CN105356289A - Composite garnet compound ytterbium-doped yttrium-calcium aluminosilicate - Google Patents
Composite garnet compound ytterbium-doped yttrium-calcium aluminosilicate Download PDFInfo
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- CN105356289A CN105356289A CN201510823891.5A CN201510823891A CN105356289A CN 105356289 A CN105356289 A CN 105356289A CN 201510823891 A CN201510823891 A CN 201510823891A CN 105356289 A CN105356289 A CN 105356289A
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- ytterbium
- laser
- garnet
- doped yttrium
- yttrium
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Abstract
The invention belongs to the technical field of photoelectron functional materials, particularly relates to a laser and femtosecond laser material, and provides a composite garnet compound ytterbium-doped yttrium-calcium aluminosilicate with the chemical formula being Yb<x>Y<3xy>Ca<y>Al<5y>Si<y>O<12>, wherein the doping content of Yb is x which is greater than 0 and less than or equal to 1.5, and the doping contents of Ca and Si are y which is greater than 0 and less than or equal to 1.5. A synthesis method of the ytterbium-doped yttrium-calcium aluminosilicate adopts a high temperature solid state method, the synthesis environment is the air, and the structure type belongs to a garnet structure. Compared with ytterbium-doped yttrium-aluminum garnet, the composite garnet compound ytterbium-doped yttrium-calcium aluminosilicate is wider in absorption and emission bandwidth, more suitable for a laser diode pump, and conducive to acquiring middle and high power femtosecond laser with shorter pulse width.
Description
Technical field
The invention belongs to technical field of optoelectronic functional materials, particularly relate to as laser and femtosecond laser material.
Background technology
Femtosecond laser is the laser of impulse wave in femtosecond magnitude, and it possesses unique ultrashort pulse, superpower characteristic, can obtain high peak light intensity with lower pulse energy, is one of important directions of current laser cutting edge technology development.Due to the characteristic of femtosecond laser brilliance, femto-second laser becomes technical equipment important in laser field and LASER Light Source, directly apply to retrofit and laser communications, have irreplaceable status in fields such as medical science, nuclear physics, femtosecond pulse spectroscopy, the development of microminiature satellite and ultra high-speed optical communications simultaneously.In recent years, along with developing rapidly of high power laser diode, the research and production of all solid state femto-second laser becomes the focus of new high-tech industry, femtosecond laser material is as its core work material, because of performance and the important application of its uniqueness, become one of emphasis of whole laser technology field development.
With yttrium-aluminium-garnet (Y
3al
5o
12) for the garnet material of representative, there is the features such as isotropism, high heat conductance, high optical quality, excellent mechanical strength and physical and chemical performance, particularly receive much attention in Laser output near 1 micron, through the research and development of nearly 50 years, the yttrium-aluminium-garnet of ytterbium doping became a kind of very important laser material and femtosecond laser material.The people such as Japanese Scientists SadaoUemura adopt kerr lens mode locking technology, to mix ytterbium yttrium-aluminium-garnet (Yb:Y
3al
5o
12) as gain media, to have successfully been obtained pulsewidth be 35fs power output to crystal is the pulse laser of 107mW; Chinese Scientists Wei Zhi justice waits people to adopt semiconductor saturable absorption mode-locking technique, have successfully been obtained the pulse laser that pulsewidth is 1.9W for 418fs power output to mix ytterbium yttrium aluminum garnet transparent ceramic equally as gain media.Along with the development of high power laser diode, in high-power femtosecond laser industry and sciemtifec and technical sphere occupy more and more important role, thin dish laser technology effectively can solve the heat dissipation problem of laser medium, is born and has been considered to the important laser technology of High Power Femtosecond Laser in output since development from it.The people such as Switzerland scientist J.AusderAu have carried out thin dish mode-locked laser experiment first in 2000, pulsewidth is obtained for 730fs power output is up to the pulse laser of 16.2W using yttrium aluminum garnet crystal with ytterbium doping as gain media, cause the concern of numerous scholar and more deep research subsequently, obtainable power output improves constantly always.Power output is successfully brought up to more than 100W by the people such as Germany scientist W.Schneider in 2014, and pulse duration is 800fs.The people such as Switzerland ClaraJ.Saraceno once summed up the thin dish mode-locked laser technology of nearly more than ten years, mixing ytterbium yttrium-aluminium-garnet is be applied to the material in this laser technology the earliest, also be most widely used so far, the W level power that traditional mode-locking technique obtains by thin dish mode-locking technique successfully brings up to 100W level, has started the new page of middle High Power Femtosecond Laser.But its pulse duration obtained but has been limited in about 700-800fs, it is too sharp-pointed that reason of searching to the bottom has been to mix the emission peak of ytterbium yttrium-aluminium-garnet near 1030nm, and its half-peak breadth only only has 9nm.As everyone knows, wider emission band is more conducive to obtaining shorter pulse laser, and for mixing ytterbium yttrium-aluminium-garnet, and sharp-pointed emission peak is that it becomes the critical defect of High Power Femtosecond Laser material in ideal.
