Application of a Terahertz Multi-Frequency Radiation Source Based on Quantum-Cascade Lasers for Identification of Substances Basing on the Amplitude-Spectral Analysis of the Scattered Field

We demonstrate the possibility of using a multi-frequency terahertz source to identify substances basing on the analysis of relative amplitudes of the terahertz waves scattered by the object. The results of studying experimentally the scattering of quasi-monochromatic radiation generated by a two-fr...

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Bibliographic Details
Published in:Radiophysics and quantum electronics 2018-04, Vol.60 (11), p.877-888
Main Authors: Aksenov, V. N., Angeluts, A. A., Balakin, A. V., Maksimov, E. M., Ozheredov, I. A., Shkurinov, A. P.
Format: Article
Language:English
Subjects:
Absorption
Amplitudes
Astronomy
Astrophysics and Astroparticles
Hadrons
Heavy Ions
Lasers
Mathematical and Computational Physics
Monochromatic radiation
Nuclear Physics
Observations and Techniques
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Quantum cascade lasers
Quantum Optics
Radiation (Physics)
Terahertz frequencies
Theoretical
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Summary:We demonstrate the possibility of using a multi-frequency terahertz source to identify substances basing on the analysis of relative amplitudes of the terahertz waves scattered by the object. The results of studying experimentally the scattering of quasi-monochromatic radiation generated by a two-frequency terahertz quantum-cascade laser by the surface of the samples containing inclusions of absorbing substances are presented. It is shown that the spectral features of absorption of these substances within the terahertz frequency range manifest themselves in variations of the amplitudes of the waves at frequencies of 3.0 and 3.7 THz, which are scattered by the samples under consideration.
ISSN:0033-8443
1573-9120
DOI:10.1007/s11141-018-9854-y