CN116253512B - Germanate glass capable of inhibiting darkening of gamma ray irradiation and preparation method thereof - Google Patents
Germanate glass capable of inhibiting darkening of gamma ray irradiation and preparation method thereof Download PDFInfo
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- CN116253512B CN116253512B CN202210988418.2A CN202210988418A CN116253512B CN 116253512 B CN116253512 B CN 116253512B CN 202210988418 A CN202210988418 A CN 202210988418A CN 116253512 B CN116253512 B CN 116253512B
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- 239000011521 glass Substances 0.000 title claims abstract description 130
- 230000005251 gamma ray Effects 0.000 title claims abstract description 34
- 230000002401 inhibitory effect Effects 0.000 title claims abstract description 19
- 238000002360 preparation method Methods 0.000 title abstract description 7
- MMKQUGHLEMYQSG-UHFFFAOYSA-N oxygen(2-);praseodymium(3+) Chemical compound [O-2].[O-2].[O-2].[Pr+3].[Pr+3] MMKQUGHLEMYQSG-UHFFFAOYSA-N 0.000 claims abstract description 24
- 229910003447 praseodymium oxide Inorganic materials 0.000 claims abstract description 24
- 239000013307 optical fiber Substances 0.000 claims abstract description 17
- 238000000137 annealing Methods 0.000 claims abstract description 12
- 238000002844 melting Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 238000002156 mixing Methods 0.000 claims abstract description 7
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 claims abstract description 4
- 229910005793 GeO 2 Inorganic materials 0.000 claims abstract description 4
- 238000012545 processing Methods 0.000 claims abstract description 3
- 238000005266 casting Methods 0.000 claims abstract 3
- 239000000156 glass melt Substances 0.000 claims abstract 3
- 238000010438 heat treatment Methods 0.000 claims abstract 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract 2
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract 2
- 239000010935 stainless steel Substances 0.000 claims abstract 2
- 238000003756 stirring Methods 0.000 claims abstract 2
- 239000000203 mixture Substances 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 11
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 8
- 238000005303 weighing Methods 0.000 claims description 6
- 150000002910 rare earth metals Chemical group 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 3
- 238000004020 luminiscence type Methods 0.000 claims description 3
- 239000000843 powder Substances 0.000 claims 3
- 230000005855 radiation Effects 0.000 claims 3
- 239000000155 melt Substances 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 6
- 239000003574 free electron Substances 0.000 abstract description 5
- 239000011159 matrix material Substances 0.000 abstract description 2
- 239000007788 liquid Substances 0.000 description 18
- 238000001816 cooling Methods 0.000 description 12
- 230000031700 light absorption Effects 0.000 description 12
- 238000010521 absorption reaction Methods 0.000 description 10
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 10
- 239000006060 molten glass Substances 0.000 description 10
- 239000011152 fibreglass Substances 0.000 description 6
- 229910052777 Praseodymium Inorganic materials 0.000 description 5
- 238000000862 absorption spectrum Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 230000009477 glass transition Effects 0.000 description 5
- 238000004321 preservation Methods 0.000 description 5
- -1 rare earth ions Chemical class 0.000 description 5
- 230000007847 structural defect Effects 0.000 description 5
- 229910052689 Holmium Inorganic materials 0.000 description 4
- 229910052775 Thulium Inorganic materials 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 4
- 230000007547 defect Effects 0.000 description 3
- 238000002834 transmittance Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 238000004847 absorption spectroscopy Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- WCWKKSOQLQEJTE-UHFFFAOYSA-N praseodymium(3+) Chemical compound [Pr+3] WCWKKSOQLQEJTE-UHFFFAOYSA-N 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/048—Silica-free oxide glass compositions
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01265—Manufacture of preforms for drawing fibres or filaments starting entirely or partially from molten glass, e.g. by dipping a preform in a melt
- C03B37/01268—Manufacture of preforms for drawing fibres or filaments starting entirely or partially from molten glass, e.g. by dipping a preform in a melt by casting
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Abstract
The application discloses a germanate glass for inhibiting darkening of gamma ray irradiation and a preparation method thereof, which provides a key germanate glass matrix material for an optical fiber laser with a wave band of 2 mu m in a severe environment with gamma ray irradiation, wherein the components comprise BaO-Ga 2 O 3 ‑GeO 2 Pr is added as a basic component in a certain proportion 6 O 11 、Tm 2 O 3 、Ho 2 O 3 Or mixing and introducing, heating and melting in a high-temperature electric furnace, removing hydroxyl groups from glass melt, stirring, clarifying, casting on a stainless steel mold, precisely annealing to obtain germanate glass capable of inhibiting darkening caused by gamma ray irradiation, reducing free electrons and holes by adding praseodymium oxide proportional combination components into the germanate glass, reducing the fracture of chemical bonds, improving the darkening capability of the germanate glass caused by gamma ray irradiation, preparing an optical fiber preform by adopting mechanical cold processing, and then thermally drawing to obtain the optical fiber, wherein the optical fiber can be applied to 2 mu m-band laser.
