CN101701355A - Pulling growth method of neodymium-doped calcium yttrium aluminate laser crystal - Google Patents
Pulling growth method of neodymium-doped calcium yttrium aluminate laser crystal Download PDFInfo
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- 239000013078 crystal Substances 0.000 title claims abstract description 100
- 238000000034 method Methods 0.000 title claims abstract description 26
- DFENVCUUBABVIU-UHFFFAOYSA-N [Ca].[Y] Chemical compound [Ca].[Y] DFENVCUUBABVIU-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 239000000463 material Substances 0.000 claims abstract description 21
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 4
- 238000000137 annealing Methods 0.000 claims description 10
- 239000003153 chemical reaction reagent Substances 0.000 claims description 8
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 238000005303 weighing Methods 0.000 claims description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000010532 solid phase synthesis reaction Methods 0.000 claims description 6
- 238000010792 warming Methods 0.000 claims description 6
- 239000012298 atmosphere Substances 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 238000001816 cooling Methods 0.000 claims description 3
- 230000004927 fusion Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 230000006698 induction Effects 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 239000004570 mortar (masonry) Substances 0.000 claims description 3
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- 239000000126 substance Substances 0.000 abstract description 2
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- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 4
- 238000000862 absorption spectrum Methods 0.000 description 4
- 239000001257 hydrogen Substances 0.000 description 4
- 229910052739 hydrogen Inorganic materials 0.000 description 4
- 238000002156 mixing Methods 0.000 description 4
- 239000012299 nitrogen atmosphere Substances 0.000 description 4
- SBYHFKPVCBCYGV-UHFFFAOYSA-N quinuclidine Chemical compound C1CC2CCN1CC2 SBYHFKPVCBCYGV-UHFFFAOYSA-N 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 3
- 239000011575 calcium Substances 0.000 description 3
- 230000010287 polarization Effects 0.000 description 3
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- 229910018516 Al—O Inorganic materials 0.000 description 1
- -1 Argon ion Chemical class 0.000 description 1
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- 238000010521 absorption reaction Methods 0.000 description 1
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- 238000003776 cleavage reaction Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
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- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 1
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Abstract
Neodymium-doped yttrium calcium aluminate laser crystal (hereinafter abbreviated as Nd: CaYAlO)4) The method comprises the step of growing the Nd CaYAlO by pulling4Preparation of raw material for crystal and growing Nd CaYAlO by Czochralski method4And (3) single crystal. CaYAlO grown by the invention4The crystal has larger size, high optical quality, integrity, no cracking and good physical and chemical properties, and is an excellent luminescent substrate crystal material.
Description
Technical field
The present invention relates to field of crystal growth, particularly a kind of yttrium-calcium aluminate laser crystals of neodymium-doped (is designated hereinafter simply as Nd:CaYAlO
4) the Czochralski grown method.Specifically be exactly the Nd:CaYAlO that adopts the Czochralski grown large size and have high optical quality
4Laser crystals.
Background technology
1981, first femtosecond dye laser came out in the world, and the development of ultrafast laser has entered femtosecond (10
-15S) stage, femtosecond laser technology and science have been produced thus.This has a wide range of applications in various fields such as Superfast time resolution spectrum, microelectronics processing, light clock, metering, holography, heavy body optical communications.Present business-like femto-second laser mostly is the locked mode ti sapphire laser, but because the absorption spectrum of titanium jewel is positioned at the scope of visible light, usually the green (light) laser that adopts 515nm Argon ion laser or 532nm makes and has limited the laser structure complexity it and used widely as pumping source.For many years people studying can be with the laserable material of laser diode-pumped direct generation femtosecond laser output always, and wish to be developed into the femto-second laser that practical application can be provided.
