Photoluminescence studies in Sc:CaF2 and Sc,Ce:CaF2 crystals

被引：10
|
作者：
Mirov, SB
Dergachev, AY
Sibley, WA
Esterowitz, L
Basiev, TT
Sigachev, VB
Papashvili, AG
机构：
[1] UNIV ALABAMA,DEPT PHYS,BIRMINGHAM,AL 35294
[2] USN,RES LAB,WASHINGTON,DC 20375
[3] RUSSIAN ACAD SCI,INST GEN PHYS,MOSCOW 117924,RUSSIA
来源：
JOURNAL OF LUMINESCENCE | 1996年 / 69卷 / 01期
关键词：
spectroscopy; luminescence; solid state laser materials;
D O I：
10.1016/0022-2313(96)00083-X
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Stokes and anti-Stokes W-visible luminescence was investigated in gamma-irradiated Sc and Sc-Ce doped CaF2 crystals. Wideband Stokes luminescence under laser or CW lamp excitation was measured: (1) at 380 nm (luminescence decay time tau similar to 17 mu S) in Sc:CaF2 and Sc,Ce:CaF2 crystals, attributed to SC2+ ions and (2) at 300 nm (tau similar to 40 ns) in Sc,Ce:CaF2 crystals, due to Sc-Ce aggregate centers. Anti-Stokes luminescence in the 250-350 nm spectral range with a 1 mu s lifetime can be explained by exciton luminescence.
引用
收藏
页码：35 / 40
页数：6
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