Description
Technical Field
The application belongs to the field of glass optical fibers, and particularly relates to a glass optical fiber for inhibiting gamma ray irradiation and a preparation method thereof.
Background
The 2 mu m-band optical fiber laser has wide application in the fields of laser communication, laser radar, laser spectrum, laser medical treatment, middle and far infrared laser generation and the like. The most common laser gain medium of 2 mu m wave band laser is doped with rare earth ions in quartz glass optical fibers, but the quartz glass has lower rare earth doping concentration, which limits the output power and performance of the 2 mu m wave band laser. In recent years, more and more students at home and abroad turn the eyes to the multicomponent germanate glass optical fiber with high rare earth solubility. Germanate glass is an ideal gain material for 2 μm band fiber lasers due to its moderate phonon energy, high rare earth ion solubility, high threshold against laser damage, and excellent chemical and mechanical properties, and has found important applications.
However, when 2 μm-band fiber lasers are used in satellite applications (satellite applications) or other harsh environments with high-energy particle-beam irradiation, particularly when gamma-ray irradiation is performed with BaO-Ga 2 O 3 -GeO 2 When germanate glass is an essential component, free electrons and holes, even chemical bonds, are generated, and this can lead to the generation of defects in the glass structure, which can lead to the reduction of the transmittance of the germanate glass, and the generation of 'darkening', i.e. stronger irradiation of high-energy particles can lead to the gradual reduction of the transmittance of the glass fiber in the laser, which phenomenon is also called the 'darkening effect' of the fiber. Darkening of the fiber can lead to laser failure, severely affecting the stability and lifetime of the laser device.
The glass adopts thulium or holmium ions in the 2 μm wave band for luminescence, which is well known in the industry, and praseodymium ions doped in the glass are adopted, so that the conventional application is also to endow the glass with luminous capability.
According to the application, a certain amount of praseodymium ion oxide is introduced in the processing of the germanate glass component, so that the capacity of inhibiting gamma ray irradiation darkening of the germanate glass optical fiber can be effectively improved, unlike the conventional application of praseodymium.
Disclosure of Invention
The application aims to provide germanate glass for inhibiting darkening of gamma ray irradiation and a preparation method thereof, and provides a key germanate glass matrix material for a fiber laser with a wave band of 2 mu m, which can be applied to a severe environment with gamma ray irradiation.
When gamma rays are irradiated with BaO-Ga 2 O 3 -GeO 2 When germanate glass is an essential component, free electrons and holes, even chemical bonds, are generated, and the defects of the glass structure are generated, so that the transmittance of the germanate glass is reduced, and darkening is generated; rare earth ions with a certain proportion are doped in the germanate glass, so that the generation of structural defects of the glass caused by gamma ray irradiation can be inhibited, and the absorption loss can be reduced. The germanate glass is used for preparing the laser, can improve the darkening inhibiting capability of the laser when being irradiated by gamma rays,and then the stability and the service life of the laser are improved.
The aim of the application is achieved by the following technical scheme:
a germanate glass for inhibiting darkening by gamma ray irradiation comprising the following components:
wherein R is 2 O 3 Is an oxide containing at least one rare earth luminescent ion for 2 μm band luminescence, comprising doping Tm in glass 2 O 3 And/or Ho 2 O 3 。
The preparation method of the germanate glass for inhibiting darkening of gamma ray irradiation comprises the following steps:
grinding the raw material oxide, melting into glass liquid, clarifying the glass liquid, transferring the glass liquid onto a glass fiber reinforced plastic plate, cooling and molding, and then annealing to obtain the germanate glass inhibiting darkening of gamma ray irradiation.
Preferably, the grinding time is 10-30min.
Preferably, the melting temperature is 1300-1500 ℃.
Preferably, the melting time is 1 to 3 hours.
Preferably, the annealing is performed in an annealing furnace.
Further preferably, the annealing specifically includes: preserving heat for 1-3 h at 570-670 ℃ and then cooling to room temperature along with an annealing furnace.
