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过渡金属离子掺杂的可调频晶体光纤激光器(特邀)
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作者 李奕勋 郭俊毅 黄升龙 《光子学报》 EI CAS CSCD 北大核心 2020年第11期144-153,共10页
宽带可调频激光器除了可用于基础的光谱学研究外,也可应用于各式光通信乃至生物医学成像.过渡金属离子掺杂的固体激光器特别适用于宽频光源的产生,掺钛蓝宝石及掺铬石榴石晶体是目前广为应用的两个例子,将其生长成晶体光纤并以玻璃批覆... 宽带可调频激光器除了可用于基础的光谱学研究外,也可应用于各式光通信乃至生物医学成像.过渡金属离子掺杂的固体激光器特别适用于宽频光源的产生,掺钛蓝宝石及掺铬石榴石晶体是目前广为应用的两个例子,将其生长成晶体光纤并以玻璃批覆的激光器在红外光波段展现了优异的特性.掺钛蓝宝石晶体光纤激光器具有高光转换效率、低阀值且调频范围可达180 nm;掺铬石榴石晶体光纤激光器的可调频范围亦达到了170 nm,被激发态吸收所限制.为了纪念激光器发明60周年,本文简要回顾了过渡金属离子掺杂的固体激光器的发展,并介绍了晶体光纤激光器最新的成果.分析了掺钛蓝宝石晶体光纤激光器的调频速率,并与掺铬石榴石晶体光纤的光学特性做了实验与数值模拟的比较.目前逐渐成熟的玻璃批覆晶体光纤激光器,预期在超宽频光通信及细胞级分辨率的光学相干断层扫描术方面有很大的应用潜力. 展开更多
关键词 晶体光纤 激光器 掺钛蓝宝石 掺铬石榴石 宽带光通信 生医影像
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A special growth manner of intrahepatic biliary cystadenoma 被引量:3
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作者 Bin Yi Qing-Bao Cheng +5 位作者 Xiao-Qing Jiang Chen Liu Xiang-Ji Luo Hui Dong Bai-He Zhang Meng-Chao Wu 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第48期6134-6136,共3页
We report a case of a 56-year-old woman with intrahepatic biliary cystadenoma(IBC)accompanying a tumor embolus in the extrahepatic bile duct,who was admitted to our department on October 13,2008.Imaging showed an asym... We report a case of a 56-year-old woman with intrahepatic biliary cystadenoma(IBC)accompanying a tumor embolus in the extrahepatic bile duct,who was admitted to our department on October 13,2008.Imaging showed an asymmetry dilation of the biliary tree,different bile signals in the biliary tree,a multiloculated lesion and an extrahepatic bile duct lesion with internal septation.A regular left hemihepatectomy en bloc was performed with resection of the entire tumor,during which a tumor embolus protruding into the extrahepatic bile duct and originating from biliary duct of segment 4 was revealed.Microscopically,the multiloculated tumor was confirmed to be a biliary cystadenoma with an epithelial lining composed of biliary-type cuboidal cells and surrounded by an ovarian-like stroma.An aggressive en bloc resection was recommended for the multiloculated lesion.Imaging workup,clinicians and surgeons need to be aware of this different presentation. 展开更多
关键词 Intrahepatic biliary cystadenoma Growth manner Tumor embolus
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