ABCO
4(wherein A represents Ca, Sr or Ba to series compound, B represents Y or rare earth element, C represents Al, Ga or transition element) have a perovskite structure, because and oxide high temperature superconductor (as YBCO etc.) is an isomorphism, lattice mismatch rate low (＜0.3%), the substrate that is mainly used in the high temperature superconducting oxide film nineties is studied.ABCO
4Series compound belongs to disordered structure, and 2006, people such as Y.Zaouter were reported in Yb:CaGdAlO
4Realize laser diode-pumped femtosecond laser output in the crystal, having obtained pulsewidth is mode-locked laser output (Y.Zaouter, J.Didierjean, the F.Balembois of 47fs, G.Lucas Leclin, F.Druon, and P.Georges, J.Petit, P.Goldner, B.Viana, Opt.Lett.31 (2006) 119), this is so far at Yb
3+The shortest mode locking pulse laser output that is obtained in the doped crystal.In view of this result of study, Nd
3+Adulterated ABCO
4Serial crystal also is hopeful to obtain ultrashort pulse output.CaYAlO
4Also belong to ABCO
4Serial crystal, and up to the present, Nd
3+Adulterated CaYAlO
4Crystal is mainly obtained by the growth of laser base heating method, and resulting crystalline size is smaller, is approximately diameter 2mm, the crystal optical fibre of length 8mm.
Summary of the invention
The object of the present invention is to provide a kind of Czochralski grown method of yttrium-calcium aluminate laser crystals of neodymium-doped, the technical problem to be solved in the present invention is: adopt Czochralski grown large size Nd:CaYAlO 1.
4Laser crystals; 2. reduce Nd:CaYAlO
4Crystal is at the ftracture probability of cleavage of crystal growth deuterogenesis.The Nd:CaYAlO of the present invention's growth
4Crystal has large-size, crystal optics quality height, complete nothing cracking, physical and chemical performance is better, is a kind of good luminous host crystalline material.
Technical solution of the present invention is as follows:
A kind of pulling growth method of yttrium-calcium aluminate laser crystals of neodymium-doped, its characteristics are that this method comprises the following steps:
1. pulling growth Nd
x: CaY
1-xAlO
4The preparation of the raw material that crystal is used:
The molecular formula of the yttrium-calcium aluminate laser crystals of neodymium-doped is: (Nd
x: CaY
1-x)
2AlO
4, initial feed employing chemical reagent purity all is 99.999% Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3, raw material is by stoichiometric ratio x: (1-x): prepare burden at 1: 2, wherein x gets 0.004～0.012; Behind the occurrence of selected x, by described stoichiometric ratio difference weighing Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3, put into the mixed and careful grinding of mortar then, on hydropress, be pressed into tablet with the synthetic glass mould, adopt solid phase method at the synthetic Nd:CaYAlO of 1200 ℃ of following sintering of high temperature
4Polycrystalline piece material;
2. the iraurite crucible is put in described material taking-up and placed lifting furnace, adopt Czochralski grown Nd:CaYAlO
4Monocrystalline.
The concrete steps of described solid phase method agglomerate material are: tablet is packed in the alumina crucible, then crucible is put into retort furnace and be warming up to 1200 ℃ with 10 hours, behind the constant temperature 10 hours, be cooled to room temperature with 10 hours again and take out crucible, can obtain pulling growth Nd:CaYAlO
4Polycrystalline piece material.
Described Czochralski grown Nd:CaYAlO
4The concrete steps of monocrystalline are:
1. used iraurite crucible diameter is 70mm, highly is 3mm for 40mm, thickness; Described block of material put into the iraurite crucible and placed lifting furnace, vacuumize 1～10Pa after shove charge is intact, charge into 0.11～0.13MPa high pure nitrogen, adopt the Frequency Induction Heating iridium crucible, polycrystal raw material in the fusion crucible, and, make the complete homogenizing of melt in the crucible the scope constant temperature of 1860～1910 ℃ of the temperature that is higher than crystalline melting point 2 hours;
2. lifting rod lifts error and is lower than 1 μ m; Seed crystal is through the Nd:CaYAlO of X-ray diffractometer accurate pointing normal line of butt end direction for [100]
4Single crystal rod, in the crystal growing process, pull rate is 1～2mm/h, rotating speed is 5～10rpm;
3. the temperature of melt is reduced to the crystalline fusing point and locate to sow for 1810 ℃, promptly allow seed crystal contact with melt, constant temperature is after 1 hour, and adopting heats up slowly carries out lifting crystal growth, promptly so-called necking down stage; The diameter dimension for the treatment of growing crystal is during less than the seed crystal diameter, begins to adopt slowly that cooling process carries out the crystalline shouldering, when treating that the crystalline diameter dimension reaches predetermined size, and beginning constant temperature isodiametric growth; When isometrical crystal length reaches predetermined size, manually crystal is withdrawn from melt, promptly pull crystal;
4. charge into 0.002～0.003MPa oxygen after pulling crystal, slowly reduce to room temperature with the rate of temperature fall of 20～30 ℃/h;
5. with resulting crystal at H
2Anneal in the atmosphere, annealing process is to be warming up to 1000 ℃ with 10 hours, and constant temperature was cooled to room temperature with 10 hours after 6 hours again, and the crystal after the annealing becomes red-purple.
