Method and device for preparing periodic stripe structure on surface of glass coated with ITO (Indium Tin Oxide) film

Abstract

The invention discloses a method and device for preparing a periodic stripe structure on the surface of glass coated with an ITO film. The method is characterized in that the surface of glass is coated with a layer of ITO film with a low ablation threshold value; a femtosecond laser beam focused by a cylindrical lens is used for forming a laser focal spot on the surface of the glass to induce generation of periodic stripe growth; and a long-strip-shaped periodic stripe structure with the width being the diameter of the laser beam is prepared on the surface of the glass through laser energy flow density ten times lower than a glass ablation threshold value. The device comprises a light source system, a monitoring system, a machining system and a control system. Compared with the prior art,the method has the advantages that a large-area periodic stripe structure is prepared on the surface of a transparent material, the optical properties, such as absorption, luminescence and coloring, of the surface of the material are regulated and controlled, the anti-interference capability is high, and application and popularization of femtosecond laser-induced periodic stripes in the aspect ofsurface modification of the transparent material are further promoted.

Description

technical field [0001] The invention relates to the technical field of laser preparation of micro-nano structures, in particular to a method and a device for preparing a large-area periodic stripe structure on a glass surface covered with an ITO thin film. Background technique [0002] Efficient fabrication of large-area periodic stripe structures on glass surfaces has great potential for applications including identification, color-based anti-counterfeiting, and wettability. Many studies have reported the use of high repetition rate femtosecond lasers to fabricate periodic nanostructures inside glass, and these structures are used in applications such as birefringent materials, digital storage, and wave plates. At present, using femtosecond laser to quickly and efficiently prepare regular large-area periodic micro-nano structures on the glass surface is an important technical means to control the surface properties of materials, which will help to further improve the surfac...

AI Technical Summary

Problems solved by technology

However, how to effectively prepare uniform and regular periodic stripes on the glass surface and promote the application and promotion of femtosecond laser-induced periodic stripes in the surface modification of transparent materials is still a huge challenge.

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