Generation and characterization of terahertz pulse trains from biased, large-aperture photoconductors

被引：40

作者：

Siders, CW ^{[1
]}

Siders, JLW

Taylor, AJ

Park, SG

Melloch, MR

Weiner, AM

机构：

[1] Univ Calif Los Alamos Natl Lab, Div Mat Sci & Technol, Los Alamos, NM 87545 USA

[2] Purdue Univ, Sch Elect & Comp Engn, W Lafayette, IN 47907 USA

来源：

OPTICS LETTERS | 1999年 / 24卷 / 04期

关键词：

D O I：

10.1364/OL.24.000241

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

The saturation properties of terahertz emission from biased, large-aperture photoconductors excited by trains of amplified femtosecond optical pulses are presented. A direct comparison is made of the multiple-pulse saturation properties of terahertz emission from semi-insulating GaAs and low-temperature-grown GaAs emitters with different carrier lifetimes. When the carrier lifetime is less than or comparable with the interpulse spacing, a significant enhancement of the narrow-band terahertz output is observed. The enhancement is not observed for emitters with long carrier lifetimes, consistent with the results of a previously derived saturation theory [Opt. Lett. 18, 1340 (1993)]. (C) 1999 Optical Society of America. OCIS codes: 320.7160, 320.7080, 320.7100, 320.7130.

引用

页码：241 / 243

页数：3

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