掺Er^(3+)的NaY(WO_4)_2晶体的光谱特性  

Spectra characteristics of Er^(3+) doped NaY(WO_4)_2 crystal

作　　者：宋峰[1] 谭浩[1] 商美茹[1] 张光寅[1] 程振祥[2] 陈焕矗[2] 

机构地区：[1]南开大学光子学中心,天津300071 [2]山东大学晶体研究所,济南250100

出　　处：《物理学报》2002年第10期2375-2379,共5页Acta Physica Sinica

基　　金：国家自然科学基金 (批准号 :6990 80 0 2 );教育部重点基金 (批准号 :0 10 47)资助课题~~

摘　　要：测量了Er:NaY(WO4 ) 2 晶体的吸收光谱、激发光谱、发射光谱以及上转换发光 ,并对测量的结果进行了详细分析 ,得出了Er :NaY(WO4 ) 2 晶体的光学特性 .Absorption spectra, emission spectra and excitation spectra of Er3+ doped NaY(WO4)(2) crystal have been measured at room temperature. Such parameters as the intensity parameters, oscillation strength, rate of spontaneous emission, lifetime and integrated emission cross - section have been calculated according to J-O theory and absorption spectra. Upconversion luminescence of the crystal was measured and strong green light was observed, two-photon process for green and red upconversion lights and three-photon process for violet light were studied. From the measured spectra, the mechanism of transitions has been analyzed in detail and the cross relaxation (4)G(9/2) + I-4(11/2) --> H-2(11/2) + S-4(3/2) and (4)G(11/2) + I-4(9/2) --> H-2(11/2) + H-2(11/2) (or S-4(3/2)) were put forward.

关 键 词：光谱特性 NaY(WO4)2晶体 ER^3+ 吸收光谱 激发光谱 发射光谱 上转换发光 铒掺杂 

分 类 号：O734[理学—晶体学]