DEPENDENCE OF LATTICE-CONSTANT DEVIATION AND REFRACTIVE-INDEX ON PROTON CONCENTRATION IN PROTON-EXCHANGED OPTICAL WAVE-GUIDES ON A SINGLE-CRYSTAL OF LINBO3

被引：19

作者：

ITO, K ^{[1
]}

KAWAMOTO, K ^{[1
]}

机构：

[1] HITACHI LTD,PROD ENGN RES LAB,TOTSUKA KU,YOKOHAMA 244,JAPAN

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 1992年 / 31卷 / 12A期

关键词：

PROTON EXCHANGE; LINBO3; NUCLEAR REACTION ANALYSIS; X-RAY DIFFRACTION; LATTICE CONSTANT; REFRACTIVE INDEX;

D O I：

10.1143/JJAP.31.3882

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The lattice constant deviation and refractive index change of proton-exchanged optical waveguides fabricated on a single crystal of LiNbO3 are discussed in relation to the proton concentration. The exchange rate x of Li+ with H+ has been determined by nuclear reaction analysis and the lattice constant deviation has been measured by means of the double crystal X-ray diffraction method. The value of x in the samples proton-exchanged with the benzoic acid/lithium benzoate melts is in the range of 0.55<x<0.75. After annealing in air, x decreases with increasing annealing time. The lattice constant deviation is proportional to x in the range of x<0.55, while it is almost constant in the range of x>0.55. The dependence of the refractive index change on x is very similar to that of the lattice constant deviation. Reasons for the refractive index change caused by proton exchange are discussed.

引用

页码：3882 / 3887

页数：6