Efficient photoconductive terahertz source using line excitation

被引：37

作者：

Kim, JH ^{[1
]}

Polley, A ^{[1
]}

Ralph, SE ^{[1
]}

机构：

[1] Georgia Inst Technol, Sch Elect & Comp Engn, Atlanta, GA 30332 USA

来源：

OPTICS LETTERS | 2005年 / 30卷 / 18期

关键词：

D O I：

10.1364/OL.30.002490

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report significant improvement in terahertz (THz) power and efficiency using photoconductive sources by use of a spatially extended line source excitation and the trap enhanced field effect that occurs in sources made on semi-insulating GaAs. The combination of high electric fields and reduced screening effects allows 10 mu W of THz power to be generated with 14 mW of absorbed optical power, demonstrating nearly 0.1% optical-to-THz conversion efficiency. (c) 2005 Optical Society of America.

引用

页码：2490 / 2492

页数：3

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