Technique effect of the present invention:
Characteristics of the present invention are to adopt crystal pulling method successfully to grow superior in quality Nd:CaYAlO
4Crystal.By single crystal structure determination, Nd:CaYAlO
4Crystal belongs to tetragonal system, and spacer is I4/mmm, and unit cell parameters is: a=0.3639nm, c=1.1861nm, V=0.1570nm
3Belong to perovskite structure, Ca and Y (Nd) case is C
4vSymmetry and ligancy are 9.In this structure, Ca and Y (Nd) are randomly dispersed within the middle of the Al-O octahedral layer, make Nd:CaYAlO
4The crystalline structure trend is unordered, and the glazed continuous, chaotic network structure of class causes absorbing and the emission spectrum inhomogeneous broadening, can be used for realizing the output of femtosecond mode-locked laser.
Description of drawings
Fig. 1 is 1%Nd:CaYAlO
4Crystalline polarization absorption spectrum;
Fig. 2 is 1%Nd:CaYAlO
4The unpolarized emmission spectrum of crystalline;
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit protection scope of the present invention with this.
Embodiment 1.
The pulling growth method of the yttrium-calcium aluminate laser crystals of neodymium-doped, this method comprises the following steps:
1. pulling growth Nd
x: CaY
1-xAlO
4The preparation of the raw material that crystal is used:
Initial feed employing chemical reagent purity all is 99.999% Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3, raw material is by stoichiometric ratio x: (1-x): prepare burden at 1: 2, choose x=0.01, with Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3High pure raw material was according to 0.01: 0.99: 1: 2 take by weighing reagent respectively, put into the mixed and careful grinding of mortar then, are pressed into tablet with the synthetic glass mould on hydropress, adopt solid phase method at the synthetic Nd:CaYAlO of 1200 ℃ of following sintering of high temperature
4Polycrystalline piece material;
2. the iraurite crucible is put in described material taking-up and placed lifting furnace, adopt Czochralski grown Nd:CaYAlO
4Monocrystalline.
The concrete steps of described solid phase method agglomerate material are: tablet is packed in the alumina crucible, then crucible is put into retort furnace and be warming up to 1200 ℃ with 10 hours, behind the constant temperature 10 hours, be cooled to room temperature with 10 hours again and take out crucible, can obtain pulling growth Nd:CaYAlO
4Polycrystalline piece material.
