A kind of tubular composite laser medium and its preparation method

A laser medium, tubular technology, applied in the direction of active medium materials, vacuum evaporation plating, coating, etc., to achieve good application prospects, improve single-mode transmission, and overcome the effect of low mechanical strength

Active Publication Date: 2020-04-07
安徽中科未来技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a tubular composite laser medium and its preparation method, which solves the problem of preparing tubular laser medium with a tubular wall thickness of μm level and a length of mm level

Method used

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  • A kind of tubular composite laser medium and its preparation method

Examples

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Embodiment 1

[0032] Example 1: Preparation of 2-layer YAG / Yb:YAG tubular composite laser medium by electron beam evaporation deposition method.

[0033]Firstly, a cylindrical rod body of Φ4mm and a length of 200mm is pulled out from a high-quality YAG crystal blank with a diameter of 90mm and a length of 200mm by using a rod pulling machine, and then a YAG hollow rod body with an outer diameter of Φ6.2mm and a length of 200mm is concentrically pulled out to obtain an outer diameter of Φ6. .2mm, inner diameter Φ4mm, and length 200mm YAG tubular substrate; grind the outer diameter of the tubular substrate to 6.05mm, then place it vertically in a high-uniformity annealing furnace, and perform stress annealing at 1000°C; adopt high-precision polishing technology, Polish the tubular cylinder, the outer diameter tolerance of the tubular substrate is ±0.01mm, and the surface roughness is better than 0.1μm; after the tubular cylinder is cleaned, it is placed on the fixture of the electron beam evap...

example 2

[0034] Example 2: Preparation of 3 layers of Al by pulsed laser deposition 2 o 3 / Nd:YAG / YAG tubular composite laser medium.

[0035] Using punching machine in high quality Al 2 o 3 A hole of Φ3 mm and length of 100 mm is drilled on the crystal blank, and then a long strip with a square cross section is cut out along the direction of the hole by a multi-wire cutting machine. The center of the cross section coincides with the center of the hole. The side length of the cross section is 5.2 mm and the length is 100 mm. Grind the outer diameter of the tubular substrate to 5.05mm, then place it vertically in a high-uniformity annealing furnace, and perform stress annealing at 1200°C; use high-precision polishing technology to polish the tubular cylindrical surface, and the tolerance of the outer diameter of the tubular substrate is ±0.01mm, the surface roughness is better than 0.1μm; after cleaning the tubular cylinder, place it on the fixture of the pulse laser deposition equip...

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Abstract

The invention discloses a tubular composite laser medium and a preparation method thereof, comprising n layers (n is an integer ≥ 2), the first layer from the inside to the outside is a tubular substrate, and the inner diameter of the tubular substrate is 0.5-50mm , the wall thickness is 0.5-10mm, the length is 1-500mm; the Nth layer is a tubular film (N=2, 3,...,n), the thickness of each tubular film is 0.1-100μm, and the length is 1-500mm; The general structural formula of the composite laser medium is: tubular substrate / tubular film 1 / tubular film 2 / … / tubular film (n-1), the material of each layer of tubular film can be the same or different, and one layer or several A layer of tubular thin film serves as the laser medium. The tubular laser medium of the present invention can improve the mechanical strength of the tubular thin-film laser medium on the one hand, and on the other hand, can realize the single-mode transmission of the laser and improve the heat dissipation problem of the tubular laser device, and can greatly improve the beam quality of the output laser. The field of solid-state laser has a good application prospect.

Description

technical field [0001] The invention belongs to the technical field of inorganic non-metallic materials, and in particular relates to a tubular composite laser medium applied in the field of solid-state lasers and a preparation method thereof. Background technique [0002] In recent years, tube-shaped laser media have gained widespread attention as a special configuration of laser materials, which have the following advantages in solid-state lasers: tube-shaped laser media can greatly improve the confinement of thermal effects, and can obtain better than rods and slabs. Shaped lasers have higher efficiency and higher output power per unit volume. Therefore, the tubular laser medium becomes one of the effective devices that people seek to obtain high output laser power. In order to pursue higher beam quality, the thinner the tubular laser medium layer, the better. When the medium thickness is controlled at several μm to hundreds of μm, the transmission of single-mode laser c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01S3/16C23C14/30C23C14/50C23C14/58C23C14/16C23C14/18
CPCC23C14/16C23C14/18C23C14/30C23C14/505C23C14/5806H01S3/16
Inventor 刘文鹏张庆礼殷绍唐孙敦陆孙贵花罗建乔张德明王小飞窦仁勤高进云
Owner 安徽中科未来技术有限公司
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