Studies of the temporal and spectral shape of terahertz pulses generated from photoconducting switches

被引：42

作者：

Ludwig, C

Kuhl, J

机构：

[1] Max-Planck-Inst. F. F., 70569 Stuttgart

来源：

APPLIED PHYSICS LETTERS | 1996年 / 69卷 / 09期

关键词：

D O I：

10.1063/1.117408

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We present a systematic investigation of the operation conditions of photoconductive switches fabricated on LT-GaAs as sources of THz pulses. We find a pronounced dependence of the THz pulse intensities and spectra on bias voltage and excitation density, which can be explained in terms of carrier dynamics and screening of the electric bias field. This study provides guidelines for the selection of the optimal operation parameters to obtain short THz pulses with a given geometry of the photoconductive switch. (C) 1996 American Institute of Physics.

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页码：1194 / 1196

页数：3

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