一种新型自激活激光晶体材料  

A New Self-Activated Laser Crystal Material

作　　者：宁凯杰[1] 张庆礼[1] 陈家康[1] 窦仁勤[1] 王小飞[1] 孙敦陆[1] 殷绍唐[1] 

机构地区：[1]中国科学院安徽光学精密机械研究所安徽省光子器件与材料重点实验室,安徽合肥230031

出　　处：《光学学报》2013年第11期167-171,共5页Acta Optica Sinica

基　　金：国家自然科学基金(90922021;51272254;50932005)

摘　　要：采用提拉法生长了尺寸为30mm×60mm的自激活NdTaO4(NTO)晶体,用Rietveld全谱拟合方法对晶体的结构进行研究,结果表明,该晶体为单斜晶系,空间群为I2/a,给出了晶体的晶格常数和密度。对晶体的室温吸收和发射光谱研究表明,其在808.5nm和885nm有很强的宽带吸收,在1063.5nm波段呈现明显的宽带荧光发射,有利于发展激光二极管(LD)抽运的可调谐或超短激光。该晶体有望发展成为一种高增益的自激活微片激光增益介质。A new self-activated NdTaO4 （NTO） crystal with the size of 30 mm×60 mm is grown by Czochralski method, and its crystal structure is investigated by the Rietveld full-profile fitting method. The grown NTO crystal shows the monoclinic system, space group I2/a, and lattice constants and density are also given. The room temperature absorption and emission spectra of NTO crystal are studied. The strong broadband absorption peaks at 808.5 nm and 885 nm and the obvious broadband emission at 1063.5 nm are suitable for the laser diode （LD） pumped tunable laser or ultrashort laser. The NTO crystal can be used as a high gain self-activated microchip laser medium.

关 键 词：材料 NdTaO4晶体 自激活 晶体生长 晶体结构 光谱性能 

分 类 号：O78[理学—晶体学]