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Fluoride Single Crystals: Exotic Materials for Photonic Application
2019-09-27 12:42:18 | 【 【打印】【關閉】

Fluoride Single Crystals: Exotic Materials for Photonic Application 

Synthetic Crystal Research Center, Shanghai Institute of Ceramics    

Key Laboratory of Transparent Opto-functional Inorganic Materials, CAS    

人工晶體研究中心、中國科學院透明光功能无机材料重点实验室   

Fluoride Single Crystals: Exotic Materials for Photonic Application

Mauro Tonelli 

Nest-Nanoscience Insitute-CNR and Dipartimento di Fisica-Universita’ di Pisa –Italy 

報告時間:2019927日(周五)15:00~17:00  

報告地點:嘉定園區F7樓第二会议室   

聯系人:蘇良碧(13761928159 

  Abstract 

  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 include insulator hosts of fluoride 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 of rare earth doped fluoride crystals 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 cryocooler with the possibility to rise cryogenic temperature. Using the same material, 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. Moreover, we investigated, for the first time, the single birefringent fluoride fiber doped with Yb3+ by micro-PD technique to develop high power amplifier.  

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