Uncertainty in terahertz time-domain spectroscopy measurement
JOSA B, Vol. 25, Issue 6, pp. 1059-1072 (2008)
http://dx.doi.org/10.1364/JOSAB.25.001059
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Abstract
Measurements of optical constants at terahertz—or T-ray—frequencies have been performed extensively using terahertz time-domain spectroscopy (THz-TDS). Spectrometers, together with physical models explaining the interaction between a sample and T-ray radiation, are progressively being developed. Nevertheless, measurement errors in the optical constants, so far, have not been systematically analyzed. This situation calls for a comprehensive analysis of measurement uncertainty in THz-TDS systems. The sources of error existing in a terahertz spectrometer and throughout the parameter estimation process are identified. The analysis herein quantifies the impact of each source on the output optical constants. The resulting analytical model is evaluated against experimental THz-TDS data.
© 2008 Optical Society of America
OCIS Codes
(000.2170) General : Equipment and techniques
(120.4530) Instrumentation, measurement, and metrology : Optical constants
(300.6495) Spectroscopy : Spectroscopy, teraherz
ToC Category:
THz Domain
History
Original Manuscript: January 14, 2008
Revised Manuscript: April 8, 2008
Manuscript Accepted: April 11, 2008
Published: May 28, 2008
Citation
Withawat Withayachumnankul, Bernd M. Fischer, Hungyen Lin, and Derek Abbott, "Uncertainty in terahertz time-domain spectroscopy measurement," J. Opt. Soc. Am. B 25, 1059-1072 (2008)
http://www.opticsinfobase.org/josab/abstract.cfm?URI=josab-25-6-1059
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