Results 21 to 30 of about 81,306 (310)

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

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

Terahertz quantum sensing [PDF]

open access: yesScience Advances, 2020
Quantum sensing enables the measurement of sample properties in the terahertz frequency range by detecting visible photons.
Mirco Kutas   +5 more
openaire   +3 more sources

Intracavity terahertz optical parametric oscillators [PDF]

open access: yes, 2011
This thesis describes the design and implementation of several novel, nanosecond pulsed, intracavity optical parametric oscillators for the generation of terahertz radiation.
Walsh, David A.
core   +2 more sources

Terahertz sources [PDF]

open access: yesJournal of Biomedical Optics, 2011
We present an overview and history of terahertz (THz) sources for readers of the biomedical and optical community for applications in physics, biology, chemistry, medicine, imaging, and spectroscopy. THz low-frequency vibrational modes are involved in many biological, chemical, and solid state physical processes.
Pavel, Shumyatsky, Robert R, Alfano
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

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

Multi-resonant tunable absorber of terahertz metamaterial based on GaAs and VO2

open access: yesResults in Physics, 2023
Based on the fact that the conductivity of photosensitive semiconductors can be regulated by external pump light, a metamaterial absorber with single-band and dual-band switchable in terahertz region is designed by replacing gallium arsenide (GaAs ...
Tingting Yuan   +4 more
doaj   +1 more source

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