3D Printing of Gradient-Doped Yb∶YAG Laser Ceramics by Leveraging Active Mixing

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外文摘要：Gradient-doped laser ceramics fabricated via 3D printing have great potential for high-power laser applications.However,it is challenging to produce such types of gain media because it is inconvenient to fabricate different component slurries prepared offline using traditional methods precisely.To address these issues,a facile approach for the additive manufacturing of high-power laser ceramics is proposed for gradient structure fabrication.First,a material-extrusion-based 3D printing device with a homemade active mixing module is developed to fabricate gradient-doped Yb∶YAG(Y3Al5O12)laser ceramics using two slurries with different doping concentrations.Sub-sequently,the active mixing module is systematically investigated to obtain different Yb-doped concentrations of printing slurries with a uniform element distribution.By measuring the switching delay volume between dif-ferent components,a proper volume adjustment enables the Yb concentration distribution of the green bodies to be consistent with the designed profile in the 3D process.Finally,multi-component(0-5-10-5-0 at％Yb∶YAG)green bodies are printed,and experimental tests are conducted to evaluate the performance of these gradient-doped laser ceramics.The results show that the gradient-doped ceramic obtained 82.1％in-line transmittance at 1100 nm(4.6 mm thickness,along with the doping concentration gradient)and the average Yb ions diffusion distance across the interface fitted in the 20-30 pm range.Furthermore,a 1030 nm laser output with an output power of 4.5 W with a slope efficiency of 41.3％is achieved when pumped with a 940 nm laser diode.This study provides useful insights for developing various gradient rare-earth-doped laser ceramics for high-power laser applications.

外文关键词：

Yb∶YAGLaser ceramics3D printingGradient-dopedActive mixing

作者：

Mengmeng Xie、Haohao Ji、Dewen Wang、Junping Wang、Jian Zhang、Yu Liu、Dianzi Liu、Shiwei Wang、Nianjiang Chen、Lei Wang、Yuan Gao

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作者单位：

School of Mechanical Engineering,Jiangnan University,Wuxi,214122,China

State Key Laboratory of High Performance Ceramics and Superfine Microstructure,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai,200050,China

Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing,100049,China

School of Engineering,University of East Anglia,Norwich,NR4 7TJ,UK

Science and Technology on Solid-State Laser Laboratory,Beijing,100015,China

Qian Xuesen Laboratory of Space Technology,China Academy of Space Technology,Beijing,100081,China

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基金：

National Key Research and Development Program of ChinaJiangsu Provincial Key Research and Development ProgramNational Natural Science Foundation of ChinaNational Basic Science Research Program of ChinaUnveiling and Hanging Project of Nantong

项目编号：

2023YFB3812000BE2022069-252130207JCKY2021203B032JB2022001

出版年：

2024

DOI：

10.1016/j.amf.2024.200118

中国机械工程学报:增材制造前沿(英文)

ISSN：

年,卷(期)：2024.3(1)