不同掺杂浓度Er∶Lu2O3透明陶瓷的制备与性能研究

摘要/Abstract

摘要： Er∶Lu₂O₃透明陶瓷具有高热导率、高抗热震性能、良好的光谱特性和低制备温度等优势,是实现近、中红外波段高效率、高功率激光输出的候选固态增益介质之一。针对Er∶Lu₂O₃透明陶瓷的应用激光波段,探究Er³⁺掺杂浓度对陶瓷制备和性能的影响,对实现高品质Er∶Lu₂O₃陶瓷的研制非常关键。本文以共沉淀法合成Er∶Lu₂O₃纳米粉体,采用真空预烧结合热等静压(HIP)烧结工艺制备出Er∶Lu₂O₃透明陶瓷。研究表明,1 100 ℃煅烧的Er∶Lu₂O₃纳米粉体物相与立方相Lu₂O₃一致,10%Er掺杂浓度(原子数分数)粉体分散性更好。经过1 500 ℃预烧所得的0.3%和10%(原子数分数)Er∶Lu₂O₃陶瓷的平均晶粒尺寸分别为0.86和0.87 μm,相对密度分别为95.1%和96.2%。对应预烧陶瓷经过1 750 ℃ HIP后,在2 400 nm处直线透过率分别为71.6%和78.0%(厚度2.9 mm),其中,0.3%Er∶Lu₂O₃陶瓷残留较多气孔,在短波范围直线透过率锐降。计算了Er∶Lu₂O₃透明陶瓷的吸收和发射光谱,0.3%Er∶Lu₂O₃陶瓷在1.55 μm 波段具有更高的吸收、发射截面。

关键词: Er∶Lu₂O₃, 纳米粉体, 两步烧结, 透明陶瓷, 微观结构, 光学特性

Abstract: Er∶Lu₂O₃ transparent ceramics are one of the candidate solid-state gain media for high efficiency and high power laser in the near and mid-infrared bands due to the advantages of high thermal conductivity, high thermal shock resistance, good spectral properties and low preparation temperature. Exploring the influence of Er³⁺ doping concentration (atomic number fraction) on the preparation and properties of Er∶Lu₂O₃ transparent ceramics for the related laser application is crucial for achieving high-quality Er∶Lu₂O₃ ceramics. In this paper, Er∶Lu₂O₃ transparent ceramics were fabricated using vacuum pre-sintering combined with hot isostatic pressing (HIP) post-treatment from the nano-powders synthesized by the coprecipitation method. The results show that the phases of all Er∶Lu₂O₃ nano-powders calcined at 1 100 ℃ with different Er³⁺ concentrations are almost consistent with that of the pure cubic Lu₂O₃ and the 10%Er∶Lu₂O₃ nano-powder shows better dispersibility. The average grain sizes of 0.3% and 10%Er∶Lu₂O₃ ceramics pre-sintered at 1 500 ℃ are 0.86 and 0.87 μm with the relative densities of 95.1% and 96.2%, respectively. The corresponding pre-sintered ceramics were HIP-ed at 1 750 ℃ show the in-line transmittance of 71.6% and 78.0% (thickness 2.9 mm) at 2 400 nm, respectively. Especially, the in-line transmittance of the 0.3%Er∶Lu₂O₃ ceramics sharply decreases in the short wave range due to the numerous remained residual pores. The absorption and emission spectra of 0.3% and 10%Er∶Lu₂O₃ transparent ceramics were calculated. 0.3%Er∶Lu₂O₃ ceramics possesses higher absorption and emission cross-sections around the band centered at 1.55 μm.

Key words: Er:Lu₂O₃, nano-powder, two-step sintering, transparent ceramics, microstructure, optical property

中图分类号:

刘子玉, 郑雯雯, 冯亚刚, 叶君豪, 刘鹏, 杨现锋, 李江. 不同掺杂浓度Er∶Lu₂O₃透明陶瓷的制备与性能研究[J]. 人工晶体学报, 2024, 53(11): 1892-1900.

LIU Ziyu, ZHENG Wenwen, FENG Yagang, YE Junhao, LIU Peng, YANG Xianfeng, LI Jiang. Fabrication and Properties of Er∶Lu₂O₃ Transparent Ceramics with Different Doping Concentrations[J]. JOURNAL OF SYNTHETIC CRYSTALS, 2024, 53(11): 1892-1900.

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不同掺杂浓度Er∶Lu₂O₃透明陶瓷的制备与性能研究

Fabrication and Properties of Er∶Lu₂O₃ Transparent Ceramics with Different Doping Concentrations

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