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A high mechanical strength strong laser device frequency doubling element matching film and preparation method thereof

A technology with mechanical strength and strong laser, applied in the field of optical materials, it can solve the problems of long processing time and low mechanical properties of the matching film layer, and achieve the effect of enhancing internal bonding, excellent mechanical and mechanical properties, and improving the degree of cross-linking.

Active Publication Date: 2021-07-13
LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a high mechanical strength strong laser device frequency doubling element matching film and its preparation method, to solve the long post-processing time of the matching film layer prepared by the existing single siloxane polycondensation method, and the film layer mechanical low performance issues

Method used

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  • A high mechanical strength strong laser device frequency doubling element matching film and preparation method thereof
  • A high mechanical strength strong laser device frequency doubling element matching film and preparation method thereof
  • A high mechanical strength strong laser device frequency doubling element matching film and preparation method thereof

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Embodiment 1

[0028] The preparation method of the matching thin film of the frequency doubling element of the high mechanical strength strong laser device of this embodiment includes the following steps:

[0029] (1) Add 30 mol of methyltriethoxysilane, 3 mol of ethyl orthosilicate and 60 mol of methanol into the reaction kettle, heat the oil bath to 80°C, and then add deionization according to the molar ratio of 1:0.1:2:2 Water 60mol, after stirring and reacting for 50h, the oligomer sol was obtained;

[0030] (2) Dilute the oligomer sol and butanol according to the mass ratio of 1:1 to prepare the coating sol;

[0031] (3) Coating the coating sol on the KDP substrate by the spin coating method, and uniformly gluing at 700r / min for 40s;

[0032] (4) heat-treating the film to be cured at 140° C. for 3 hours to prepare a matching film.

[0033] The matching thin film prepared in this embodiment is marked as 1# matching thin film, and its laser damage threshold is tested. According to the...

Embodiment 2

[0035] The preparation method of the matching thin film of the frequency doubling element of the high mechanical strength strong laser device of this embodiment includes the following steps:

[0036] (1) Add 30mol of methyltriethoxysilane, 15mol of ethyl orthosilicate and 60mol of ethanol into the reaction kettle, heat the oil bath to 90°C, and then add deionization according to the molar ratio of 1:0.5:2:4 120mol of water, after stirring and reacting for 40h, the oligomer sol was obtained;

[0037] (2) Dilute the oligomer sol and heptane according to the mass ratio of 1:2 to prepare the coating sol;

[0038] (3) Apply the coating sol on the KDP substrate by the spin coating method, and uniform the glue for 60s at a speed of 700r / min;

[0039] (4) heat-treating the film to be cured at 120° C. for 2 hours to prepare a matching film.

[0040] The matching thin film prepared in this embodiment is marked as 2# matching thin film, and its laser damage threshold is tested. Accord...

Embodiment 3

[0042] The preparation method of the matching thin film of the frequency doubling element of the high mechanical strength strong laser device of this embodiment includes the following steps:

[0043] (1) Add 30mol of methyltriethoxysilane, 30mol of ethyl orthosilicate and 60mol of acetone into the reaction kettle, heat the oil bath to 100°C, and then add deionization according to the molar ratio of 1:1:2:6 180mol of water, after stirring and reacting for 30h, the oligomer sol was obtained;

[0044] (2) Dilute the oligomer sol and decane according to the mass ratio of 1:3 to prepare the coating sol;

[0045] (3) Coating the coating sol on the KDP substrate by the spin coating method, and uniformly gluing at 700r / min for 80s;

[0046] (4) heat-treating the film to be cured at 130° C. for 1 hour to prepare a matching film.

[0047] The matching thin film prepared in this embodiment is marked as 3# matching thin film, and its laser damage threshold is tested. According to the r...

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Abstract

The invention discloses a high-mechanical-strength strong laser device frequency doubling element matching film and a preparation method thereof, belonging to the technical field of optical materials. It comprises the following steps: mixing methyltriethoxysilane, ethyl orthosilicate, deionized water and an organic solvent, stirring and reacting under heating to obtain an oligomer sol; mixing the oligomer sol with an organic solvent , to obtain a coating film sol; coating the coating film sol on the substrate to obtain a film to be cured; heat-treating the film to be cured to obtain a matching film. The matching film prepared by the invention has higher curing strength and better mechanical properties.

Description

technical field [0001] The invention relates to the technical field of optical materials, in particular to a matching thin film of a frequency doubling element of a strong laser device with high mechanical strength and a preparation method thereof. Background technique [0002] Optical components in powerful laser devices need to be coated with a special anti-reflection coating to achieve high-energy transmission of laser light, and the output surface of the frequency doubling element needs to achieve high anti-reflection for both 527nm and 1053nm. In order to achieve high anti-reflection at dual wavelengths, two layers of thin films with specific refractive index and film thickness must be prepared on the output surface of the frequency doubling element, namely the matching film and the anti-reflection film. SiO 2 Anti-reflection coating system is a widely used optical material with good optical properties, laser damage resistance and chemical stability, and is the first c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/04C08J5/18G02B1/04G02B1/10G02B1/111C08L83/04
CPCC08G77/04C08J5/18C08J2383/04G02B1/04G02B1/10G02B1/111
Inventor 王天宇邓雪然雷向阳杨伟惠浩浩张清华马红菊张帅张利平张剑锋
Owner LASER FUSION RES CENT CHINA ACAD OF ENG PHYSICS
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