Results 21 to 30 of about 65,222 (316)

Terahertz deconvolution [PDF]

open access: yesOptics Express, 2012
The ability to retrieve information from different layers within a stratified sample using terahertz pulsed reflection imaging and spectroscopy has traditionally been resolution limited by the pulse width available. In this paper, a deconvolution algorithm is presented which circumvents this resolution limit, enabling deep sub-wavelength and sub-pulse ...
Gillian C. Walker   +7 more
openaire   +2 more sources

High-Bandwidth Coherent OFDM-Nyquist-TDM Transceiver With Low-Bandwidth Electronics

open access: yesIEEE Access, 2023
We present a broadband coherent orthogonal frequency-division multiplexing (OFDM) transceiver based on orthogonal sampling and low bandwidth electronic analog signal processing.
Younus Mandalawi   +4 more
doaj   +1 more source

Terahertz Quantum Cryptography [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2020
REVTeX. 14 pages. 5 figures.
Carlo Ottaviani   +6 more
openaire   +5 more sources

Experimental investigation of optically controlled topological transition in bismuth-mica structure

open access: yesScientific Reports, 2021
The hyperbolic materials are strongly anisotropic media with a permittivity/permeability tensor having diagonal components of different sign. They combine the properties of dielectric and metal-like media and are described with hyperbolic isofrequency ...
Anton Zaitsev   +11 more
doaj   +1 more source

Terahertz Characteristics of Magnetic Fluid Based on Microfluidic Technology

open access: yesInternational Journal of Optics, 2021
Magnetic fluid is a new functional material with both liquid fluidity and solid magnetism, which has important application value in medicine, biology, and so on. In this study, terahertz technology and microfluidic technology were combined to investigate
Xinyuan Zhao   +7 more
doaj   +1 more source

A Novel Method for the Enhancement of Composite Materials’ Terahertz Image Using Unsharp Masking and Guided Filtering Technology

open access: yesFrontiers in Physics, 2021
When terahertz imaging technology is used for the nondestructive testing of composite materials, the signal is often affected by the experimental environment and internal noise of the system, as well as the absorption and scattering effect of the tested ...
Zhilong Li   +8 more
doaj   +1 more source

Terahertz Absorption Properties of Two Solid Amino Acids and Their Aqueous Solutions

open access: yesInternational Journal of Optics, 2021
A new type of embedded cyclic olefin copolymer microfluidic chip was designed and combined with terahertz (THz) technology to study the effects of glycine and arginine on the THz wave absorption characteristics.
Ping Ye   +6 more
doaj   +1 more source

Subsurface Sub-terahertz and Terahertz Tomography

open access: yesPIERS Online, 2010
Development of millimeter and sub-millimeter wavelengths technologies is one of the most promising research areas, especially for applications in so called terahertz imaging. In the paper we consider a tomography approach for obtaining 3-D imaging in frequency range from 100 GHz up to 325 GHz.
Vertiy, A. A., Cetinkaya, H., Tekbas, M.
openaire   +2 more sources

Current tuned slotted Y‐branch laser for wafer thickness measurements with THz radiation

open access: yesElectronics Letters, 2021
A slotted Y‐branch laser diode that emits two spectral modes at a difference frequency of about 1 THz is investigated in the context of photonic based cw‐THz measurements.
N. Surkamp   +9 more
doaj   +1 more source

Terahertz single pixel imaging based on a Nipkow disk [PDF]

open access: yes, 2012
We describe a terahertz single pixel imaging system based on a Nipkow disk. Nipkow disks have been used for fast scanning imaging systems since the first experimental television was invented in 1926.
Saha, S., Cumming, D., Ma, Y., Grant, J.
core   +1 more source

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