Preparation method of trivalent ytterbium ion doped lutetium aluminum garnet transparent ceramic optical fiber

A technology of lutetium aluminum garnet and transparent ceramics, which is applied in the direction of inorganic raw materials such as artificial filaments, can solve the problems of low solid content of green body and residual pores of ceramics, and achieve the effects of low energy consumption, low cost and low optical loss

Active Publication Date: 2016-05-11
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this process also requires organic additives such as organic binders, resulting in low solid content of the green body and a large number of pores in the ceramics.

Method used

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  • Preparation method of trivalent ytterbium ion doped lutetium aluminum garnet transparent ceramic optical fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Weigh 10g of 0.1mol% Yb-doped yttrium aluminum garnet nanopowder, 0.1g of ammonium polyacrylate and 4g of triple distilled water respectively; measure 31.7 μL of tetraethyl orthosilicate; then Ball milling in the ball mill tank for 3 hours, the ball milling speed is 200rpm, and the ball milling medium is high-purity alumina balls;

[0026] (2) according to the step in the claims 1 2. making inner diameter is the gypsum microporous mold that 500 microns, long are 10 centimeters

[0027] (3) Slowly inject the water-based slurry obtained in step (1) into the above-mentioned plaster mold, demould after standing for 24 hours, and place the molded green body in an oven at 50° C. for 12 hours;

[0028] (4) Put the above-mentioned slip-casting and dried green body into a muffle furnace, and calcined at 800° C. for 3 hours;

[0029] (5) Place the calcined blank in a vacuum tungsten wire furnace, raise the temperature to 1000°C at 5°C / min, then raise the temperature to 1750°...

Embodiment 2

[0032] (1) Weigh 10 g of 5mol% (mole percent) Yb-doped yttrium aluminum garnet nanopowder, 0.15 g of ammonium polyacrylate and 4 g of triple distilled water; measure 31.7 μL of tetraethyl orthosilicate; Then ball milled for 3 hours in a polyurethane ball mill tank, the ball milling speed was 200rpm, and the ball milling medium was high-purity alumina balls;

[0033] (2) according to the step in the claims 1 2. making inner diameter is the gypsum microporous mold that 500 microns, long are 10 centimeters

[0034] (3) Slowly inject the water-based slurry obtained in step (1) into the above-mentioned plaster mold, demould after standing for 24 hours, and place the molded green body in an oven at 50° C. for 12 hours;

[0035] (4) Put the above-mentioned slip-casting and dried green body into a muffle furnace, and calcined at 800° C. for 3 hours;

[0036] (5) Place the calcined green body in a vacuum tungsten wire furnace, raise the temperature to 1000°C at 5°C / min, then raise the...

Embodiment 3

[0039] (1) Weigh 10g of 10mol% (mole percent) Yb-doped yttrium aluminum garnet nanopowder, 0.1g of ammonium polyacrylate and 7g of triple distilled water; measure 31.7 μL of tetraethyl orthosilicate; Then ball milled for 3 hours in a polyurethane ball mill tank, the ball milling speed was 200rpm, and the ball milling medium was high-purity alumina balls;

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Abstract

The invention provides a preparation method of trivalent ytterbium ion doped lutetium-aluminum garnet transparent ceramic optical fibers. The method comprises the following steps: (1) carrying out ball milling on ytterbium doped yttrium-aluminum garnet powder prepared by coprecipitation, a sintering auxiliary agent, a surfactant and triple distilled water, and mixing to prepare water-based slurry; (2) preparing a gypsum micro-hole mold; (3) injecting the water-based slurry into the gypsum micro-hole mold, de-molding and drying to obtain a ceramic green body; (4) carrying out calcining treatment on the ceramic green body to obtain calcined fibers; (5) carrying out vacuum sintering on the calcined fibers; and (6) finally, annealing to obtain the Yb<3+> doped transparent lutetium-aluminum garnet transparent ceramic optical fibers. The transparent ceramic optical fibers prepared by adopting the preparation method have the relatively low optical loss and can be used for -1 micron near-infrared laser output and -1 micron near-infrared optical signal amplification. In the method, a slurry injection molding process is adopted; and compared with the prior art, for the method, the steps are simple and the cost is relatively low. A powder calcining process is adopted, the working temperature is relatively low and the energy loss is relatively small.

Description

technical field [0001] The invention relates to a transparent ceramic optical fiber, in particular to a trivalent ytterbium ion doped lutetium aluminum garnet (Yb 3+ :LuAG) preparation method of transparent ceramic optical fiber. Background technique [0002] Fiber gain media is the perfect solution for the development of solid-state lasers towards smaller size, lighter weight, higher efficiency and more reliability. At present, the more mature optical fiber gain matrix is ​​silica optical fiber, and its output power has exceeded 3kW at present. However, for higher power applications, silica fibers are not up to the task due to the low thermal conductivity of silica. Doped yttrium aluminum garnet is an excellent laser gain matrix material. Compared with the thermal conductivity of quartz glass of 1.37W / mK, its thermal conductivity is as high as ~11W / mK. A single doped fiber YAG can produce and higher power without distortion of beam quality or damage to gain material due ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D01F9/08C04B35/44C04B35/50C04B35/622
Inventor 范金太张龙姜本学毛小建
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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