Compared with the prior art, the application has the following remarkable beneficial effects:
(1) The germanate glass doped with a certain proportion of praseodymium oxide prepared by the specific proportion component and the method of the application reduces free electrons and holes by adding praseodymium oxide into the germanate glass and combining other components in proportion, namely reduces the breakage of chemical bonds, so as to improve the photodarkening capability of the germanate glass for inhibiting gamma ray irradiation, and compared with the germanate glass which is not doped, the germanate glass has better photodarkening capability for inhibiting gamma ray irradiation, and meanwhile, an optical fiber preform is prepared by adopting mechanical cold working, and then the optical fiber can be prepared into a laser gain medium which can be applied to 2 mu m wave band laser by hot drawing;
(2) The praseodymium oxide doped germanate glass and the optical fiber prepared by using the glass can be used in a severe environment with 2 mu m wave band laser and gamma ray irradiation.
Drawings
FIG. 1 is an absorption spectrum of praseodymium oxide doped germanate glass and praseodymium oxide free doped germanate glass;
Detailed Description
Specific examples of the present application are further described below with reference to examples, but the practice and protection of the present application are not limited thereto. It should be noted that the following processes, if not specifically described in detail, can be realized or understood by those skilled in the art with reference to the prior art. The reagents or apparatus used were not manufacturer-specific and were considered conventional products commercially available.
Comparative example
Preparation of undoped praseodymium oxide germanate glass
The oxide composition of the undoped praseodymium germanate glass is as follows:
and weighing each oxide (with purity more than or equal to 99.99%) according to a formula, fully and uniformly mixing to form a mixture, transferring the mixture into an alumina crucible, placing the alumina crucible in a high-temperature pit furnace at 1400 ℃ for melting for 2 hours to obtain molten glass liquid, pouring the molten glass liquid on a glass fiber reinforced plastic plate for cooling and forming after the glass liquid is clarified, then placing the glass into an annealing furnace which is heated to be slightly lower than the glass transition temperature of the glass, and cooling to room temperature along with the furnace after heat preservation for 2 hours at 620 ℃.
The annealed samples were processed into glass sheets of 20 mm. Times.20 mm. Times.2 mm and polished on both sides, and after polishing, were subjected to 50KGy dose gamma-ray irradiation, followed by absorption spectroscopy and EPR testing, as shown in FIG. 1. Undoped germanate glass exhibits significant absorption loss after irradiation and color center defects.
Example 1
By doping Pr in germanate glass 6 O 11
The praseodymium oxide doped germanate glass of the embodiment comprises the following components in parts by weight:
and weighing each oxide (with purity more than or equal to 99.99%) according to a formula, fully and uniformly mixing to form a mixture, transferring the mixture into an alumina crucible, placing the alumina crucible in a high-temperature pit furnace at 1400 ℃ for melting for 2 hours to obtain molten glass liquid, pouring the molten glass liquid on a glass fiber reinforced plastic plate for cooling and forming after the glass liquid is clarified, then placing the glass into an annealing furnace which is heated to be slightly lower than the glass transition temperature of the glass, and cooling to room temperature along with the furnace after heat preservation for 2 hours at 620 ℃.
The annealed samples were processed into glass sheets of 20mm x 2mm and polished on both sides, and after polishing, were subjected to gamma-ray irradiation at a dose of 50KGy, and then subjected to glass light absorption measurement to obtain absorption spectra of glass, as shown in fig. 1. In FIG. 1, the praseodymium oxide undoped germanate glass exhibits a significant absorption loss after irradiation, for example, at 400nm, and has a light absorption coefficient of 0.260mm -1 The method comprises the steps of carrying out a first treatment on the surface of the Whereas germanate glass doped with praseodymium oxide of 0.5mol% has significantly less absorption loss after irradiation than undoped germanate glass, and has a light absorption coefficient of only 0.046mm at 400nm -1 It is shown that doping of praseodymium oxide into the glass can reduce structural defects induced in the germanate glass by gamma ray irradiation, thereby increasing the light transmission capacity of the germanate glass.
Example 2
By doping Pr in germanate glass 6 O 11
The praseodymium oxide doped germanate glass of the embodiment comprises the following components in parts by weight:
and weighing each oxide (with purity more than or equal to 99.99%) according to a formula, fully and uniformly mixing to form a mixture, transferring the mixture into an alumina crucible, placing the alumina crucible in a high-temperature pit furnace at 1400 ℃ for melting for 2 hours to obtain molten glass liquid, pouring the molten glass liquid on a glass fiber reinforced plastic plate for cooling and forming after the glass liquid is clarified, then placing the glass into an annealing furnace which is heated to be slightly lower than the glass transition temperature of the glass, and cooling to room temperature along with the furnace after heat preservation for 2 hours at 620 ℃.
