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A method for preparing a diamond vortex beam generator by chemical treatment-assisted laser processing and its application

A chemical treatment and vortex beam technology, applied in chemical instruments and methods, liquid cleaning methods, laser welding equipment, etc., can solve the problems of complex preparation process, high cost, poor precision, etc. The effect of low cost and good optical characteristics

Active Publication Date: 2021-03-30
JILIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It can be seen that the existing technology for processing and forming diamonds faces shortcomings such as poor precision, high cost, and complicated preparation processes.

Method used

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  • A method for preparing a diamond vortex beam generator by chemical treatment-assisted laser processing and its application
  • A method for preparing a diamond vortex beam generator by chemical treatment-assisted laser processing and its application
  • A method for preparing a diamond vortex beam generator by chemical treatment-assisted laser processing and its application

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Experimental program
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Effect test

Embodiment 1

[0033] Fabrication of diamond vortex beam generators by chemical treatment-assisted laser processing.

[0034] After using the ultraviolet femtosecond laser to directly write the designed spiral zone plate structure on the diamond surface, put the diamond sample into the prepared mixed acid solution of concentrated sulfuric acid and concentrated nitric acid, and heat it in a hydrothermal reaction oven. The chemical treatment process After the end, the diamond sample is taken out and cleaned, and finally the vortex beam generator on the diamond surface is obtained.

[0035] A method for preparing a diamond vortex beam generator by chemical treatment-assisted laser processing, the specific steps are as follows:

[0036] (1) Preparation of diamond samples: The diameter of the purchased high-temperature and high-pressure diamond samples is about 1 mm, the upper and lower surfaces are polished, and the thickness is 800 μm; first, put the diamond particles to be processed by laser i...

Embodiment 2

[0043] The diamond-based vortex beam generator is applied to the generation of vortex beams and optical imaging focusing.

[0044] The device size, topological charge, focal length, etc. of the diamond vortex beam generator prepared by chemical treatment-assisted laser processing can be designed. The preparation process is simple, time-consuming, and has no mask. It can be applied to vortex beams. generation and optical imaging focusing. The spiral zone plate structure designed as a vortex beam generator can be regarded as a combination of a common amplitude Fresnel zone plate and a spiral phase plate, so the Gaussian beam after passing through the spiral zone plate structure The amplitude and phase change, and the changed phase is proportional to the azimuth angle, carrying the orbital angular momentum, the Gaussian beam becomes a vortex beam, and the spiral zone plate structure also retains the imaging focus of the Fresnel zone plate similar to a convex lens Features. Ther...

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Abstract

The invention discloses a method for preparing a diamond vortex beam generator by using chemical-processing assisted laser processing and an application thereof, and belongs to the technical field offemtosecond laser processing. The method comprises the step that a designed spiral zone plate structure is directly written on the surface of a diamond sample by an ultraviolet femtosecond laser, thenthe sample is subjected to ultrasonic cleaning and chemical processing, and finally the vortex beam generator on the surface of the diamond is prepared. The main principle of the method is that a hotmixed acid solution is used for carrying out chemical reaction with a graphitized substance generated in the action process of a laser focus and the diamond surface, so that the graphitized substanceis completely removed, the adverse effect on the obtained structural morphology is avoided, and a vortex beam generator element with low roughness and excellent optical performance is obtained.

Description

technical field [0001] The invention belongs to the technical field of femtosecond laser processing, and in particular relates to a diamond vortex beam generator structure with high surface quality and excellent optical performance obtained by chemically treating laser processed diamond samples and its application. Background technique [0002] Diamond materials have high hardness, high thermal conductivity and low thermal expansion coefficient, chemical inertness and biocompatibility, and are usually used as decorations, preparation of cutting tools, drug carriers, etc. Due to the superior single-photon characteristics of some point defect light sources inside diamond, diamond materials are also widely used in the field of quantum information. With the continuous expansion of application fields, more and more attention has been paid to the high-precision forming and processing of diamond materials. At present, laser cutting, as a traditional method of processing diamond, m...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K26/362B23K26/082B23K26/064B23K26/352B23K26/70B08B3/08B08B3/12
CPCB08B3/08B08B3/12B23K26/0648B23K26/362B23K26/064B23K26/082B23K26/352B23K26/702
Inventor 孙洪波高斯陈岐岱
Owner JILIN UNIV
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