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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 21 — Oct. 11, 2010
  • pp: 21804–21814

Optical methods for power measurement of terahertz radiation

Andreas Steiger, Berndt Gutschwager, Mathias Kehrt, Christian Monte, Ralf Müller, and Jörg Hollandt  »View Author Affiliations

Optics Express, Vol. 18, Issue 21, pp. 21804-21814 (2010)

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Precision power measurements of terahertz (THz) radiation are required to establish metrological applications in the THz spectral range. However, traceability to the International System of Units (SI) has been missing in the THz region in the past. The Physikalisch-Technische Bundesanstalt (PTB), as the national metrology institute of Germany, determines the spectral responsivity of detectors for THz radiation by using two complementary optical methods: source- and detector-based radiometry. Both approaches have been successfully prototyped, and a pyroelectric THz detector with a well-defined aperture is used to verify the consistency of the two independent calibration methods. These primary investigations led to the design of a new measurement facility for the determination of THz radiant power and the responsivity calibration of THz detectors traceable to the SI.

© 2010 OSA

OCIS Codes
(120.3930) Instrumentation, measurement, and metrology : Metrological instrumentation
(120.5630) Instrumentation, measurement, and metrology : Radiometry
(140.3070) Lasers and laser optics : Infrared and far-infrared lasers
(260.3090) Physical optics : Infrared, far
(040.2235) Detectors : Far infrared or terahertz
(110.6795) Imaging systems : Terahertz imaging

ToC Category:
Instrumentation, Measurement, and Metrology

Original Manuscript: July 9, 2010
Revised Manuscript: August 20, 2010
Manuscript Accepted: September 20, 2010
Published: September 29, 2010

Andreas Steiger, Berndt Gutschwager, Mathias Kehrt, Christian Monte, Ralf Müller, and Jörg Hollandt, "Optical methods for power measurement
of terahertz radiation," Opt. Express 18, 21804-21814 (2010)

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