Femtosecond laser instant color development and regulation method

Abstract

The invention discloses a femtosecond laser instant color development and regulation method. The method comprises the following steps: weighing corresponding content values of the raw materials according to the components of glass, and fully grinding the raw materials to form a mixture; preprocessing the mixture at 400-500 DEG C, melting the preprocessed mixture in a 1200-1250 DEG C high-temperature smelting furnace, cooling the melted mixture to obtain a glass sample, cutting and polishing the glass sample, and moving a precise processing platform in a three-dimensional manner to control a distance between the surface of the sample and a focus in order to make a laser beam perpendicularly irradiate the internal of the glass sample; and carrying out heat treatment on the femtosecond laserirradiated glass for different time periods to obtain a pattern which can erased to different degrees and until completely, wherein the heat treatment temperature is selected near the transition temperature of the glass. The color of the processed area of the glass can be controlled by changing the content of lead, the femtosecond pulsed laser energy and the heat treatment time period after femtosecond processing; and the erasing of the developed color can be realized under a suitable heat treatment time period.

Description

technical field [0001] The invention relates to a glass color development technology, in particular to a femtosecond laser instant color development and control method. Background technique [0002] In the prior art glass color rendering process, there are generally three types of implementation methods. The first type is to use the laser to interact with the glass to induce a microstructure inside the transparent glass. After heat treatment, gold or silver nanoparticles are reduced and precipitated in the microstructure area to obtain a color pattern. This method must undergo post-stage heat treatment to provide migration and diffusion energy for gold and silver atoms. When the heat energy is higher than the free energy required for the nucleation of gold and silver nanoparticles, the gold and silver atoms will aggregate and deposit, showing light yellow or purple, etc. color. [0003] The second type is to dope rare earth ions inside the glass, and use femtoseconds to pe...

AI Technical Summary

Problems solved by technology

However, to achieve color development, not only external conditions such as post-illumination or heating are required, but also the preparation process is more complicated than the general glass preparation process because of the need for coating or filling.

More importantly, the currently used color-changing compounds are mainly organic compounds or nanoparticles, which are difficult to maintain their long-term chemical stability, and their color development is also difficult to maintain for a long time.

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