Disordered structure, refer to that in crystal, some case is occupied by multiple atom simultaneously, within the scope of long-range in order, belong to crystal category, but partitive case site is unordered, the glass completely unordered with structure has similar part to this structure.When active ions mix after in the host crystal with disordered structure, if the case of institute's substitution atoms is unordered, then there will be multiple luminescence center and produce superimposed effect, thus causing it to absorb and emission band broadening.Ca
4yO (BO
3)
3, Ca
4gdO (BO
3)
3, CaGaAlO
4, CaYAlO
4and SrY
4(SiO
4)
3o etc. are a lot of, and laser crystal all has benefited from this disordered structure and obtains wider absorption and emission band after making to mix active ions.Therefore, structural analysis is combined with spectroscopy and laser performance, carry out broadening by design and structure disordered structure for mixing ytterbium yttrium-aluminium-garnet it mixes Yb
3+after absorption and emission band, thus be expected to shorten the laser pulse width that obtains using it as gain media.
Mayenite garnet [Ca
3al
2(SiO
4)
3] be a kind of natural garnet, it has high heat conductance, excellent mechanical strength and physical and chemical performance equally.Because itself and yttrium-aluminium-garnet belong to garnet structure together, architectural feature is quite similar, characteristic ion (Y
3+and Ca
2+; 4 coordination Al
3+and Si
4+) between ionic radius very close, a kind of composite garnet can be formed after therefore appropriate mayenite garnet being mixed yttrium-aluminium-garnet.Owing to there is metal cation Y in this composite garnet
3+and Ca
2+between Distribution Statistics, namely construct the composite garnet with disordered structure, as active ions Yb
3+after mixing, Y can be occupied simultaneously
3+and Ca
2+position, there is multiple luminescence center, thus its spectral bandwidth of broadening.Absorption band after broadening will be more suitable for laser diode pump-coupling, and the emission band after broadening will be conducive to exporting the femtosecond laser of more short pulse duration.
Summary of the invention
The object of the invention is to open a kind of composite garnet compound and mix ytterbium aluminosilicate yttrium calcium, its chemical formula is Yb
xy
3-x-yca
yal
5-ysi
yo
12yb doping content is 0<x≤1.5, the doping content of Ca and Si is 0<y≤1.5, it is compared and mixes ytterbium yttrium-aluminium-garnet and have wider absorption and transmitted bandwidth, more be applicable to laser diode-pumped, and be conducive to obtaining the middle High Power Femtosecond Laser of more short pulse duration.
Technical scheme of the present invention is as follows:
Concrete chemical equation is:
xYb
2O
3+(3-x-y)Y
2O
3+2yCaCO
3+(5-y)Al
2O
3+2ySiO
2＝2Yb
xY
3-x-yCa
yAl
5-ySi
yO
12+2yCO
2↑
Wherein, Yb doping content is 0<x≤1.5, and the doping content of Ca and Si is 0<y≤1.5.Raw materials used and purity is: Yb
2o
3(99.99%), Y
2o
3(99.99%), Al
2o
3(analyzing pure), SiO
2(analyzing pure) and CaCO
3(analyzing pure).
The synthesis of mixing ytterbium aluminosilicate yttrium calcium adopts high temperature solid-state method, and synthetic environment is air, and detailed process is as follows: initial feed is Yb
2o
3, Y
2o
3, Al
2o
3, SiO
2and CaCO
3, take raw material according to chemical equation according to stoichiometric proportion; Briquet material after grinding in ball grinder stirs; Be placed in Muffle furnace again after block material is placed in corundum cup and be warming up to 1200-1400 DEG C, Isothermal sinter synthesis 10-50 hour; After being down to room temperature taking-up, ground and mixed evenly, is again placed in Muffle furnace after briquet material and is warming up to 1400-1600 DEG C again; Isothermal sinter synthesis 10-50 hour, takes out after being down to room temperature.
Carried out X-ray powder diffraction analysis to mixing ytterbium aluminosilicate yttrium calcium, the peak type of gained diffracting spectrum and peak position are all consistent with ICSD lane database yttrium-aluminium-garnet pure phase, illustrate that obtained compound has the garnet structure the same with yttrium-aluminium-garnet.Powder absorption spectrum and emission spectrum test has been carried out to mixing ytterbium aluminosilicate yttrium calcium, result shows that its absorption spectrum is compared with emission spectrum and mixes ytterbium yttrium-aluminium-garnet and all occurred broadening phenomenon, and along with the increase broadening of mayenite garnet doping content more obvious.Therefore, ytterbium aluminosilicate yttrium calcium of mixing prepared in the present invention is expected to become more applicable laser diode-pumped middle High Power Femtosecond Laser material, can also solve the difficult point of mixing the pulse duration of ytterbium yttrium-aluminium-garnet in thin dish mode-locked laser application and cannot shorten further preferably simultaneously.
