Method for preparing high-damage-threshold laser window material

A high damage threshold and laser window technology, applied in the field of optical materials, can solve the problems of easy crystallization of fluoride glass, difficulty in large-scale production, low triple frequency damage threshold, etc., and achieve the effect of increasing damage threshold and improving load capacity

Active Publication Date: 2012-07-11
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Aiming at the current low triple-frequency damage threshold of quartz glass, while fluoride glass is easy to crystallize and difficult to produce in large sizes, the present invention proposes the preparation of a new type of high damage threshold laser window material with stable chemical properties and high damage threshold method

Method used

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  • Method for preparing high-damage-threshold laser window material
  • Method for preparing high-damage-threshold laser window material
  • Method for preparing high-damage-threshold laser window material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] According to the above recipe 1 # Calculate the weight percent of the glass from the molar composition in the glass, and then weigh 10Kg of raw materials and mix them evenly. Add the prepared powder into the crucible one by one, heat and melt through the electric melting furnace, the melting temperature is controlled at about 1200°C, the melting time is 24 hours, and the glass liquid is stirred during the melting process. After the molten glass is clarified, inject the molten glass into the preheated mold, and quickly put the glass into the muffle furnace that has been heated up. First, keep it warm at the transition temperature Tg of the glass for 2 hours, and then heat it at 10°C / hour. Anneal at a speed of 50°C, close the muffle furnace, cool down to room temperature, and finally take out the finished product.

[0034] Take 10 mg of the annealed sample, grind it into a very fine powder with an agate bowl, and conduct differential thermal analysis. T of the tested sa...

Embodiment 2

[0037] According to the above recipe 2 # Calculate the weight percent of the glass from the molar composition in the glass, and then weigh 10Kg of raw materials and mix them evenly. Add the prepared powder into the crucible one by one, heat and melt through the electric melting furnace, the melting temperature is controlled at about 1200°C, the melting time is 24 hours, and the glass liquid is stirred during the melting process. After the molten glass is clarified, inject the molten glass into the preheated mold, and quickly put the glass into the muffle furnace that has been heated up. First, keep it warm at the transition temperature Tg of the glass for 2 hours, and then heat it at 10°C / hour. Anneal at a speed of 50°C, close the muffle furnace, cool down to room temperature, and finally take out the finished product.

[0038] Take 10 mg of the annealed sample, grind it into a very fine powder with an agate bowl, and conduct differential thermal analysis. T of the tested sa...

Embodiment 3

[0041] According to the above recipe 3 #Calculate the weight percent of the glass from the molar composition in the glass, and then weigh 10Kg of raw materials and mix them evenly. Add the prepared powder into the crucible one by one, heat and melt through the electric melting furnace, the melting temperature is controlled at about 1200°C, the melting time is 24 hours, and the glass liquid is stirred during the melting process. After the molten glass is clarified, inject the molten glass into the preheated mold, and quickly put the glass into the muffle furnace that has been heated up. First, keep it warm at the transition temperature Tg of the glass for 2 hours, and then heat it at 10°C / hour. Anneal at a speed of 50°C, close the muffle furnace, cool down to room temperature, and finally take out the finished product.

[0042] Take 10 mg of the annealed sample, grind it into a very fine powder with an agate bowl, and conduct differential thermal analysis. T of the tested sam...

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Abstract

The invention provides a novel method for preparing a high-damage-threshold laser window material, which is stable in chemical properties and high in damage-threshold. The technical scheme is that novel large-size high-damage-threshold laser window glass is obtained through the fact that an oxide accessory ingredient capable of improving glass forming properties and materialization properties of the material is introduced in fluoride glass. The method solves the problem that the fluoride glass is easy in devitrification, poor in glass forming and difficult in large-size production. Simultaneously, the damage-threshold is obviously improved, and the method can be used in a high-energy laser for improving load capacity and has important functions on smooth advancement of inertial confinement fusion (ICF).

Description

technical field [0001] The invention belongs to the technical field of optical materials, and in particular relates to a preparation method of a high damage threshold laser window material. Background technique [0002] At present, the damage problem of optical components has become a bottleneck restricting the development of lasers to high energy and high repetition. God light device. In order to obtain high-energy photons, the terminal output of these lasers is frequency-tripled laser, and the total output power is as high as dozens of times the total power generated in the world. It is the largest optical project in history and is used in ICF (Inertial Confinement Fusion) as a driver. In these giant laser devices, the number of fused silica optical elements is close to 2,000, and the net diameter reaches 400mm×400mm, which are widely used in lenses, windows, gratings and debris protection plates in lasers. However, the surface of fused silica glass is severely damaged u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/062
Inventor 彭波陆敏侯超奇王鹏飞李玮楠韦玮高飞付丽丽
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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