Optical spectra of VTE LiNbO3:Cr

被引：2
作者：
Skvortsov, A
Trepakov, V
Kapphan, S
Vorlicek, V
Jastrabik, L
机构：
[1] ASCR, Inst Phys, Prague 18040 8, Czech Republic
[2] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[3] Univ Osnabruck, FB Phys, D-49069 Osnabruck, Germany
来源：
RADIATION EFFECTS AND DEFECTS IN SOLIDS | 1999年 / 150卷 / 1-4期
关键词：
LiNbO3; Cr3+; luminescence; transition metals impurities;
D O I：
10.1080/10420159908226246
中图分类号：
TL [原子能技术]; O571 [原子核物理学];
学科分类号：
0827 ; 082701 ;
摘要：
The luminescence in the region 13 350 13 900 cm(-1) of E-2 --> (4)A(2) transitions of Cr3+ are studied at 5, 50 and 80 K with congruent and stoichiometric LiNbO3 : Cr (0.1 mol%) specimens are obtained using the Vapour Transport Equilibrium (VTE) procedure. Twelve emission lines were observed in stoichiometric crystals and 7 in congruent ones, Emission lines in VTE specimens vs, congruent ones shift a little to lower energies and linewidth decreases by about factor 2.5. The emission lines peaking at 13 420 and 13 540 cm(-1) seem to be depressed in congruent specimens and the emission line at 13 613 cm(-1) seems to be very weak in stiochiometric ones. Tn region 5-80 K; luminescence intensity decreases with temperature in congruent specimens, but increases VTE ones. A possible origin of the emission lines observed is discussed.
引用
收藏
页码：293 / 297
页数：5
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