AUGER UP-CONVERSION LOSSES IN ND-DOPED LASER GLASSES

被引：57

作者：

PAYNE, SA

WILKE, GD

SMITH, LK

KRUPKE, WF

机构：

[1] University of California, Lawrence Livermore National Laboratory, Livermore, CA 94550

来源：

OPTICS COMMUNICATIONS | 1994年 / 111卷 / 3-4期

关键词：

D O I：

10.1016/0030-4018(94)90463-4

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We have measured the Auger upconversion constant, gamma, of Nd3+ ions in phosphate, silicate, and fluoride glasses. The Auger process involves two Nd3+ ions initially in the 4F3/2 metastable state that interact such that one ion is promoted to a higher lying state, while the other is forced to the 4I(J) levels of the ground state. gamma values ranging from 2.6 to 8.1 x 10(-17) cm3 s-1 were measured, depending on the host medium and neodymium concentration. The product of the emission lifetime and the Auger coefficient was found to be in the range of gammatau = (1-2) x 10(-20) cm3 for the materials investigated. This suggests that Auger upconversion is an important problem for excited state densities approaching (5-10)x10(19) cm-3.

引用

页码：263 / 268

页数：6