Embodiment
Below in conjunction with specific embodiment, the invention will be further described, but should not limit the scope of the invention with this.
Embodiment 1:
Ytterbium aluminosilicate yttrium calcium Yb is mixed in preparation
xy
3-x-yca
yal
5-ysi
yo
12(x=0.3; Y=0.3,0.6,0.9,1.2,1.5), initial feed is Yb
2o
3, Y
2o
3, Al
2o
3, SiO
2and CaCO
3, take raw material according to chemical equation respectively according to stoichiometric proportion; Briquet material after grinding in ball grinder stirs; Be placed in Muffle furnace again after block material is placed in corundum cup and be warming up to 1200-1400 DEG C, Isothermal sinter synthesis 10-50 hour; After being down to room temperature taking-up, ground and mixed evenly, is again placed in Muffle furnace after briquet material and is warming up to 1400-1600 DEG C again; Isothermal sinter synthesis 10-50 hour, takes out after being down to room temperature.X-ray powder diffraction analysis shows that in the thing phase of five kinds of compounds and ICSD database, yttrium-aluminium-garnet pure phase is consistent, and illustrates that it has garnet structure; Powder absorption spectroanalysis shows, the absorption half-peak breadth of five kinds of compounds near 933nm is respectively 60nm, 67nm, 71nm, 72nm and 74nm, absorption half-peak breadth near 968nm is respectively 31nm, 34nm, 35nm, 35nm and 36nm, compare the half-peak breadth of mixing ytterbium yttrium-aluminium-garnet 18nm near 940nm and the half-peak breadth of 4nm all has obvious broadening near 968nm, and broadening is more obvious along with the increase of mayenite garnet content; Emission spectrographic analysis shows, the absorption half-peak breadth of five kinds of compounds near 1030nm is respectively 12nm, 14nm, 17nm, 19nm and 21nm, compare the half-peak breadth of mixing ytterbium yttrium-aluminium-garnet 9nm near 1030nm and all have obvious broadening, and broadening is more obvious along with the increase of mayenite garnet content.
Claims (3)
1. mix ytterbium aluminosilicate yttrium calcium, it is characterized in that: chemical formula is Yb
xy
3-x-yca
yal
5-ysi
yo
12, Yb doping content is 0<x≤1.5, and the doping content of Ca and Si is 0<y≤1.5, belongs to garnet structure.
2. mix the purposes of ytterbium aluminosilicate yttrium calcium as claimed in claim 1, it is characterized in that: this compound can be used for being prepared into fluorescent material, laser ceramics and laser crystal.
3. mix the purposes of ytterbium aluminosilicate yttrium calcium as claimed in claim 1, it is characterized in that: the fluorescent material prepared by this compound, laser ceramics and laser crystal can be used for producing continuous laser, tunable laser and femtosecond laser.
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|---|---|---|---|
| CN201510823891.5A CN105356289A (en) | 2015-11-24 | 2015-11-24 | Composite garnet compound ytterbium-doped yttrium-calcium aluminosilicate |
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|---|---|---|---|
| CN201510823891.5A CN105356289A (en) | 2015-11-24 | 2015-11-24 | Composite garnet compound ytterbium-doped yttrium-calcium aluminosilicate |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002009245A2 (en) * | 2000-07-21 | 2002-01-31 | Utar Scientific Inc. | An upconversion active gain medium and a micro-laser on the basis thereof |
| US20040062699A1 (en) * | 2002-09-25 | 2004-04-01 | Matsushita Electric Industrial Co. | Inorganic oxide and phosphor |
| CN1955116A (en) * | 2005-10-24 | 2007-05-02 | 富士胶片株式会社 | Inorganic compound, composition and molded body containing the same, light emitting device, and solid laser device |
| CN101018841A (en) * | 2004-08-11 | 2007-08-15 | 独立行政法人物质·材料研究机构 | Phosphor, production method thereof and light emitting instrument |
-
2015
- 2015-11-24 CN CN201510823891.5A patent/CN105356289A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002009245A2 (en) * | 2000-07-21 | 2002-01-31 | Utar Scientific Inc. | An upconversion active gain medium and a micro-laser on the basis thereof |
| US20040062699A1 (en) * | 2002-09-25 | 2004-04-01 | Matsushita Electric Industrial Co. | Inorganic oxide and phosphor |
| CN101018841A (en) * | 2004-08-11 | 2007-08-15 | 独立行政法人物质·材料研究机构 | Phosphor, production method thereof and light emitting instrument |
| CN1955116A (en) * | 2005-10-24 | 2007-05-02 | 富士胶片株式会社 | Inorganic compound, composition and molded body containing the same, light emitting device, and solid laser device |
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Application publication date: 20160224 |
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