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

页码：35 / 40

页数：6

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