CAJ | 학술논문

本文报道了布里奇曼法生长的高品质Cr:iSrAlF6 晶体及其激光特性.采用固相氟化反应除去原料中的氧化物和水.在较小的温度梯度和较慢的生长速率下生长出的Cr:iSrAlF6晶体尺寸达到φ20mm×130mm.均匀的Cr3+掺杂浓度为1～15mol%.从XRD谱图计算出的Cr:iSAF晶体点阵参数为a=0.502nm,c=0.967nm.测试了晶体的吸收曲线,并分析了其吸收与能带结构的关系.实现了闪光灯泵浦的Cr:iSAF激光器运转,激光转换斜效率达到5.85%.
본문보도료포리기만법생장적고품질Cr:iSrAlF6 정체급기격광특성.채용고상불화반응제거원료중적양화물화수.재교소적온도제도화교만적생장속솔하생장출적Cr:iSrAlF6정체척촌체도φ20mm×130mm.균균적Cr3+참잡농도위1～15mol%.종XRD보도계산출적Cr:iSAF정체점진삼수위a=0.502nm,c=0.967nm.측시료정체적흡수곡선,병분석료기흡수여능대결구적관계.실현료섬광등빙포적Cr:iSAF격광기운전,격광전환사효솔체도5.85%.
High quality Cr:iSrAlF6 (abbreviated as Cr:iSAF) crystals were grown by Bridgman method and their laser performance are reported in this paper. The starting materials were treated using a solid fluorinating agent to remove oxides and water. The size of Cr:LiSrAlF6 crystals, which were grown in a small temperature gradient at a slow growth rate, is up to 20mm in diameter and 130mm in length. 1-15mol% homogeneous Cr3+ doping concentration can be realized. From the XRD spectrum of Cr:iSAF, the lattice parameters are figured out to be a=0.502nm and c=0.967nm. The absorption spectrum of Cr:iSAF was measured and the causes bringing about the absorptions were discussed. Flashlamp-pumped Cr:iSAF laser action was realized. The slope efficiency of flashlamp-pumping is up to 5.85%.