Flyer structure for laser driving and preparation method thereof

A laser-driven, flyer technology, used in laser welding equipment, manufacturing tools, welding equipment, etc., can solve problems such as low absorption rate, reduce reflection, solve high reflection problems, and improve laser absorption.

Active Publication Date: 2016-05-18
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

It is expected to solve the problem of the low absorption rate of the laser on the aluminum ablation layer in the traditional multi-layer flyer, improve the utilization rate of the laser, and help realize the fiber connection and miniaturization of this technology

Method used

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  • Flyer structure for laser driving and preparation method thereof
  • Flyer structure for laser driving and preparation method thereof

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Embodiment 1

[0027] like figure 1 As shown, according to an embodiment of the present invention, this embodiment discloses a flying sheet structure for laser driving, the structure includes a transparent substrate 1; a nano-aluminum array ablation layer 2 is set on the transparent substrate; An aluminum oxide heat-resistant layer 3 is filled on the aluminum array ablation layer; an aluminum flyer layer 4 is arranged on the aluminum oxide heat-resistant layer. Specifically, the material of the transparent base 1 can be K9 glass, transparent ceramic or transparent crystal. In this embodiment, a layer of metal aluminum is physically deposited on the surface of YAG transparent ceramic as a transparent substrate with a thickness of 1 μm. The metal aluminum is oxidized into porous alumina by anodic oxidation, and then the metal aluminum is electrodeposited in the holes, and the cylindrical nano-aluminum periodic array structure is obtained after the holes are filled. Alumina is filled in the g...

Embodiment 2

[0030] According to another embodiment of the present invention, this embodiment further discloses a method for preparing a laser-driven flyer structure, the method comprising the following steps:

[0031] Step 1. Physically deposit a layer of metal aluminum on the surface of the transparent substrate by means of anodic oxidation or electron beam etching.

[0032] Step 2. Oxidize metal aluminum into porous alumina, and then electrodeposit metal aluminum in the pores. After the holes are filled, a cylindrical nano-aluminum periodic array structure is obtained; make it produce surface plasmon resonance absorption effect with laser, reduce the metal aluminum to The reflection of laser light improves laser absorption.

[0033] Step 3, magnetron sputtering a layer of aluminum oxide heat-resistant layer on the surface of the cylindrical nano-aluminum periodic array structure.

[0034] Step 4. Deposit a metal aluminum flyer layer on the surface of the alumina heat-resistant layer by...

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Abstract

The invention discloses a flyer structure for laser driving and a preparation method thereof. The flyer structure comprises a transparent substrate which is provided with a nano-aluminum array ablation layer. The nano-aluminum array ablation layer is filled with an alumina insulation layer. The alumina insulation layer is provided with an aluminum flyer layer. According to the flyer structure for laser driving and the preparation method thereof, an ablation layer is prepared to be of a composite nano-structure of Al / Al2O3 so as to produce a surface plasmon resonance absorption effect with laser, accordingly, the reflex action of metallic aluminum on the laser is reduced, and laser absorption is improved; the problem that reflex of the metallic aluminum ablation layer on the laser is high in the laser-driven flyer process is solved, and the laser-driven flyer technique is promoted to be improved.

Description

technical field [0001] The invention relates to the technical field of laser-driven flyers, in particular to a laser-driven flyer structure and a preparation method thereof. Background technique [0002] The laser-driven flyer technology is to irradiate the metal film (flyer target) on the surface of the transparent substrate with a laser beam. The laser energy will ablate a part of the film layer to generate high-pressure plasma, and use the generated plasma to push the remaining film layer (flyer) Flying at high speed, it produces extremely high instantaneous impact pressure. Flyer target is a key component of energy conversion in laser-driven flyer, which includes a three-layer structure of ablation layer, heat resistance layer and flyer layer. The role of the ablation layer is to absorb the energy of the laser to generate high-pressure plasma. Due to the low heat of vaporization of aluminum metal, it is easy to form plasma, so it is considered as an ideal ablation laye...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K26/40B23K26/362C23C28/00C25D11/04C25D3/44C23C14/35C23C14/08C23C14/14
CPCB23K26/361B23K26/40C23C14/081C23C14/14C23C14/35C23C28/32C23C28/345C25D3/44C25D11/04
Inventor 吉祥波祝明水
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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