Abstract
Fourier transform spectroscopy (FTS) is a spectroscopic technique where spectra are obtained by measuring a temporal waveform or interferogram of electromagnetic radiation, or other types of radiation, and calculating its Fourier transform (FT). FTS possesses inherent advantages over conventional dispersive spectrometers, such as a high signal-to-noise ratio, simultaneous acquisition of signals in a broad spectrum, and versatility for different radiation sources. Therefore, various types of FTS, including terahertz (THz) time-domain spectroscopy (THz-TDS), have been widely used in fields of research and industry.
© 2016 Japan Society of Applied Physics, Optical Society of America
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