Absolute Intensity Measurements of CW GHz and THz Radiation Using Electro-Optic Sampling

Author

Yuqiang Deng ; Fuser, Heiko ; Bieler, Mark

Author_Institution

Phys.-Tech. Bundesanstalt, Braunschweig, Germany

Volume

64

Issue

6

fYear

2015

fDate

42156

Firstpage

1734

Lastpage

1740

Abstract

We report on traceable and spatially resolved intensity measurements of continuous wave (CW) radiation at 100 GHz using laser-based electro-optic (EO) sampling. Traceability of the laser-based setup is achieved by comparison of the EO measurements with measurements using a calibrated radiometer. The uncertainty budget of the EO measurements is discussed in detail. Although we just perform intensity measurements at ~100 GHz, the EO setup can be used for characterization of CW sources over a very broad frequency range from a few gigahertz to ~2.5 THz.

Keywords

calibration; electro-optical devices; intensity measurement; measurement uncertainty; radiometers; sampling methods; terahertz wave imaging; CW GHz radiation; CW sources; EO measurement; THz radiation; absolute intensity measurement; frequency 100 GHz; laser-based electrooptic sampling; measurement uncertainty; radiometer calibration; Antenna measurements; Crystals; Frequency measurement; Measurement by laser beam; Measurement uncertainty; Radiometry; Uncertainty; Absolute intensity measurements; electro-optic (EO) sampling; terahertz (THz) metrology; terahertz (THz) metrology.;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/TIM.2014.2375692

Filename

6983632