The annealed samples were processed into glass sheets of 20mm x 2mm and polished on both sides, and after polishing, were subjected to gamma-ray irradiation at a dose of 50KGy, and then subjected to glass light absorption measurement to obtain absorption spectra of glass, as shown in fig. 1. In FIG. 1, the praseodymium oxide undoped germanate glass exhibits a significant absorption loss after irradiation, for example, at 400nm, and has a light absorption coefficient of 0.260mm -1 The method comprises the steps of carrying out a first treatment on the surface of the But the absorption loss of the germanate glass doped with praseodymium oxide of 1.0mol percent after irradiation is obviously smaller than that of undoped germanate glass, and the light absorption coefficient at 400nm is only 0.050mm -1 . The doping of praseodymium oxide in the glass is shown to reduce structural defects induced in the germanate glass by gamma ray irradiation, thereby increasing the light transmission capacity of the germanate glass.
Example 3
By doping Pr in germanate glass 6 O 11
The praseodymium oxide doped germanate glass of the embodiment comprises the following components in parts by weight:
and weighing each oxide (with purity more than or equal to 99.99%) according to a formula, fully and uniformly mixing to form a mixture, transferring the mixture into an alumina crucible, placing the alumina crucible in a high-temperature pit furnace at 1400 ℃ for melting for 2 hours to obtain molten glass liquid, pouring the molten glass liquid on a glass fiber reinforced plastic plate for cooling and forming after the glass liquid is clarified, then placing the glass into an annealing furnace which is heated to be slightly lower than the glass transition temperature of the glass, and cooling to room temperature along with the furnace after heat preservation for 2 hours at 620 ℃.
The annealed samples were processed into glass sheets of 20mm x 2mm and polished on both sides, and after polishing, were subjected to gamma-ray irradiation at a dose of 50KGy, and then subjected to glass light absorption measurement to obtain absorption spectra of glass, as shown in fig. 1. In FIG. 1, the praseodymium oxide undoped germanate glass exhibits a significant absorption loss after irradiation, for example, at 400nm, and has a light absorption coefficient of 0.260mm -1 The method comprises the steps of carrying out a first treatment on the surface of the But the absorption loss of the germanate glass doped with praseodymium oxide of 1.5mol percent after irradiation is obviously smaller than that of undoped germanate glass, and the light absorption coefficient at 400nm is only 0.062mm -1 . The doping of praseodymium oxide in the glass is shown to reduce structural defects induced in the germanate glass by gamma ray irradiation, thereby increasing the light transmission capacity of the germanate glass.
Example 4
By doping Pr in germanate glass 6 O 11
The praseodymium oxide doped germanate glass of the embodiment comprises the following components in parts by weight:
and weighing each oxide (with purity more than or equal to 99.99%) according to a formula, fully and uniformly mixing to form a mixture, transferring the mixture into an alumina crucible, placing the alumina crucible in a high-temperature pit furnace at 1400 ℃ for melting for 2 hours to obtain molten glass liquid, pouring the molten glass liquid on a glass fiber reinforced plastic plate for cooling and forming after the glass liquid is clarified, then placing the glass into an annealing furnace which is heated to be slightly lower than the glass transition temperature of the glass, and cooling to room temperature along with the furnace after heat preservation for 2 hours at 620 ℃.
The annealed samples were processed into glass sheets of 20mm by 2mm and polished on both sides for 50KGy dose of gammaAnd (3) horse ray irradiation and glass light absorption measurement are carried out to obtain the absorption spectrum of the glass, as shown in figure 1. In FIG. 1, the praseodymium oxide undoped germanate glass exhibits a significant absorption loss after irradiation, for example, at 400nm, and has a light absorption coefficient of 0.260mm -1 The method comprises the steps of carrying out a first treatment on the surface of the Whereas germanate glass doped with praseodymium oxide of 2mol% has significantly less absorption loss after irradiation than undoped germanate glass, and has a light absorption coefficient of only 0.050mm at 400nm -1 The method comprises the steps of carrying out a first treatment on the surface of the The doping of praseodymium oxide in the glass is shown to reduce structural defects induced in the germanate glass by gamma ray irradiation, thereby increasing the light transmission capacity of the germanate glass.
Thulium or holmium (namely Tm or Ho) or a mixture of the thulium and holmium is adopted in glass for emitting light (in a 2-micron wave band), which is well known in the industry, and the application refers to the method for ensuring that the material is put into high-temperature smelting to achieve the structural locking of the germanate glass formed by a laser gain medium, and further ensuring that free electrons and holes are reduced and the breakage of chemical bonds is reduced, so that the formed germanate glass can inhibit photodarkening caused by gamma ray irradiation; praseodymium (Pr) can emit light, but the effect of praseodymium combined with other components in the application is to inhibit darkening caused by gamma ray irradiation, and is designed for darkening of germanate glass.
