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This study aims to compare the random errors in optical constants like transmittance and absorption coefficients estimated from the sets of intensity spectra with dynamic range obtained from the noise floor in one spectrum measured by THz TDS for ZnTe samples. Results revealed that the error obtained from the noise floor and the statistical analysis simultaneously could show the frequency limit of...
We propose a novel measurement system that evaluates the frequency stability of high-precision oscillators such as atomic oscillators. This measurement system consists of a pair of high-speed analog-to-digital converters (ADCs) and digital-signal-processing (DSP) circuits on a field programmable gate array. The pair of high-speed ADCs simultaneously digitizes the two sinusoidal-voltage outputs from...
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