Kutz, J; Liebermeister, L; Vieweg, N; Wenzel, K; Kowjaas, R; Naftaly, M (2022) A Terahertz Fast-Sweep Optoelectronic Frequency-Domain Spectrometer: Calibration, Performance Tests, and Comparison with TDS and FDS. Applied Sciences, 12 (16). 8257

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Abstract

We report calibration and performance tests of a terahertz fast-sweep optoelectronic frequency-domain spectrometer designed for industrial applications, aimed at quantifying its performance specifications and demonstrating its suitability for envisaged usage. The frequency scale is calibrated using atmospheric water vapour lines and a silicon wafer etalon; the amplitude linearity is verified using a set of silicon plates. Instrument performance is tested by measuring transmission properties of a variety of representative samples and comparing with a time-domain spectrometer and a frequency-domain spectrometer.

Item Type:	Article
Keywords:	terahertz spectroscopy; fast-sweeping FDS; calibration; performance test; comparative measurements
Subjects:	Optical Radiation and Photonics > Materials and Appearance
Divisions:	Electromagnetic & Electrochemical Technologies
Identification number/DOI:	10.3390/app12168257
Last Modified:	25 Sep 2023 12:43
URI:	https://eprintspublications.npl.co.uk/id/eprint/9832