Major improvements of the photorefractive and photovoltaic properties in potassium

被引：9

作者：

Evans, DR ^{[1
]}

Cook, G

Carns, JL

Saleh, MA

Basun, SA

Seim, JM

Mizell, GJ

机构：

[1] AF Res Lab, Wright Patterson AFB, OH 45433 USA

[2] Univ Technol Corp, Dayton, OH 45432 USA

[3] Anteon Corp, Dayton, OH 45431 USA

[4] UES Inc, Dayton, OH 45432 USA

[5] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia

[6] VLOC, New Port Richey, FL 34655 USA

来源：

OPTICS LETTERS | 2006年 / 31卷 / 01期

关键词：

D O I：

10.1364/OL.31.000089

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Optical and electrical measurements have been made on a new codoped potassium niobate crystal (KNbO3:Fe,Ag) that yields a significant enhancement of the photorefractive and photovoltaic effects when compared with the published results for singly doped potassium niobate crystals. The codoped Ag impurity enters the K site, rather than the typical Nb site, thus changing the local field in the lattice. It is believed that Fe perturbed by the Ag in the K site is responsible for an enhancement of the linear absorption and photocurrent, as well as a probable increase in the effective trap density. An enhanced trap density is likely the cause of the increased photorefractive counterpropagating two-beam coupling efficiency. (c) 2006 Optical Society of America.

引用

页码：89 / 91

页数：3

共 15 条

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