Described Czochralski grown Nd:CaYAlO
4The concrete steps of monocrystalline are:
1. used iraurite crucible diameter is 70mm, highly is 3mm for 40mm, thickness; Described block of material put into the iraurite crucible and placed lifting furnace, vacuumize 1Pa after shove charge is intact, charge into the 0.111MPa high pure nitrogen, adopt the Frequency Induction Heating iridium crucible, polycrystal raw material in the fusion crucible, and, make the complete homogenizing of melt in the crucible the scope constant temperature of 1860～1910 ℃ of the temperature that is higher than crystalline melting point 2 hours;
2. lifting rod lifts error and is lower than 1 μ m; Seed crystal is through the Nd:CaYAlO of X-ray diffractometer accurate pointing normal line of butt end direction for [100]
4Single crystal rod, in the crystal growing process, pull rate is 1mm/h, rotating speed is 10rpm;
3. the temperature of melt is reduced to the crystalline fusing point and locate to sow for 1810 ℃, promptly allow seed crystal contact with melt, constant temperature is after 1 hour, and adopting heats up slowly carries out lifting crystal growth, promptly so-called necking down stage; The diameter dimension for the treatment of growing crystal is during less than the seed crystal diameter, begins to adopt slowly that cooling process carries out the crystalline shouldering, when treating that the crystalline diameter dimension reaches predetermined size, and beginning constant temperature isodiametric growth; When isometrical crystal length reaches predetermined size, manually crystal is withdrawn from melt, promptly pulls crystal, growth parameter(s) shown in embodiment in the table 11;
4. charge into 0.002MPa oxygen after pulling crystal, slowly reduce to room temperature with the rate of temperature fall of 20 ℃/h; The 1%Nd:CaYAlO of Qu Chuing at last
4Crystal be maroon transparent, complete, do not ftracture.
5. with resulting crystal at H
2Anneal in the atmosphere, annealing process is to be warming up to 1000 ℃ with 10 hours, and constant temperature was cooled to room temperature with 10 hours after 6 hours again, and the crystal after the annealing becomes red-purple.
Nd:CaYAlO with above-mentioned growth
4Crystal is at H
2Anneal in the atmosphere, orientation, dicing behind the optical polish, is at room temperature tested its spectrum property, adopts Lambda 900 spectrophotometer tests polarization absorption spectrums.Adopt Fluorolog-3 fluorescence spectrophotometer test infra-red emission, it is the AlGaAs laser diode of 808nm that pumping source adopts wavelength.Fig. 1 is 1%Nd:CaYAlO
4Crystalline polarization absorption spectrum, wherein the strong absorption band of 800～815nm wave band helps adopting the AlGaAs laser diode to carry out pumping.Fig. 2 is 1%Nd:CaYAlO
4The unpolarized emmission spectrum of crystalline shows the 1%Nd:CaYAlO that is grown
4Crystal has the big emission and the bandwidth of an emission of broad, up to 21nm, helps realizing the output of locked mode femtosecond pulse at 1080nm place bandwidth of an emission.
Embodiment 2.
Choose x=0.004, with Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3High pure raw material was according to 0.004: 0.996: 1: 2 take by weighing reagent respectively, thorough mixing is back briquetting on hydropress evenly, pack into then and put into retort furnace in the alumina crucible, under 1200 ℃, sinter polycrystal into, then the iraurite crucible is put in the taking-up of piece material and placed lifting furnace, adopt Czochralski grown crystal, it is the Nd:CaYAlO of [100] that seed crystal adopts through X-ray diffractometer accurate pointing normal line of butt end direction
4Single crystal rod.Take out rough vacuum and in high pure nitrogen atmosphere, adopt Czochralski grown crystal.Growth parameter(s) charges into oxygen after pulling crystal shown in embodiment in the table 12, slowly reduce to room temperature then.The 0.4%Nd:CaYAlO of Qu Chuing at last
4Crystal be maroon transparent, complete, do not ftracture.Behind hydrogen annealing, color becomes red-purple.
Embodiment 3.
Choose x=0.006, with Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3High pure raw material was according to 0.006: 0.994: 1: 2 take by weighing reagent respectively, thorough mixing is back briquetting on hydropress evenly, pack into then and put into retort furnace in the alumina crucible, under 1200 ℃, sinter polycrystal into, then the iraurite crucible is put in the taking-up of piece material and placed lifting furnace, adopt Czochralski grown crystal, it is the Nd:CaYAlO of [100] that seed crystal adopts through X-ray diffractometer accurate pointing normal line of butt end direction
4Single crystal rod.Take out rough vacuum and in high pure nitrogen atmosphere, adopt Czochralski grown crystal.Growth parameter(s) charges into oxygen after pulling crystal shown in embodiment in the table 13, slowly reduce to room temperature then.The 0.6%Nd:CaYAlO of Qu Chuing at last
4Crystal be maroon transparent, complete, do not ftracture.Behind hydrogen annealing, color becomes red-purple.
