Infrared to visible up-conversion fluorescence spectroscopy in Er3+-doped chalcogenide glass

被引:33
作者
Amorim, HT
de Araujo, MT
Gouveia, EA
Gouveia-Neto, AS [1 ]
Neto, JAM
Sombra, ASB
机构
[1] Univ Fed Alagoas, Dept Fis, BR-57072970 Maceio, AL, Brazil
[2] Univ Fed Ceara, Dept Engn Mecan, BR-60455760 Fortaleza, Ceara, Brazil
[3] Univ Fed Ceara, Dept Fis, BR-60455760 Fortaleza, Ceara, Brazil
关键词
up-conversion; spectroscopy; rare-earth; glass; chalcogenide;
D O I
10.1016/S0022-2313(98)00002-7
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
Infrared to visible frequency up-conversion fluorescence spectroscopy in erbium-doped chalcogenide glass samples excited at 1.06 and 1.54 mu m, is experimentally investigated. For 1.06 mu m pumping, two-photon absorption and phonon-assisted energy transfer account for the excitation of the H-2(11/2), S-4(3/2) and F-4(9/2) emitting levels, yielding intense green emission at 530 and 555 nm and low intensity light at 670 nm, respectively. For excitation at 1.54 mu m, much higher up-conversion efficiencies were obtained with the red emission signal around 670 nm presenting higher intensity than the green fluorescence signals. At this excitation wavelength the population of the H-2(11/2), S-4(3/2) and F-4(9/2) excited-state emitting levels is accomplished via energy-transfer and phonon-assisted decays. Saturation of the up-conversion efficiency for 1.54 mu m pumping was also observed. (C) 1998 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:271 / 277
页数:7
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