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In many THz Time Domain Spectroscopy configurations, the separate acquisition of background and sample measurements have significant impact on data quality due to the need to perform subsequent measurements as well as the change in beam coupling geometry due to the removal of the sample in the reference measurement. In this short paper, we report on the design and build of a dual-polarization TDS...
In both Fourier Transform Spectroscopy and Time-Domain Spectroscopy in the THz frequency region, many of the measurements are performed on samples of a single material and given known thickness to either characterize a material sample, characterize a reference substrate of material for a subsequent measurement, or where superior data on that sample exists, calibrate the system accurately. In this...
Terahertz transmission spectra of methylparaben, ethylparaben, propyl-p-hydroxybenzoate and butyl-p-hydroxybenzoate were measured by terahertz time-domain spectroscopy (THz-TDS) at 7.8 K. While it was difficult to observe the THz absorbance peaks of these esters at room temperature (294.3 K), they could be observed at 7.8 K. The THz absorbance peaks of these materials were at a higher frequency at...
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