TRANSMISSION OF TERAHERTZ RADIATION THROUGH ONE-DIMENSIONAL WIRE GRATINGS AT DIFFERENT ANGLES OF INCIDENCE [PDF]
Radio Physics and Radio Astronomy, 2020 Purpose: One-dimensional wire diffraction gratings, usually being mounted on ring frames, are often used in quasi-optical instruments under the construction of functional devices of different usage.
M. I. Dzyubenko +6 more
doaj +1 more source
High Resolution Lensless Terahertz Imaging and Ranging [PDF]
IEEE Access, 2019 In this paper, we propose a fast terahertz time-domain imaging method using a radar migration algorithm. We demonstrate high-resolution imaging in reflection without any collimating or focusing optics in the terahertz beam. In the proposed method, the sample is illuminated with a divergent terahertz beam, and the receiver collects both specular and ...
Dilyan Damyanov +10 more
openaire +4 more sources
Photonics, 2023 This article presents the main results and new plans for the development of receivers which are cooled cryogenically to deep cryogenic temperatures and used in optical and radio astronomy research at the Special Astrophysical Observatory of the Russian ...
Yurii Balega +17 more
doaj +1 more source
Design of 2D TeraHertz band-gap photonic waveguides using an accelerated integral equation technique [PDF]
, 2009 This paper describes the application of the buffered block forward backward (BBFB) method to the problem of modeling 2D terahertz (THz) photonic band gap waveguides at the frequency of 3 THz.
D. Bogusevschi +7 more
core +1 more source
Accurate determination of terahertz optical constants by vector network analyzer of Fabry-Perot response [PDF]
, 2013 This paper was published in Optics Letters and is made available as an electronic reprint with the permission of OSA. The paper can be found at the following URL on the OSA website: http://dx.doi.org/10.1364/OL.38.005438.
Wang, X +4 more
core +1 more source
Suspended Tunnel Junction Bolometers For Terahertz Range [PDF]
The Open Applied Physics Journal, 2012 Implementation of high resolution passive THz cameras operated at cryogenic temperatures of a few Kelvin benefits from a large number of pixels. At present, building a cryogenic multiplexed read-out circuit represents a challenging task. Here we propose and demonstrate broadband niobium-based tunnel junction bolometers operating in equilibrium regime ...
Timofeev, Andrey V. +6 more
openaire +1 more source
Liquid-metal-based metasurface for terahertz absorption material: Frequency-agile and wide-angle
APL Materials, 2017 Terahertz metasurface absorption materials, which absorb terahertz wave through subwavelength artificial structures, play a key role in terahertz wave shielding and stealth technology, etc.
Q. H. Song +13 more
doaj +1 more source
MILLIMETER AND TERAHERTZ WAVE SCATTERING DIAGRAMS IN RAINS [PDF]
Радиофизика и электроника, 2015 Detailed information about millimeter and terahertz wave scattering diagrams in rains is needed to develop millimeter and terahertz range radio engineering systems.
V. L. Kostina +2 more
doaj +1 more source
Application of terahertz spectroscopy to the characterization of biological samples using birefringence silicon grating [PDF]
, 2012 We present a device and method for performing vector transmission spectroscopy on biological specimens at terahertz (THz) frequencies. The device consists of artificial dielectric birefringence obtained from silicon microfluidic grating structures. The
Saha, S.C. +3 more
core +1 more source
Terahertz-time domain spectrometer with 90 dB peak dynamic range
, 2022 S.823-832Many time-domain terahertz applications require systems with high bandwidth, high signal-to-noise ratio and fast measurement speed. In this paper we present a terahertz time-domain spectrometer based on 1550 nm fiber laser technology and InGaAs ...
Deninger, A. +6 more
core +1 more source