Mastering of the terahertz (THz) spectral range has motivated intensive studies aimed at developing applications of THz radiation. Spectroscopy is one of them, as molecular absorption lines corresponding to the vibrational and/or rotational frequencies belong to the THz range. Subwavelength sample thicknesses impose great difficulties to conventional THz spectroscopy, yet sensing of such samples is essential. Potentialities of thin film THz spectroscopy are considerably enlarged if a sample is probed by surface plasmon-polaritons (SPP) - the complex of an evanescent EM wave coupled to a wave...
Mastering of the terahertz (THz) spectral range has motivated intensive studies aimed at developing applications of THz radiation. Spectroscopy is one...