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

作　　者：王晴晴 石云[2] 冯亚刚[2,3] 谢腾飞 李江[2,3] WANG Qing-qing;SHI Yun;FENG Ya-gang;XIE Teng-fei;LI Jiang(Engineering Technology Research Center for New Silicon-based Materials,Faculty of Science,Bengbu University,Bengbu 233030,China;Key Laboratory of Transparent Opto-functional Inorganic Materials,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201899,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]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 [2]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 [3]中国科学院大学材料与光电研究中心,北京100049

出　　处：《发光学报》2019年第11期1365-1372,共8页Chinese Journal of Luminescence

基　　金：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~~

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1064 nm处的直线透过率分别为81.5%和84.0%,晶胞密度为4.57 g/cm^3,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。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 1064 nm,the cell density is 4.57 g/cm^3,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.

关 键 词：Cr Nd∶YAG陶瓷 太阳光泵浦 光谱特性 激光参数 

分 类 号：TQ174[化学工程—陶瓷工业]