Embodiment 4.
Choose x=O.008, with Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3High pure raw material was according to 0.008: 0.992: 1: 2 take by weighing reagent respectively, thorough mixing is back briquetting on hydropress evenly, pack into then and put into retort furnace in the alumina crucible, under 1200 ℃, sinter polycrystal into, then the iraurite crucible is put in the taking-up of piece material and placed lifting furnace, adopt Czochralski grown crystal, it is the Nd:CaYAlO of [100] that seed crystal adopts through X-ray diffractometer accurate pointing normal line of butt end direction
4Single crystal rod.Take out rough vacuum and in high pure nitrogen atmosphere, adopt Czochralski grown crystal.Growth parameter(s) charges into oxygen after pulling crystal shown in embodiment in the table 14, slowly reduce to room temperature then.The 0.8%Nd:CaYAlO of Qu Chuing at last
4Crystal be maroon transparent, complete, do not ftracture.Behind hydrogen annealing, color becomes red-purple.
Embodiment 5.
Choose x=0.012, with Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3High pure raw material was according to 0.012: 0.988: 1: 2 take by weighing reagent respectively, thorough mixing is back briquetting on hydropress evenly, pack into then and put into retort furnace in the alumina crucible, under 1200 ℃, sinter polycrystal into, then the iraurite crucible is put in the taking-up of piece material and placed lifting furnace, adopt Czochralski grown crystal, it is the Nd:CaYAlO of [100] that seed crystal adopts through X-ray diffractometer accurate pointing normal line of butt end direction
4Single crystal rod.Take out rough vacuum and in high pure nitrogen atmosphere, adopt Czochralski grown crystal.Growth parameter(s) charges into oxygen after pulling crystal shown in embodiment in the table 15, slowly reduce to room temperature then.The 1.2%Nd:CaYAlO of Qu Chuing at last
4Crystal be maroon transparent, complete, do not ftracture.Behind hydrogen annealing, color becomes red-purple.
Table 1Nd:CaYAlO
4The crystal pulling growth parameter(s).
Claims (3)
1. the pulling growth method of the yttrium-calcium aluminate laser crystals of a neodymium-doped is characterized in that, this method comprises the following steps:
1. pulling growth Nd
x: CaY
1-xAlO
4The preparation of the raw material that crystal is used:
The molecular formula of the yttrium-calcium aluminate laser crystals of neodymium-doped is: (Nd
x: CaY
1-x)
2AlO
4, initial feed employing chemical reagent purity all is 99.999% Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3, raw material is by stoichiometric ratio x: (1-x): prepare burden at 1: 2, wherein x gets 0.004～0.012; Behind the occurrence of selected x, by described stoichiometric ratio difference weighing Nd
2O
3, Y
2O
3, Al
2O
3And CaCO
3, put into the mixed and careful grinding of mortar then, on hydropress, be pressed into tablet with the synthetic glass mould, adopt solid phase method at the synthetic Nd:CaYAlO of 1200 ℃ of following sintering of high temperature
4Polycrystalline piece material;
2. the iraurite crucible is put in described material taking-up and placed lifting furnace, adopt Czochralski grown Nd:CaYAlO
4Monocrystalline.
2. growth method according to claim 1, it is characterized in that, the concrete steps of described solid phase method agglomerate material are: tablet is packed in the alumina crucible, then crucible is put into retort furnace and be warming up to 1200 ℃ with 10 hours, behind the constant temperature 10 hours, be cooled to room temperature with 10 hours again and take out crucible, can obtain pulling growth Nd:CaYAlO
4Polycrystalline piece material.
