Title :
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
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.;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
DOI :
10.1109/TIM.2014.2375692
