On the Fractal Absorption Spectra of Polymers in the Low-Frequency Part of the Terahertz Range
Sign Up to like & getrecommendations! Published in 2018 at "Radiophysics and Quantum Electronics"
DOI: 10.1007/s11141-018-9898-z
Abstract: The power dependence α(ν) ∝ νμ, where μ > 0 is the power exponent which is noninteger in the general case, is observed for amorphous polymers with a small absorption coefficient α in the low-frequency… read more here.
Keywords: absorption; frequency part; part terahertz; low frequency ... See more keywords
Terahertz-Range Polar Modes in Domain-Engineered BiFeO_{3}.
Sign Up to like & getrecommendations! Published in 2017 at "Physical review letters"
DOI: 10.1103/physrevlett.119.057604
Abstract: The dielectric permittivity and properties of electrically active lattice resonances in nanotwinned BiFeO_{3} crystals have been studied theoretically using an earlier established interatomic potential. The results suggest that an array of 71° domain walls with… read more here.
Keywords: polar modes; modes domain; domain engineered; bifeo ... See more keywords
A Low Bandwidth DFB Laser-Based Interrogator for Terahertz-Range Fiber Bragg Grating Sensors
Sign Up to like & getrecommendations! Published in 2017 at "IEEE Photonics Technology Letters"
DOI: 10.1109/lpt.2016.2647438
Abstract: This letter reports an all-electronic, low bandwidth swept frequency laser used to interrogate terahertz-range fiber Bragg gratings (THz FBGs) for distributed strain sensing applications. A distributed feedback laser with current injection modulation was employed as… read more here.
Keywords: fiber bragg; laser; low bandwidth; fiber ... See more keywords
Modeling of Periodic Ladder-Type Waveguide Systems in the Terahertz Range
Sign Up to like & getrecommendations! Published in 2018 at "Computational Mathematics and Mathematical Physics"
DOI: 10.1134/s0965542518060039
Abstract: A method for computing a perfectly conducting periodic rectangular waveguide of the ladder type is proposed. A field transformation matrix is constructed that relates the complex amplitudes of the field in waveguide cross sections separated… read more here.
Keywords: waveguide; ladder type; terahertz range;
Modeling Resonances of Dielectric Spheres in the Terahertz Range
Sign Up to like & getrecommendations! Published in 2018 at "Technical Physics Letters"
DOI: 10.1134/s1063785018080291
Abstract: We have studied the resonance properties of dielectric spheres with subwavelength dimensions in the optical and terahertz frequency range. Distribution of the electric field vector in a sphere irradiated by a plane polarized wave has… read more here.
Keywords: modeling resonances; dielectric spheres; range; resonances dielectric ... See more keywords
Digitally controlled chirped pulse laser for sub-terahertz-range fiber structure interrogation.
Sign Up to like & getrecommendations! Published in 2017 at "Optics letters"
DOI: 10.1364/ol.42.001007
Abstract: This Letter reports a sweep velocity-locked laser pulse generator controlled using a digital phase-locked loop (DPLL) circuit. This design is used for the interrogation of sub-terahertz-range fiber structures for sensing applications that require real-time data… read more here.
Keywords: fiber structure; sub terahertz; sub; range fiber ... See more keywords
BaTeMo2O9 crystals: optical properties and applications in the terahertz range
Sign Up to like & getrecommendations! Published in 2019 at "Optical Materials Express"
DOI: 10.1364/ome.9.004390
Abstract: The optical properties of the α/β-BaTeMo2O9 (α/β-BTM) crystal in the terahertz range were characterized by the terahertz time domain spectroscopy (TDS) system. Frequency-dependent refractive indices and absorption coefficients of two crystals were measured from 0.2… read more here.
Keywords: batemo2o9 crystals; properties applications; optical properties; crystals optical ... See more keywords