ACOUSTIC AND OPTICAL-PROPERTIES OF THALLIUM ION-EXCHANGED KTIOPO4

被引：7

作者：

CHU, DKT

机构：

[1] Central Science and Engineering Laboratories, DuPont Company, Wilmington

来源：

APPLIED PHYSICS LETTERS | 1994年 / 65卷 / 16期

关键词：

Electron beam microscopy - Energy coupling loss - Interdigitated transducers - Optical index m line measurement - Potassium titanyl phosphates - Surface acoustic waves;

D O I：

10.1063/1.112839

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Both acoustic and optical properties of thallium ion-exchanged KTiOPO4 (Tl:KTP) plates were examined. Surface acoustic wave (SAW) velocity of the thallium-exchanged z-cut KTP possesses a reduction of 13% from the unchanged KTP. Temperature stability of SAW resonance (1/f0 df/dT) changed from almost-equal-to -81 ppm of an untreated z-cut KTP substrate to almost-equal-to -121 ppm of a z-cut Tl:KTP substrate. Large optical refractive indices changed at the Tl ion-exchanged surface were observed [DELTAn(eff)(TE)almost-equal-to0.3, DELTAn(eff)(TM)almost-equal-to0.22]. Tl ion concentration profile from the crystal surface into substrate was also studied using electron beam microscopy and the optical index m-line measurement. Tl-exchanged KTP, therefore, possesses both acoustic and optical waveguiding properties. (C) 1994 American Institute of Physics.

引用

页码：1989 / 1991

页数：3