High-speed ASOPS based THz time-domain spectrometer

被引：0

作者：

Bartels, Albrecht ^{[1
]}

Klatt, Gregor ^{[1
]}

Gebs, Raphael ^{[1
]}

Janke, Christof ^{[1
]}

Dekorsy, Thomas ^{[1
]}

机构：

[1] Univ Konstanz, Ctr Appl Photon, D-7750 Constance, Germany

来源：

2009 34TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER, AND TERAHERTZ WAVES, VOLS 1 AND 2 | 2009年

关键词：

D O I：

暂无

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

High-speed asynchronous optical sampling with two offset-locked Ti:sapphire femtosecond oscillators permits time-domain THz spectroscopy with almost 7 THz bandwidth at 1 GHz resolution. The system operates at 2 kHz scan rate without moving mechanical parts. The mean fractional frequency error of absorption lines in a measured water vapor absorption spectrum with respect to the data published in the HITRAN database is 5.9x10(-5), the maximum fractional error is 2.1x10(-4). The system's potential for rapid sensing applications is demonstrated by reading out a frequency selective surface sensor with an uncertainty of 210 MHz within only 2 s of acquisition time.

引用

页码：839 / 841

页数：3

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