Results 31 to 40 of about 31,529 (265)
Polarization-maintaining reflection-mode THz time-domain spectroscopy of a polyimide based ultra-thin narrow-band metamaterial absorber [PDF]
, 2018 This paper reports the design, the microfabrication and the experimental characterization of an ultra-thin narrow-band metamaterial absorber at terahertz frequencies.
Astorino, Maria Denise +8 more
core +2 more sources
Thermographic non-destructive evaluation for natural fiber-reinforced composite laminates [PDF]
, 2018 Natural fibers, including mineral and plant fibers, are increasingly used for polymer composite materials due to their low environmental impact. In this paper, thermographic non-destructive inspection techniques were used to evaluate and characterize ...
Avdelidis, Nicolas P. +7 more
core +3 more sources
Advanced Photonics Research, 2023 Photonic crystal (PhC) can be accurately designed to generate nontrivial and trivial modes, that is, edge states (ES)/corner states (CS) and cavity modes, respectively. The coupled cavity–waveguide system designed by PhC provides a chip‐scale platform to
Xudong Zhan +5 more
doaj +1 more source
Nanomaterials, 2020 We applied the harmonic oscillator model combined with the transfer matrix method to study the polarization conversion for transmitted waves in metallic grating/plasmon-excitation layer/metallic grating structure in the terahertz (THz) region.
Anqi Yu +8 more
doaj +1 more source
Attenuated internal reflection terahertz imaging [PDF]
Optics Letters, 2013 We present a terahertz (THz) imaging technique based on attenuated internal reflection, which is ideally suited for the analysis of liquid and biological samples. Inserted in a THz time-domain system, and using a high-resistivity low loss silicon prism to couple the THz wave into the sample, the detection scheme is based on the relative differential ...
Wojdyla, Antoine, Gallot, Guilhem
openaire +3 more sources
Cladding‐Free Antiresonance in Tubular Structures
Advanced Photonics Research, 2022 Antiresonance reflection (ARR) effectively turns tubular structures into functional devices ranging from waveguides to spectrometers and sensors, thus attracting a growing number of interests in recent years.
Jiayu Zhao +7 more
doaj +1 more source
Nanomaterials, 2022 Due to its high sensitivity and because it does not rely on the magneto-optical response, terahertz (THz) emission spectroscopy has been used as a powerful time-resolved tool for investigating ultrafast demagnetization and spin current dynamics in ...
Zhangshun Li +8 more
doaj +1 more source
Optimization of photomixers and antennas for continuous-wave terahertz emission [PDF]
, 2005 We have studied terahertz emission from interdigitated finger photomixers coupled to planar antenna structures. Using both pulsed and continuous-wave excitation, polarization measurements reveal that the antenna design dominates the properties of the
Baker, C. +7 more
core +1 more source
Aspheric lenses for terahertz imaging
Optics Express, 2008 We present novel designs for aspheric lenses used in terahertz (THz) imaging. As different surfaces result in different beam shaping properties and in different losses from reflection and absorption, the resultant imaging resolution (i.e. the focal spot size) depends critically on the design approach.
Lo, Yat, Leonhardt, Rainer
openaire +3 more sources
CMOS-Compatible Room-Temperature Rectifier Toward Terahertz Radiation Detection [PDF]
, 2016 In this paper, we present a new rectifying device, compatible with the technology of CMOS image sensors, suitable for implementing a direct-conversion detector operating at room temperature for operation at up to terahertz frequencies.
De Amicis, Giovanni +5 more
core +1 more source