Solid State Application by Fluoride Single Crystals

报告题目：Solid State Application by Fluoride Single Crystals

报告人：Prof. Mauro Tonelli

主持人：钟标博士

时间：2019-09-23 10:00

地点：理科大楼A207会议室

主办单位：精密光谱科学与技术国家重点实验室

报告内容简介：

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 cryocooler, and Metrologic application. The active parts of these devices are insulator hosts containing fluorine doped with trivalent rare earths to cover by solid state laser the UV, visible and near infrared wavelength region. We have investigated the spectroscopic properties and laser emission in the 2 mm wavelength region for two particular materials: KY₃F₁₀ and SrF₂ doped with Tm³⁺ and Ho³⁺, studying the slope efficiency and tunability. Also, we investigated LiYF₄ crystal co-doped with Yb³⁺, Tm³⁺ and showed by FFT analysis the contribution of Tm³⁺ to cooling effect.This behavior has been studied on two sample with different Tm³⁺ doping level. Moreover, we investigated the development of mono-crystal fiber (SCF) by micro-Pd technique and, for the first time, we showed by a birefringent SCF doped with Yb³⁺ the possibility to develop high power amplifier.

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 cryocooler 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.