联系我们  |  网站地图  |  English   |  移动版  |  中国科学院 |ARP
站内搜索:
首页 简介 管理部门 科研部门 支撑部门 研究队伍 科研成果 成果转化 研究生教育 党建与创新文化 科普 信息公开 办公内网 OA系统
学术活动
东生讲坛第2期--DNA based...
无机功能材料与器件重点实...
Crystal Phase Engineerin...
Recent development in ph...
透明陶瓷中心学术报告
仿生多尺度孔道的研究
激子过程调控优化无机半导...
分子影像的应用与问题
Grain Boundary Mobility ...
环境污染物的光电化学识别...
Femtosecond Laser-Induce...
无机功能材料与器件重点实...
“会聚”时代的人工晶体讲...
基于材料设计高效的抗肿瘤...
Near-Infrared Optical Bi...
现在位置:首页>新闻动态>学术活动
Co2+-DOPED OXIDE GLASS-CERAMICS AS PHOTOTROPIC MATERIALS
2018-06-11 08:39:10 | 【 【打印】【关闭】

  SEMINAR 

  Transparent Ceramics Research Center, SICCAS 

  Key Laboratory of Transparent Opto-fuctional Inorganic Materials, CAS 

  中国科学院上海硅酸盐研究所透明陶瓷研究中心 

  中国科学院透明与光功能无机材料重点实验室 

    

  Co2+-DOPED OXIDE GLASS-CERAMICS AS PHOTOTROPIC MATERIALS 

    

  Speaker 

  Dr. Serhii Parkhomenko 

  Institute for Single Crystals, NAS of Ukraine 

    

  时间:612 (星期二)10:00 AM 

  地点:嘉定园区F4楼会议室 

  联系人:李江(69163689 

    

  Abstract:  

  The report describes fabrication of phototropic materials based on oxide glass-ceramics. The report focuses on the application phototropic materials, in particular on their role in the modern laser technology as a saturable absorber. 

  The working principle of saturable absorbers based on transition metal ions in a four-coordinated environment has been considered. The main requirements to the materials are substantiated, attention is paid to the peculiarities of the excitation and relaxation processes of such ions in the "saturable absorber" regime. A list of actual crystalline media showing a significant phototropic effect upon activation by transition metal ions is given. The demands and direction of the search for new media for the realization of the phototropic effect of transition metal ions are shown. 

  The possibility of directed control of the functional parameters of saturable absorbers by creating phototropic materials based on composite glass-ceramic (GC) media as a matrix for the accommodation of transition metal ions is discussed. The principal features of the preparation and structure of such materials are considered, the possibility of their use as saturable absorbers and comparative characteristics are shown. The choice of a model system of glass ceramics (oxide nanocrystals activated by Co2+ in a glass matrix) is substantiated. GC allows one to change the parameters of nonlinear absorption by variation the crystal field on the metal ions if the composition of the matrix medium is modified.    

Serhii Parkhomenko was born on September 15, 1980, in Kharkiv, Ukraine. He graduated from National Technical University “Kharkiv Polytechnic Institute”. In 2008 he defended Ph.D. Thesis in Technical Sciences at Institute for Single Crystals, NAS of Ukraine (specialty Solid State Physics). 

  He works at Institute for Single Crystals, NAS of Ukraine, from 2004. Now he is Senior Researcher of Department of Crystalline Materials of Complex Crystalline Compounds. Research activity of Serhii Parkhomenko is devoted to fabrication and characterization of nanocrystalline and nanostructured materials for photonics and laser technique, development of functional optical ceramics, study of the sintering processes of oxide nanopowders. 

    

版权所有 中国科学院上海硅酸盐研究所 沪ICP备05005480号
长宁园区地址:上海市长宁区定西路1295号 电话:86-21-52412990 传真:86-21-52413903 邮编:200050
嘉定园区地址:上海市嘉定区和硕路585号  电话:86-21-69906002 传真:86-21-69906700 邮编:201899