SPECTROSCOPIC PROPERTIES OF CR4+-DOPED LIALO2

被引：22

作者：

KUCK, S

HARTUNG, S

PETERMANN, K

HUBER, G

机构：

[1] Institut für Laser-Physik, Universität Hamburg, Hamburg, D-20355

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1995年 / 61卷 / 01期

关键词：

D O I：

10.1007/BF01090969

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The spectroscopic properties of the new potential laser material Cr4+:LiAlO2 are presented. LiAlO2 exhibits tetrahedrally coordinated lattice sites only. Doping the crystal with chromium only as well as additional codoping with magnesium yields the incorporation of Cr4+ On the Al site. The Cr4+ emission extends from 1.1 to 1.7 mu m. In the case of doping just with chromium, the lifetime is single exponential in the whole temperature range between 12 and 550 K with a room-temperature lifetime of 29 mu s and a low-temperature lifetime of 95 mu s, which are the longest lifetimes observed until now for Cr4+ systems. Codoping with magnesium yields an additional Cr4+ center, which is clearly observed both in the decay dynamics and in the low-temperature emission spectrum.

引用

页码：33 / 36

页数：4