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太阳光泵浦Cr,Nd∶YAG透明陶瓷的光谱特性和激光参数

Spectral Characteristics and Laser Parameters of Solar Pumped Cr,Nd∶YAG Transparent Ceramics

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摘要

太阳光泵浦激光器可将太阳光直接转化为激光, 在空间太阳能发电站、深海等领域有着极大的应用前景, 而Cr,Nd∶YAG是一种很有潜力的太阳光泵浦激光介质。 本文以高纯Y2O3、α-Al2O3、Nd2O3、Cr2O3粉体作为原料, 采用固相反应法结合真空烧结技术制备了高光学质量的0.1%Cr,1.0%Nd∶YAG透明陶瓷, 并研究了其光谱特性和激光参数。根据太阳辐照光谱和Cr,Nd∶YAG陶瓷的吸收和发射光谱, 计算了不同条件下Cr,Nd∶YAG陶瓷激光器的泵浦率、阈值太阳聚光比、有效发射截面、饱和光强和阈值输入功率等激光参数。研究发现0.1%Cr,1.0%Nd∶YAG陶瓷(厚度为1.0 mm)在370 nm和1 064 nm处的直线透过率分别为81.5%和84.0%, 晶胞密度为4.57 g/cm3, 光学散射损耗为1.4% cm-1, 吸收带内的太阳辐照度约是太阳常数的 42%。上述研究结果表明Cr,Nd∶YAG陶瓷是理想的太阳光泵浦激光介质, 可通过优化聚光系统、泵浦方式和陶瓷尺寸获得高功率激光输出。

Abstract

Solar pump laser can directly convert sunlight into laser, which has great application prospect in space solar power station, deep sea and other fields. Cr,Nd∶YAG is a kind of solar pump laser medium with great potential. 0.1%Cr,1.0%Nd∶YAG transparent ceramics with high optical quality were fabricated by solid-state reactive sintering using high-purity Y2O3, α-Al2O3, Nd2O3 and Cr2O3 powders as raw materials. The spectral characteristics and laser parameters of 0.1%Cr,1.0%Nd∶YAG ceramics were studied in this paper. According to the solar irradiance spectrum, the absorption and fluorescence spectra of Cr,Nd∶YAG ceramics, the laser parameters of Cr,Nd∶YAG ceramic laser, such as pump rate, threshold solar concentration ratio, effective emission cross section, saturation intensity, and the threshold input power were calculated under different conditions. The study found that the in-line transmittance of 0.1%Cr,1.0%Nd∶YAG ceramics with the thickness of 1.0 mm reaches 81.5% at 370 nm and 84.0% at 1 064 nm, the cell density is 4.57 g/cm3, and the optical scattering loss is about 1.4% cm-1, the solar irradiance in the absorption band is about 42% of the solar constant. The results show that Cr,Nd∶YAG ceramics are ideal laser media for solar pumping. High power laser output can be obtained by optimizing the focusing system, pumping mode and ceramic size.

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中图分类号:TQ174

DOI:10.3788/fgxb20194011.1365

所属栏目:材料合成及性能

基金项目:安徽省教育厅国内访学项目(gxgnfx2018059); 蚌埠学院自然科学项目(2018ZR06zd); 蚌埠学院质量工程项目 (2017JYXML19); 国家自然科学基金(61575212); 中国科学院前沿基础重点项目(QYZDB-SSW-JSC022)资助

收稿日期:2019-06-17

修改稿日期:2019-07-25

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王晴晴:蚌埠学院 理学院, 硅基新材料工程技术研究中心, 安徽 蚌埠 233030中国科学院上海硅酸盐研究所 透明光功能无机材料重点实验室, 上海 201899
石 云:中国科学院上海硅酸盐研究所 透明光功能无机材料重点实验室, 上海 201899
冯亚刚:中国科学院上海硅酸盐研究所 透明光功能无机材料重点实验室, 上海 201899中国科学院大学 材料与光电研究中心, 北京 100049
谢腾飞:中国科学院上海硅酸盐研究所 透明光功能无机材料重点实验室, 上海 201899
李 江:中国科学院上海硅酸盐研究所 透明光功能无机材料重点实验室, 上海 201899中国科学院大学 材料与光电研究中心, 北京 100049

联系人作者:王晴晴(sunny3406@163.com)

备注:王晴晴(1985-), 女, 安徽宿州人, 博士, 讲师, 2013年于中国科学院固体物理所获得博士学位, 主要从事激光材料和荧光材料方面的研究。

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引用该论文

WANG Qing-qing,SHI Yun,FENG Ya-gang,XIE Teng-fei,LI Jiang. Spectral Characteristics and Laser Parameters of Solar Pumped Cr,Nd∶YAG Transparent Ceramics[J]. Chinese Journal of Luminescence, 2019, 40(11): 1365-1372

王晴晴,石 云,冯亚刚,谢腾飞,李 江. 太阳光泵浦Cr,Nd∶YAG透明陶瓷的光谱特性和激光参数[J]. 发光学报, 2019, 40(11): 1365-1372

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