Self-organization in germanium silicate fibers and its role in second harmonic generation

被引：18

作者：

Antonyuk, BP ^{[1
]}

Antonyuk, VB ^{[1
]}

机构：

[1] Russian Acad Sci, Inst Spect, Troitsk 142092, Moscow Region, Russia

来源：

USPEKHI FIZICHESKIKH NAUK | 2001年 / 171卷 / 01期

关键词：

D O I：

10.3367/UFNr.0171.200101b.0061

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Based on Raman and hyper-Raman experiments and on direct green-light absorption measurements, excitations of a new type-charge transfer excitons-are found to exist in silicate fibers with addition of GeO2, whose self-organization (orientational ordering of dipole moments) leads to positive feedback on a static electric field. The strong electric field of 10(5) V/cm that results breaks the initial inversion symmetry and allows the second harmonic to be generated, which exists only at the medium preparation stage and switches off when a transition to the stationary state takes place.

引用

页码：61 / 78

页数：18

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