OPTICAL SPECTROSCOPY OF PR3+ IONS IN LINBO3

被引:57
作者
LORENZO, A
BAUSA, LE
SOLE, JG
机构
[1] Departamento de Física de Materiales, Universidad Autónoma de Madrid, Cantoblanco
来源
PHYSICAL REVIEW B | 1995年 / 51卷 / 23期
关键词
D O I
10.1103/PhysRevB.51.16643
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The optical absorption and fluorescence of Pr3+ ion in LiNbO3 has been systematically investigated. This system is characterized by a very intense red emission at 620 nm corresponding to the 1D2→3H4 transition. The luminescence of the metastable 3P0 state is almost completely quenched in contrast with other materials. The nonradiative deexcitation has been analyzed for the 1D2 multiplet in terms of a multiphonon process, and a quantum efficiency of 0.87 is experimentally deduced for this state at room temperature. Fluorescence quenching of 1D2 is observed when concentration is increased, and a cross-relaxation process is proposed for concentrations above 0.09 mol %. The fluorescence decay time functions are well explained in the frame of the Inokuti and Hirayama model considering mainly an electric dipole-dipole interaction. It has been also concluded that praseodymium ions are randomly distributed in the LiNbO3 host, so that local charge compensating Pr(Li+)-Pr(Nb5+) pairs must be disregarded. © 1995 The American Physical Society.
引用
收藏
页码:16643 / 16650
页数:8
相关论文
共 38 条
[1]  
Cordova Plaza A., Digonnet M., Shaw H.J., Miniature CW and active internally Q-switched Nd:MgO:LiNbO&lt
[2]  
inf&gt
[3]  
3&lt
[4]  
/inf&gt
[5]  
lasers, IEEE Journal of Quantum Electronics, 23 QE, (1987)
[6]  
Lallier E., Pocholle J.P., Papuchon M., de Micheli M., Li J.M., He Q., Ostrowski D.B., Grezes Besset C., Pelletier E., Nd:MgO:LiNbO_3 waveguide laser and amplifier, Optics Letters, 15, (1990)
[7]  
Lorenzo A., Bausa L.E., Garcia Sole J., J. Phys. Condens. Matter, 6, (1994)
[8]  
Nu nez L., Cusso F., Polarized absorption and energy levels of LiNbO3:Tm and LiNbO3(MgO):Tm, Journal of Physics: Condensed Matter, 5, (1993)
[9]  
Duchowicz R., Nu nez L., Tocho J.O., Cusso F., Solid State Commun., 88, (1993)
[10]  
Arizmendi L., Cabrera J.M., Phys. Rev. B, 31, (1985)