报告题目：Fluoride Crystals: Exotic materials for photonic applications

报告人：Prof. Mauro Tonelli

主持人：杨涛 研究员

时间：10月17日（周三）上午10:00

地点：理科大楼A814会议室

主办单位：精密光谱科学与技术国家重点实验室

报告摘要：

We developed high-quality single fluoride crystals by Czochralski technique. This activity covers different applications such as IR and visible laser, photovoltaic applications, solid state crycooler, and Metrologic application.The active parts of these devices are insulator hosts containing fluorine doped with trivalent rare earths to develop solid state laser in the UV, visible and near infrared wavelength region. We have investigated the spectroscopic properties and energy transfer mechanisms to tune high-efficiency IR tunable lasers (about 300 nm) in CW and pulsed operation regime. Also, we investigated LiYF4 crystal doped with Yb3+and showed for the first time the development of solid state crycooler with the possibility to rise cryogenic temperature. By the same materials we have investigated laser emission in the visible region by fluoride crystal doped with Pr3+ and Dy3+ and showed the potential applications for optical atomic clock. It has been showed for the first time, the yellow CW laser emission by fluoride crystals and the possibility to develop Pr3+ laser emission for Sr and Sr+ atomic clock application.

报告人简介:

Prof. Mauro Tonelli is the coordinator of the research group “New Materials for Laser Applications” operating at the Physics Department of Pisa University. He is the famous for laser crystal growthandapplication, especially for alkali halides crystals, oxide and fluoride crystals doped with rare earth ions. The growth facility of his research group has been developed inside the Physics Department of Pisa University and it is the only one in Italy and one of the few in the world to develop insulator fluoride materials formedical, mechanical and laser applications, especially for the solid state crycooler by optical pumping. He is also working in the Virgo gravitational interferometer on optical detection systems to detect gravitational waves.He is co-author of more 300 papers published on refereed books and scientific journals. And the paper was cited more than 10538 times.

中文简介：

Mauro Tonelli教授是比萨大学物理系“激光对于新材料的应用”研究组负责人。以激光晶体生长和应用而闻名，特别是掺杂稀土离子的碱金属卤化物晶体，氧化物和氟化物晶体。他的研究小组是意大利唯一一家乃至世界少有的几家开发用于医疗，器械及激光应用绝缘体氟化物材料，特别是用于激光冷却方面的材料。他曾参与利用处女座引力干涉光学检测系统探测引力波的工作。发表sci论文300余篇，被引10538次以上。