OSCILLATOR-STRENGTHS OF UV ABSORPTION AND LUMINESCENCE FOR OXYGEN-DEFICIENT CENTERS IN GERMANOSILICATE FIBERS

被引：18

作者：

BAGRATASHVILI, VN ^{[1
]}

POPOV, VK ^{[1
]}

TSYPINA, SI ^{[1
]}

CHERNOV, PV ^{[1
]}

RYBALTOVSKII, AO ^{[1
]}

机构：

[1] MOSCOW MV LOMONOSOV STATE UNIV,INST SCI RES NUCL PHYS,MOSCOW 119899,RUSSIA

来源：

OPTICS LETTERS | 1995年 / 20卷 / 15期

关键词：

D O I：

10.1364/OL.20.001619

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The time-resolved measurements of triplet and singlet luminescence from germanium oxygen-deficient centers (GODC's) in germanosilicate fibers excited by short UV laser pulses are used to determine the cross section of UV absorption of GODC's at lambda = 248 nm (sigma = 5 x 10(-18) cm(2)), the oscillator strength of UV absorption (f(abs) = 0.027), and UV luminescence (f(lum) = 0.031). The basis for these measurements is the direct luminescence detection of lifetimes of electronically excited states of GODC's, the saturation of triplet luminescence signals, and the analysis of the rate equations that govern the laser photoexcitation and relaxation processes in GODC's. (C) 1995 Optical Society of America.

引用

页码：1619 / 1621

页数：3

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