ANOMALOUS REFRACTIVE-INDEX CHANGE AND RECOVERY OF ELECTROOPTIC COEFFICIENT R33 IN PROTON-EXCHANGED LITAO3 OPTICAL WAVE-GUIDES AFTER ANNEALING

被引：25

作者：

YUHARA, T

TADA, K

LI, YS

机构：

[1] Department of Electronic Engineering, University of Tokyo, Bunkyo-ku, Tokyo 113

来源：

JOURNAL OF APPLIED PHYSICS | 1992年 / 71卷 / 08期

关键词：

D O I：

10.1063/1.350868

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An increase of surface refractive index and a recovery of the r33 electro-optic coefficient have been observed for proton-exchanged LiTaO3 optical waveguides after annealing. On the basis of the results of nuclear reaction analysis, x-ray rocking curve analysis, and infrared-absorption spectroscopy, a qualitative model to explain these phenomena is proposed. The evolutions of the index profile and the r33 coefficient after proton exchange and annealing are considered to be caused by the movement of protons in the crystal lattice and the interdiffusion of protons and Li ions. The condition required for the fabrication of waveguides with good electro-optic performance is also shown.

引用

页码：3966 / 3974

页数：9

共 27 条

[1] FERROELECTRIC LITHIUM TANTALATE-1 . SINGLE CRYSTAL X-RAY DIFFRACTION STUDY AT 24 DEGREES C [J].