Er∶Yb∶KGW激光晶体生长及缺陷研究  

Study on Growth and Defects of Laser Crystal Er∶Yb∶KGW

作　　者：张莹[1] 王成伟[2] 刘文莉[2] 张礼杰[1] 李建利[1] 刘景和[1] 

机构地区：[1]长春理工大学,吉林长春130022 [2]中国兵器科学研究院,北京100089

出　　处：《中国稀土学报》2006年第z1期92-95,共4页Journal of the Chinese Society of Rare Earths

摘　　要：采用顶部籽晶(TSSG)法生长Er:Yb:KGW晶体.通过研究助熔剂的种类、组成与溶质的比例关系对晶体生长的影响,设计了合理的工艺条件:转速:30～40 r·min-1;拉速:1～2 mm·d-1;降温生长速率:0.05 ℃·h-1;降温速率:15 ℃·h-1;生长周期:15～20 d.通过对晶体缺陷的观察分析认为,晶体裂缝及包裹物等缺陷与生长工艺条件密切相关,应尽量减少生长过程中的温度、浓度及生长速度的波动,保持晶体的稳态生长.The effect of some affection on the growth and defects of laser crystal Er∶Yb∶KGW,including the variety of flux,composition and the proportion of solute.The reasonable technological conditions were designed,the rotational speed: 30～40 r·min-1,the pulling speed: 1～2 mm·d-1;the growing speed drop in temperature: 0.05 ℃·h-1,the speed drop in temperature: 15 ℃·h-1,the period of growth: 15 d.The defects in crystal,including cracking and inclusions were observed.These defects in crystal can be explained by the instability of the growth and cooling,etc.By reducing the temperature,density and the speed-fluctuation during the growth-process in order to keep the crystal growing stably.

关 键 词：Er:Yb:KGW 晶体生长 顶部籽晶提拉法 缺陷 稀土 

分 类 号：O78[理学—晶体学]