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Preparation method and testing method of aluminum fluoride 2.9 [mu]m high-power optical fiber laser

A fiber laser and testing method technology, applied in testing fiber/optical waveguide equipment, optical instrument testing, machine/structural component testing, etc. Effects of Balanced, Low Pump Threshold, High Laser Slope Efficiency

Inactive Publication Date: 2021-01-26
苏州凯文堡尼光电科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The preparation and testing method of a 2.9 μm aluminum fluoride high-power fiber laser proposed by the present invention solves the existing problem that high-power fiber laser and mechanical properties cannot be well balanced

Method used

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  • Preparation method and testing method of aluminum fluoride 2.9 [mu]m high-power optical fiber laser
  • Preparation method and testing method of aluminum fluoride 2.9 [mu]m high-power optical fiber laser
  • Preparation method and testing method of aluminum fluoride 2.9 [mu]m high-power optical fiber laser

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Experimental program
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Effect test

Embodiment 1

[0039] The dried AlF 3 、BaF 2 , YF 3 , PbF 2 , MgF 2 Put it into the ultrafine grinder with a molar ratio of 30, 15, 20, 25, 10, and add compounds with Pr and Ho elements at the same time, so that the concentrations of Pr and Ho elements are 2000ppm and 20000ppm respectively, and then the mixture Mix and grind for 20 minutes, then put the ground raw materials into a high-temperature dried platinum crucible, and use the melting method to burn in a glove box electric furnace. The temperature of the glove box electric furnace is maintained at 930°C for 2 hours, and the firing is complete. The liquid is poured and annealed in a mold at 380°C until it is cooled to room temperature to prepare a preform, and then use an automatic polishing machine to polish the surface of the prepared preform to a chemical level, and then use 99% alcohol to decontaminate the surface , the decontaminated preform is installed on the drawing tower, and drawn into an optical fiber in a nitrogen envir...

Embodiment 2

[0040] Embodiment 2: the dried AlF 3 、BaF 2 , YF 3 , PbF 2 , MgF 2Put it into the ultrafine grinder with a molar ratio of 38, 10, 20, 24, 8, and add compounds with Pr and Ho elements at the same time, so that the concentrations of Pr and Ho elements are 3000ppm and 30000ppm respectively, and then the mixture Mix and grind for 40 minutes, then put the ground raw materials into a high-temperature dried platinum crucible, and burn them in a glove box electric furnace using the melting method. The temperature of the glove box electric furnace is maintained at 1000°C for 3 hours, and the firing is complete. The liquid is poured and annealed in a mold at 450°C until it is cooled to room temperature to prepare a preform, and then the surface of the prepared preform is polished to a chemical level by an automatic polishing machine, and then 99% alcohol is used to decontaminate the surface , the decontaminated preform is installed on the drawing tower, and drawn into an optical fib...

Embodiment 3

[0042] The dried AlF 3 、BaF 2 , YF 3 , PbF 2 , MgF 2 Put it into the ultrafine grinder with a molar ratio of 25, 20, 20, 30, 5, and add compounds with Pr and Ho elements at the same time, so that the concentrations of Pr and Ho elements are 1000ppm and 10000ppm respectively, and then the mixture Mix and grind for 10 minutes, then put the ground raw materials into a platinum crucible that has been dried at high temperature, and burn them in a glove box electric furnace using the melting method. The temperature of the glove box electric furnace is maintained at 850°C for 1 hour, and the firing is complete. The liquid is poured and annealed in a mold at 300°C until it is cooled to room temperature to prepare a preform, then use an automatic polishing machine to polish the surface of the prepared preform to a chemical level, and then use 80% alcohol to decontaminate the surface , the decontaminated preform is installed on the wire drawing tower, and drawn into an optical fiber...

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Abstract

The invention discloses a preparation method and a test method of aluminum fluoride 2.9 [mu]m high-power fiber laser, relates to the technical field of fiber lasers, and provides the following schemeaiming at the existing realization of different functions and problems. According to the technical scheme, the preparation method comprises the following steps: S1, putting dried raw materials into anultrafine grinding machine, and mixing and grinding; S2, putting the raw materials ground in the step S1 into a platinum crucible which is dried at high temperature, and firing in a glove box electric furnace by utilizing a melting method; and S3, pouring the liquid fired in the step S2 into a mold for annealing until the liquid is cooled to the room temperature to prepare the preform rod. According to the invention, high-power laser emission of the aluminum fluoride optical fiber at 2.9 [mu]m is achieved while relatively high laser slope efficiency and relatively low pumping threshold are obtained; and laser communication and sensing of a middle-infrared band in the future are better facilitated, high-power optical fiber laser and mechanical performance are well balanced, and different functions are achieved.

Description

technical field [0001] The invention relates to the technical field of fiber lasers, in particular to a method for preparing and testing aluminum fluoride 2.9 μm high-power fiber lasers. Background technique [0002] Mid-infrared fiber lasers are receiving more and more attention due to their important application values ​​such as defense industry, medical equipment, and chemical detection. At present, the glass materials dedicated to the transmission and laser generation in the mid-infrared band mainly focus on tellurite glass, chalcogenide glass and fluoride glass. Tellurite glass has good fiber-forming performance and strong anti-devitrification ability, but its phonon energy is high, and high phonon energy will inevitably increase the non-radiative relaxation rate of multi-phonon between energy levels, reducing the luminescent ion. Radiation quantum efficiency limits the generation and transmission of laser light in the mid-infrared field; chalcogenide glass has low pho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/04C03B37/012C03B37/025G01M11/00G01M11/02
CPCC03C13/042C03B37/01268C03B37/025G01M11/33G01M11/02C03B2201/82C03B2201/34
Inventor 王鹏飞张集权
Owner 苏州凯文堡尼光电科技有限公司
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