Title :
Optical investigation of Eu/sup 3+/ and Tm/sup 3+/ in the Ca/sub 4/GdO(BO/sub 3/)/sub 3/ (GdCOB) crystal
Author :
Dominiak-Dzik, G. ; Ryba-Romanowski, W. ; Golab, S. ; Pajaczkowska, A.
Author_Institution :
Inst. for Low Temp. & Struct. Res., Polish Acad. of Sci., Wroclaw, Poland
Abstract :
Summary form only given. Previous literature demonstrates that neodymium doped Ca/sub 4/GdO(BO/sub 3/)/sub 3/ crystals combines advantageously nonlinear optical properties with an ability to amplify the light and is of interest as a self-frequency doubling material. Ca/sub 4/GdO(BO/sub 3/)/sub 3/ crystals doped with Eu/sup 3+/ and Tm/sup 3+/ are investigated to get more detailed knowledge on number of activator crystal-fields sites and processes contributing to the relaxation of rare earth ions in this matrix. It has been found that multiphonon relaxation plays a dominant role in the relaxation of excited states of Tm/sup 3+/ ions.
Keywords :
calcium compounds; crystal field interactions; europium; excited states; fluorescence; optical materials; phonon-phonon interactions; thulium; Ca/sub 4/GdO(BO/sub 3/)/sub 3/ crystals; Ca/sub 4/GdO(BO/sub 3/)/sub 3/:Eu,Tm; Ca/sub 4/GdO(BO/sub 3/)/sub 3/:Eu/sup 3+/,Tm/sup 3+/; Ca/sub 4/GdO(BO/sub 3/)/sub 3/:Nd; activator crystal-fields; excited states; multiphonon relaxation; nonlinear optical properties; rare earth ions; self-frequency doubling material; Crystalline materials; Crystals; Earth; Luminescence; Neodymium; Nonlinear optics; Optical materials; Polarization;
Conference_Titel :
Lasers and Electro-Optics Europe, 2000. Conference Digest. 2000 Conference on
Conference_Location :
Nice
Print_ISBN :
0-7803-6319-1
DOI :
10.1109/CLEOE.2000.910036
