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Application of glass-ceramic material

A glass-ceramic and micro-crystal technology, which is applied in the application field of glass-ceramic materials, can solve the problems of poor laser protection performance of glass materials, limited application scope, and difficulty in obtaining large inorganic single crystals, and achieves good optical limiting effect. , high chemical stability and thermal stability, excellent optical clipping ability

Inactive Publication Date: 2019-02-15
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are certain problems in the above-mentioned types of optical limiting materials at present, such as the difficulty in obtaining large inorganic single crystals, which limits their application range; the dispersion system with nanoparticles dispersed, its physical and chemical stability, and work stability have yet to be solved. increased; in addition, glass materials have poor laser protection properties

Method used

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  • Application of glass-ceramic material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] BaTiO 3 Optical limiting glass-ceramics

[0036] The BaTiO selected in this embodiment 3 Glass-ceramic, containing high polarizability Ti in glass matrix and crystallite phase 4+ , After heat treatment and crystallization, it has better optical limiting performance than the precursor glass. The optical limiting mechanism is two-photon absorption, and the optical limiting wavelength range is 400-800nm. The preparation of the glass-ceramic and the optical limiting performance of the 530nm-120fs-1kHz pulsed laser are described in detail below.

[0037] (1) BaTiO 3 Preparation of glass-ceramics

[0038] Select high-purity raw materials, and the molar ratio between raw materials is controlled at 19% Na 2 CO 3 , 24% BaCO 3 , 23%TiO 2 , 10% B 2 o 3 , 20% SiO2 2 , 4% Al 2 o 3 .

[0039] A total of 40 grams of raw materials were weighed, ground in an agate mortar for 40 minutes, then loaded into a platinum crucible, and placed in a furnace at 1400° C. for 1 hour. ...

Embodiment 2

[0045] LiNbO 3 Optical limiting glass-ceramics

[0046] The LiNbO selected in this embodiment 3 Glass-ceramics, the glass matrix contains Nb with high polarizability 5+ , After heat treatment and crystallization, it has better optical limiting performance than the precursor glass. The optical limiting mechanism is two-photon absorption, and the optical limiting wavelength range is 400-800nm. The preparation of the glass-ceramic and the optical limiting performance of the 530nm-120fs-1kHz pulsed laser are described in detail below.

[0047] (1) LiNbO 3 Preparation of glass-ceramics

[0048] Select high-purity raw materials, and control the molar ratio between raw materials to 35% Li 2 CO 3 , 25% Nb 2 o 5 , 40% SiO 2 .

[0049] A total of 40 grams of raw materials were weighed, ground in an agate mortar for 40 minutes, then put into a platinum crucible, and placed in a furnace at 1450° C. for 30 minutes. The melted glass is poured on a copper plate, then transferred t...

Embodiment 3

[0055] LiTaO 3 Optical limiting glass-ceramics

[0056] The LiTaO selected in this embodiment 3 Glass-ceramics, the glass matrix contains Ta with high polarizability 5+ , After thermal treatment and crystallization, it has better optical limiting performance than the precursor glass. The optical limiting mechanism is two-photon absorption, and the optical limiting wavelength range is 350-600nm. The preparation of the glass-ceramic and the optical limiting performance of the 450nm-120fs-1kHz pulsed laser are described in detail below.

[0057] (1)LiTaO 3 Preparation of glass-ceramics

[0058] Select high-purity raw materials, and the molar ratio between raw materials is controlled to 26% Li 2 CO 3 , 21% Ta 2 o 5 , 35% SiO 2 , 18%Al 2 o 3 .

[0059] A total of 40 grams of raw materials were weighed, ground in an agate mortar for 40 minutes, then put into a platinum crucible, and placed in a furnace at 1600° C. for 30 minutes. Pour the molten glass into two cylindric...

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Abstract

The invention discloses an application of a glass-ceramic material for laser protection. The glass-ceramic material is made of glass through heat treatment; the glass-ceramic is glass-ceramic with high high-polarizability ions in a composition of a glass matrix and a microcrystalline phase composition or glass-ceramic, a precipitated crystal phase of which is semi-conductor microcrystal; and the heat treatment specifically comprises the steps of: heating the glass-ceramic to a crystallization temperature range for 2-8 hours, closing a power supply of a muffle furnace after the heat preservation is finished, and cooling the glass to room temperature along with the furnace. The optical limiting glass-ceramic material for laser protection is simple in preparation process, high in chemical stability and thermal stability, and excellent in optical limiting capability.

Description

technical field [0001] The invention relates to the field of laser protection, in particular to the application of a glass-ceramic material used for laser protection. Background technique [0002] Since the advent of laser in the 1960s, it has been widely used in medicine, communication, materials, military and other fields. In the more than half a century that laser technology has been changing with each passing day, the energy that can be achieved by laser is getting higher and higher, and the pulse is getting shorter and shorter. The potential harm to human eyes and light-sensitive optical components is getting bigger and bigger. The emergence and installation of these weapons have also made countries pay more attention to the prevention and control of such weapons. Therefore, optical limiting materials have emerged as the times require. Strong linear relationship, its transmittance remains basically constant; as the input light intensity increases, the output light inte...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03B32/02
CPCC03B32/02C03C10/00
Inventor 周时凤时琢林丽婷陈杰杰杜观昕
Owner SOUTH CHINA UNIV OF TECH
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