Claims (6)
1. A germanate glass capable of inhibiting darkening of gamma ray irradiation comprises the following components in parts by weight:
BaO 10~20 mol%，
Ga 2 O 3 10~20 mol%，
Pr 6 O 11 0.5~2 mol%，
GeO 2 60~80 mol%
R 2 O 3 1~5 mol%，
the sum of the contents of the components is 100%, wherein R is 2 O 3 Is an oxide containing at least one rare earth luminescent ion for 2 [ mu ] m band luminescence.
2. According to claimA germanate glass for inhibiting darkening by gamma ray radiation as defined in claim 1 wherein: the glass contains the oxide of rare earth luminescent ions emitting light in a 2 [ mu ] m wave band, and also comprises the following steps of doping Tm in the glass 2 O 3 Or Ho 2 O 3， Or a mixture of both.
3. A method for preparing a germanate glass capable of inhibiting darkening by gamma ray irradiation according to claim 1 or 2, which is prepared by a melt casting method, comprising the following steps:
the glass is prepared through the steps of selecting glass composition proportion, weighing the components according to the proportion, grinding the components to powder respectively, mixing the powder uniformly in a crucible, heating the powder in a high-temperature electric furnace to 1300-1500 ℃ for melting, removing hydroxyl groups from glass melt, stirring, clarifying, casting the glass melt on a stainless steel mold, and precisely annealing to obtain the germanate glass capable of inhibiting gamma ray irradiation darkening.
4. Use of a germanate glass as defined in claim 1 to inhibit darkening by gamma radiation, wherein: the germanate glass is processed and prepared into a glass optical fiber, and a laser gain medium used for 2 mu m-band laser is formed.
5. The use of a germanate glass as defined in claim 4 for inhibiting darkening by gamma radiation, wherein: the glass is processed to prepare the glass optical fiber, and the glass optical fiber preform is prepared by mechanical cold processing, and then is thermally drawn to prepare the germanate glass optical fiber.
6. A method for inhibiting gamma ray irradiation darkening of germanate glass by using the glass as claimed in claim 1, wherein the improvement of the ability of germanate glass to inhibit the darkening caused by gamma ray irradiation is achieved by controlling the proportion of praseodymium oxide added to the germanate glass.
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| CN202210988418.2A CN116253512B (en) | 2022-08-17 | 2022-08-17 | Germanate glass capable of inhibiting darkening of gamma ray irradiation and preparation method thereof |
| CN202310172954.XA CN116375347A (en) | 2022-08-17 | 2022-08-17 | Preparation method of germanate glass optical fiber |
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| US5305414A (en) * | 1992-08-03 | 1994-04-19 | The United States Of America As Represented By The Secretary Of The Navy | Low loss glass and optical fibers therefrom |
| CN101414025A (en) * | 2008-11-28 | 2009-04-22 | 华南理工大学 | Germanate glass optical fiber with emission wavelength of 1.5-2.2 mu m |
| CN101486530A (en) * | 2009-02-27 | 2009-07-22 | 中国科学院上海光学精密机械研究所 | 2 mu m luminous rare earth ion doped germanate laser glass and preparation thereof |
| CN102211873A (en) * | 2011-03-23 | 2011-10-12 | 中国科学院上海光学精密机械研究所 | 3mu m luminous rare-earth ion-doped fluogermanate laser glass and preparation method thereof |
| CN109180010A (en) * | 2018-08-30 | 2019-01-11 | 华南理工大学 | A kind of Tm of high-gain3+/Ho3+It is co-doped with multicomponent germanate glass single mode optical fiber and preparation method thereof |
| CN110927866A (en) * | 2019-12-17 | 2020-03-27 | 华南理工大学 | High-gain rare earth doped germanate glass core composite glass optical fiber and device |
| CN113387562A (en) * | 2020-03-13 | 2021-09-14 | 包头稀土研究院 | Rare earth doped red fluorescent glass material and preparation process thereof |
| CN113387567A (en) * | 2020-03-13 | 2021-09-14 | 包头稀土研究院 | Red fluorescent glass and preparation method thereof |
| CN112876068A (en) * | 2021-03-26 | 2021-06-01 | 华南理工大学 | Gamma-ray irradiation darkening resistant germanate glass and preparation method and application thereof |
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| CN116375347A (en) | 2023-07-04 |
| CN116253512A (en) | 2023-06-13 |
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