped yttrium aluminum garnet laser material with sandwich ceramic and single-crystal composite structure and preparation method thereof |
| CN106451040A (en) * | 2016-11-22 | 2017-02-22 | 上海卫星工程研究所 | Solar-pumped composite crystal with high absorption efficiency and radiating performance and preparation thereof |
| CN108418085A (en) * | 2017-10-27 | 2018-08-17 | 同济大学 | A kind of full crystal optical fibre and covering manufacture craft |
| CN108456926A (en) * | 2018-02-27 | 2018-08-28 | 同济大学 | A kind of method of the interior growth crystal optical fibre fibre core of Crystal cladding |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114773048A (en) * | 2022-05-05 | 2022-07-22 | 闽都创新实验室 | Preparation method and application of composite ceramic material |
| WO2023213032A1 (en) * | 2022-05-05 | 2023-11-09 | 闽都创新实验室 | Preparation method for composite ceramic material and application of composite ceramic material |
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