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We demonstrate a terahertz time-domain technique for measuring thickness, moisture and basis weight of paper. We validate our technique for a sample compressed to different thicknesses and establish uncertainty limits using Monte Carlo simulations.
To develop the spectroscopic Stokes polarimetry based on the Fourier transform spectrometer, two methods are proposed for the signal-point and full-field measurements, respectively. The validity of the proposed methods is demonstrated both numerically and experimentally.
Optical coherence tomography (OCT) is a non-invasive and non-contact technique to measure cross-sectional structural images of samples at micrometer resolution. Functional extensions of OCT has been developed to enhance contrast based on physical properties, such as absorption spectrum and elasticity or stiffness. This research develops a multi-functional optical coherence tomography by combining...
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