2-PHOTON-RESONANT PHOTOINDUCED 2ND-HARMONIC GENERATION IN ER3+-DOPED GERMANO-ALUMINOSILICATE OPTICAL FIBERS PUMPED AT 1.319-MU-M

被引：15

作者：

HICKMANN, JM ^{[1
]}

GOUVEIA, EA ^{[1
]}

GOUVEIANETO, AS ^{[1
]}

DINI, DC ^{[1
]}

CELASCHI, S ^{[1
]}

机构：

[1] CTR PESQUISA & DESENVOLVIMENTO,BR-13400 CAMPINAS,SP,BRAZIL

来源：

OPTICS LETTERS | 1994年 / 19卷 / 21期

关键词：

D O I：

10.1364/OL.19.001726

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The growth of a two-photon-resonant photoinduced second-harmonic signal at 660 nm in Er3+-doped GeO2-Al2O3SiO2 single-mode optical fibers pumped by a Nd:YAG laser at 1.319 mu m is reported. Defect states in the band gap are optically excited through a resonant two-photon absorption process connecting the I-4(15/2)-F-4(9/2) energy levels of the erbium ions present in the fiber core. As a result a periodic chi((2)) grating is formed, and efficient second-harmonic generation takes place. For erbium-free GeO2-doped silica test fibers no second-harmonic signal has been detected, even after hours of seeded preparation process.

引用

页码：1726 / 1728

页数：3

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