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Rare earth ion-doped PTR (Photo-Thermo-Refractive) laser glass ceramic and preparation method thereof

A technology of laser glass and rare earth ions, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of complex process, low thermal conductivity, poor thermal shock resistance, etc., and achieve the effect of simplifying the preparation process

Active Publication Date: 2018-12-21
XI'AN 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

Among them, single crystal has high thermal conductivity and high gain, but low doping concentration, high preparation cost and complicated process; while glass has simple preparation process, low cost, wide fluorescence spectrum, high doping concentration, and can be made into large sizes, etc. Advantages, but low thermal conductivity and poor thermal shock resistance

Method used

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  • Rare earth ion-doped PTR (Photo-Thermo-Refractive) laser glass ceramic and preparation method thereof
  • Rare earth ion-doped PTR (Photo-Thermo-Refractive) laser glass ceramic and preparation method thereof
  • Rare earth ion-doped PTR (Photo-Thermo-Refractive) laser glass ceramic and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A preparation method of rare earth ion-doped photothermographic laser glass ceramics, the specific steps are:

[0054] (1) According to the above formula 1 # Calculate the weight percentage of the glass from the molar composition in the glass, then weigh a total of 25kg of raw materials, and mix them uniformly in the mixing box.

[0055] (2) Add the prepared powder into an 11-liter platinum crucible in turn, heat and melt through a silicon carbide electric furnace, control the melting temperature at about 1250°C, and the melting time is 6 hours. During the melting process, use platinum leaf slurry to stir The device stirs the molten glass;

[0056] (3) After the cloudy glass liquid in step (2) eliminates bubbles and is fully stirred evenly, the glass cloudy liquid is melted, clarified, and homogenized by an optical glass melting method to form molten glass, and the melting temperature is 1420° C.; It is injected into a copper mold that has been preheated to 500°C to f...

Embodiment 2

[0063] The difference from Embodiment 1 is that the writing optical power of the ultrashort pulse laser in step (6) is 200 mW. The SEM of the laser glass ceramics that the present embodiment makes is as figure 2 shown.

Embodiment 3

[0065] The difference from Embodiment 1 is that the writing optical power of the ultrashort pulse laser in step (6) is 300 mW. The SEM of the laser glass ceramics that the present embodiment makes is as image 3 shown.

[0066] right Figure 1~3 Statistical calculation of the size of the inner nanocrystalline particles shows that the average size of the nanoparticles is 175±50nm. It can be seen that the size of the nanoparticles has nothing to do with the writing optical power, but the density distribution of the nanocrystalline particles is related to the light focused in the PTR glass. The power density distribution is closely related. When the writing power of the ultrashort pulse laser was increased from 100mW to 200mW, the distribution area of ​​nanocrystalline particles became wider and the density of nanocrystalline particles increased; when the writing power increased to 300mW, serious clustering of nanocrystalline particles occurred Phenomena eventually cluster int...

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Abstract

The invention relates to the technical field of lasers, in particular to a rare earth ion-doped PTR (Photo-Thermo-Refractive) laser glass ceramic and a preparation method thereof, for achieving function extension of PTR glass. The laser glass ceramic is prepared by adding rare earth oxides into the PTR glass, main components of the rare earth oxides are SiO2, Na2O, Al2O3, ZnO, La2O3, NaF, KBr, andthe like. The preparation method comprises: dosing and mixing, high temperature melting, stirring and clarifying, homogenizing, casting and molding; annealing of molded glass, and heat treatment after exposing by means of ultrashort pulse laser, so as to obtain a laser glass ceramic sample. The rare earth ion-doped PTR glass is exposed by adopting the ultrashort pulse laser, and structure modification can be selectively performed on the space of the glass, so as to achieve the function extension of the PTR glass; a 'two-step method' heat treatment is not required after exposing, and heat treatment is only required at a crystallization temperature, so that a preparation process is greatly simplified, and nanocrystal particles that can be directly detected can be obtained.

Description

technical field [0001] The invention relates to a laser glass ceramic and a preparation method thereof, in particular to a rare earth ion-doped photothermal-sensitive refraction laser glass ceramic and a preparation method thereof. Background technique [0002] Photothermographic glass refers to the addition of some additives sensitive to ultraviolet light and temperature inside the glass with silicate as the main body, so that the glass will appear photosensitive images after ultraviolet exposure and heat treatment. [0003] As early as 1947, Corning Corporation of the United States published a report on the successful preparation of photosensitive glass for the first time. Then in 1950, the company reported the research on preparing photosensitively opacifiable glass by doping halogen elements in silicate glass. The main composition system of the photo-opacifying glass is SiO 2 -Na 2 O-Li 2 O-Al 2 o 3 -ZnO-CeO 2 -Ag-F, which is completely transparent when it is just...

Claims

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Application Information

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IPC IPC(8): C03C10/00C03C23/00C03B19/02
CPCC03B19/02C03C10/0009C03C23/0025
Inventor 程光华李伟楠张云婕王旭
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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