Terahertz techniques encompass a set of experimental and analytical methods that generate, manipulate, and detect electromagnetic radiation in the terahertz (THz) frequency range, typically 0.1–10 THz, for probing material properties and dynamical processes. Core approaches include time-domain spectroscopy using ultrafast lasers and nonlinear crystals or photoconductive antennas, frequency-domain spectroscopy with continuous-wave THz sources, and imaging modalities exploiting THz transmission, reflection, or near-field interactions. These techniques enable characterization of low-energy excitations, carrier dynamics, vibrational and rotational modes, and dielectric responses in solids, liquids, gases, and biological tissues, often with depth resolution and spectroscopic contrast.
Recent advances in electronics and optics have opened new possibilities for terahertz (THz) waves—an invisible type of light that falls between infrared light and microwaves on the spectrum. The use of THz scattering for ...
Optics & Photonics
Jun 9, 2025
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In a world increasingly driven by high-speed communication and low-power electronics, a team of researchers from the National University of Singapore (NUS) and Singapore University of Technology and Design (SUTD) has proposed ...
Nanophysics
May 29, 2025
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A simple tweak to the usual setup is all that is needed to enhance a spectroscopy technique that uses waves in the terahertz region to probe samples, RIKEN physicists have discovered. The findings are published in the journal ...
Optics & Photonics
Apr 11, 2025
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Researchers at The University of Manchester's National Graphene Institute have introduced a new class of reconfigurable intelligent surfaces capable of dynamically shaping terahertz (THz) and millimeter (mm) waves. Detailed ...
Optics & Photonics
Mar 27, 2025
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For the first time, researchers have shown that terahertz imaging can be used to visualize internal details of the mouse cochlea with micron-level spatial resolution. The non-invasive method could open new possibilities for ...
Optics & Photonics
Mar 27, 2025
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A research team affiliated with the Nano Optics Group within the Department of Physics at UNIST has announced the successful implementation of a plasmonic structure capable of precisely adjusting nanometer-sized gaps in response ...
Nanophysics
Mar 25, 2025
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Terahertz (THz) waves are located between microwaves and infrared light in the electromagnetic spectrum. They can pass through many materials without causing damage, making them useful for security scanning, medical imaging, ...
Condensed Matter
Mar 24, 2025
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Quantum computers, devices that process information leveraging quantum mechanical effects, could outperform classical computers in some complex optimization and computational tasks. However, before these systems can be adopted ...
Scientists at Yokohama National University, in collaboration with RIKEN and other institutions in Japan and Korea, have made an important discovery about how electrons move and behave in molecules. This discovery could potentially ...
Condensed Matter
Mar 6, 2025
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Terahertz radiation (THz), electromagnetic radiation with frequencies ranging from 0.1 and 10 THz, is central to the functioning of various technologies, including imaging, sensing and spectroscopy tools. While THz radiation ...