3. growth method according to claim 1 is characterized in that, described Czochralski grown Nd:CaYAlO
4The concrete steps of monocrystalline are:
1. used iraurite crucible diameter is 70mm, highly is 3mm for 40mm, thickness; Described block of material put into the iraurite crucible and placed lifting furnace, vacuumize 1～10Pa after shove charge is intact, charge into 0.11～0.13MPa high pure nitrogen, adopt the Frequency Induction Heating iridium crucible, polycrystal raw material in the fusion crucible, and, make the complete homogenizing of melt in the crucible the scope constant temperature of 1860～1910 ℃ of the temperature that is higher than crystalline melting point 2 hours;
2. lifting rod lifts error and is lower than 1 μ m; Seed crystal is through the Nd:CaYAlO of X-ray diffractometer accurate pointing normal line of butt end direction for [100]
4Single crystal rod, in the crystal growing process, pull rate is 1～2mm/h, rotating speed is 5～10rpm;
3. the temperature of melt is reduced to the crystalline fusing point and locate to sow for 1810 ℃, promptly allow seed crystal contact with melt, constant temperature is after 1 hour, and adopting heats up slowly carries out lifting crystal growth, promptly so-called necking down stage; The diameter dimension for the treatment of growing crystal is during less than the seed crystal diameter, begins to adopt slowly that cooling process carries out the crystalline shouldering, when treating that the crystalline diameter dimension reaches predetermined size, and beginning constant temperature isodiametric growth; When isometrical crystal length reaches predetermined size, manually crystal is withdrawn from melt, promptly pull crystal;
4. charge into 0.002～0.003MPa oxygen after pulling crystal, slowly reduce to room temperature with the rate of temperature fall of 20～30 ℃/h;
5. with resulting crystal at H
2Anneal in the atmosphere, annealing process is to be warming up to 1000 ℃ with 10 hours, and constant temperature was cooled to room temperature with 10 hours after 6 hours again, and the crystal after the annealing becomes red-purple.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102051684A (en) * | 2011-01-14 | 2011-05-11 | 中国科学院上海光学精密机械研究所 | Method for growing thulium-holmium co-doped yttrium calcium aluminate laser crystal |
| CN102094237A (en) * | 2011-01-14 | 2011-06-15 | 中国科学院上海光学精密机械研究所 | Method for growing holmium-doped calcium yttrium aluminate laser crystal |
| CN102560661A (en) * | 2010-12-16 | 2012-07-11 | 中国科学院福建物质结构研究所 | Chromium and praseodymium co-doped erbium-activated calcium yttrium aluminate novel medium-wave infrared laser crystal |
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| CN115491765A (en) * | 2022-10-27 | 2022-12-20 | 江苏师范大学 | Thulium-doped calcium yttrium aluminate single crystal fiber with waveband of 2 microns and preparation method thereof |
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| CN102560661A (en) * | 2010-12-16 | 2012-07-11 | 中国科学院福建物质结构研究所 | Chromium and praseodymium co-doped erbium-activated calcium yttrium aluminate novel medium-wave infrared laser crystal |
| CN102051684A (en) * | 2011-01-14 | 2011-05-11 | 中国科学院上海光学精密机械研究所 | Method for growing thulium-holmium co-doped yttrium calcium aluminate laser crystal |
| CN102094237A (en) * | 2011-01-14 | 2011-06-15 | 中国科学院上海光学精密机械研究所 | Method for growing holmium-doped calcium yttrium aluminate laser crystal |
| CN103882522A (en) * | 2014-03-21 | 2014-06-25 | 中国科学院上海光学精密机械研究所 | Preparation method of ion-doped gadolinium calcium aluminate laser crystals |
| CN103882522B (en) * | 2014-03-21 | 2017-01-04 | 中国科学院上海光学精密机械研究所 | The preparation method of ion doping calcium aluminate gadolinium laser crystal |
| CN114280136A (en) * | 2021-12-28 | 2022-04-05 | 江西理工大学 | Preparation method of scheelite main trace element micro-area analysis quantitative correction standard substance |
| CN114892261A (en) * | 2022-04-08 | 2022-08-12 | 中国科学院上海光学精密机械研究所 | Trivalent chromium ion doped gadolinium yttrium scandium aluminum garnet laser crystal, preparation method and application thereof |
| CN115491765A (en) * | 2022-10-27 | 2022-12-20 | 江苏师范大学 | Thulium-doped calcium yttrium aluminate single crystal fiber with waveband of 2 microns and preparation method thereof |
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