SEMINAR
Key Laboratory of Transparent Opto-fuctional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences
中国科学院上海硅酸盐研究所透明光功能无机材料重点实验室

　　Quasi-three level solid state laser Materials based on trivalent Neodymium for blue laser generation: from transparent ceramics to single crystals

　　Speaker

　　Professor Gerard AKA

　　PSL Research University, Chimie ParisTech - CNRS, Institut de Recherche de Chimie Paris - France

　　时间：11月19日 （周三）2:30PM

　　地点：4号楼3楼会议室

　　联系人：徐军, 武安华（4238）

　　Abstract

　　Diode pumped solid-state laser in the visible spectral range have applications in the fields of measurement techniques, printing and display technology. Especially in the field of underwater communication, high density optical storage, medical diagnostics, and colors display technology, there has been great interest in multiwatt level blue laser emission. Laser diode pumped solid-state quasi three levels Nd3+ doped host has been proved to be the best solution to achieve this goal. Nevertheless, find a crystalline material able to satisfy all requirements regarding spectroscopic, shortest wavelength, thermal load management and efficient output laser characteristic remain the key point of the problem. Therefore, a lot of work is now going on the development of new class of Nd3+doped crystalline materials. Moreover, if the crystalline host crystal field characteristic allows the shortest emission on the quasi three level 4F3/2 → 4I9/2 laser transition (around 900 – 950 nm) it is easy to achieve the goal. A nonlinear crystal as frequency converter will then permit to reach wavelength deeper in the blue. The lecture will make a review of work going on in this field regarding laser host and nonlinear crystal point of view.

　　AKA教授简介：Gérard AKA教授现为法国巴黎国立高等化工大学(Chimie Paristech)教授，YCOB和GdCOB晶体的发现者，美国光学学会会员。他的主要研究领域包括氧基光学材料固态合成；激光、非线性光学材料提拉和熔盐生长；非线性光学材料的激光特性研究，迄今共发表论文150篇，h因子23。