FERROELECTRIC PHASE-TRANSITION IN KTIOPO4 - AN OPTICAL 2ND-HARMONIC GENERATION STUDY

被引：10

作者：

CHU, DKT

HSIUNG, H

机构：

[1] Central Research and Development, Du Pont Company, Wilmington

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 15期

关键词：

D O I：

10.1063/1.108420

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The ferroelectric phase transition in a single-domain KTiOPO4 (KTP) crystal is studied with optical second-harmonic generation. The optical nonlinearity decreases continuously with increasing temperature and vanishes at the Curie point (T(C)=952-degrees-C) and above. Over a broad temperature range in the ferroelectric phase, the nonlinear optical coefficient d33 is-proportional-to (T(C)-T)0.5. This behavior is in good agreement with the Landau theory for second-order ferroelectric phase transitions.

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页码：1766 / 1768

页数：3

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