光折变晶体Bi_2TeO_5的生长及光学性能研究  

Growth and Optical Properties of Bismuth Tellurite Photorefractive Crystals

作　　者：罗丽庆[1] 徐家跃[1] 武安华[1] 向卫东[2] 葛增伟[1] 

机构地区：[1]中国科学院上海硅酸盐研究所,上海200050 [2]温州大学应用技术学院,温州325035

出　　处：《人工晶体学报》2006年第5期984-987,共4页Journal of Synthetic Crystals

摘　　要：采用坩埚下降法生长了新型光折变晶体B i2TeO5,通过优化生长工艺,获得了直径25mm、长度50mm的B i2TeO5晶体。研究了晶体开裂和变色等缺陷,测试了晶体的光学性能。测得B i2TeO5晶体的三阶非线性光学响应时间为8.5ps,三阶非线性光学系数为7.4×10-10。A novel photorefractive single crystal Bi2TeO5 has been grown by the modified vertical Bridgman method. The growth conditions were optimized and Bi2TeO5 crystal up to φ25mm ×50mm was obtained. Bi2TeO5 crystal shows considerably cleavage and chromism characteristics. Three-order nonlinear optical response time and coefficient were measured as 8.5ps and 7.4×10^-10, respectively.

关 键 词：Bi2TeO5 下降法 晶体生长 光学性能 

分 类 号：O78[理学—晶体学]