Absolute terahertz power measurement of a time-domain spectroscopy system

被引：59

作者：

Globisch, Bjoern ^{[1
]}

Dietz, Roman J. B. ^{[1
]}

Goebel, Thorsten ^{[1
]}

Schell, Martin ^{[1
]}

Bohmeyer, Werner ^{[2
]}

Mueller, Ralf ^{[3
]}

Steiger, Andreas ^{[3
]}

机构：

[1] HHI, Fraunhofer Inst Telecommun, D-10587 Berlin, Germany

[2] Sensor & Lasertechn SLT, D-15366 Neuenhagen, Germany

[3] Phys Tech Bundesanstalt PTB, D-10587 Berlin, Germany

来源：

OPTICS LETTERS | 2015年 / 40卷 / 15期

关键词：

DYNAMIC-RANGE; THZ; DETECTORS;

D O I：

10.1364/OL.40.003544

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We report on, to the best of our knowledge, the first absolute terahertz (THz) power measurement of a photoconductive emitter developed for time-domain spectroscopy (TDS). The broadband THz radiation emitted by a photoconductor optimized for the excitation with 1550-nm femtosecond pulses was measured by an ultrathin pyroelectric thin-film (UPTF) detector. We show that this detector has a spectrally flat transmission between 100 GHz and 5 THz due to special conductive electrodes on both sides of the UPTF. Its flat responsivity allows the calibration with a standard detector that is traceable to the International System of Units (SI) at the THz detector calibration facility of PTB. Absolute THz power in the range from below 1 mu W to above 0.1 mW was measured. (C) 2015 Optical Society of America

引用

页码：3544 / 3547

页数：4

共 11 条

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