FE IONS IN PROTON-EXCHANGED LINBO3 WAVE-GUIDES

被引：15

作者：

OLIVARES, J

DIEGUEZ, E

LOPEZ, FJ

CABRERA, JM

机构：

[1] Departamento Fisica Aplicada C-IV, Universidad Autónoma de Madrid, Canto Blanco

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 06期

关键词：

D O I：

10.1063/1.107855

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The valence state of Fe in proton-exchanged LiNbO3 optical waveguides is studied by electron paramagnetic resonance (EPR) and loss measurements. Starting from a fully reduced substrate showing no Fe3+ EPR signal, the exchange process induces a strong Fe2+ --> Fe3+ conversion within the guiding region. A new EPR line is also observed to peak at 1650 G for B perpendicular to C-axis which is attributed to a new Fe3+ center. Losses (at 442 nm) are about forty times lower in the guide than in the reduced substrate.

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页码：624 / 626

页数：3

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