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.
You can tell a lot about a material based on the type of light shining at it: Optical light illuminates a material's surface, while X-rays reveal its internal structures and infrared captures a material's radiating heat. ...
Optics & Photonics
16 hours ago
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Researchers have created an optical device that can generate both electric and magnetic vortex-ring-like light patterns. These structured light vortices, known as skyrmions, are highly stable and resistant to disturbances, ...
Condensed Matter
Jan 29, 2026
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75
Scientists from the National University of Singapore (NUS) have discovered that atomic-scale substitutional dopants in ultra-thin two-dimensional (2D) materials can act as stable quantum systems operating at terahertz (THz) ...
Nanophysics
Jan 21, 2026
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6
A research team affiliated with UNIST has unveiled a quantum device, capable of ultra-fast operation, a key step toward realizing technologies like 6G communications. This innovation overcomes a major hurdle that has long ...
Optics & Photonics
Jan 9, 2026
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61
Terahertz (THz) radiation, which occupies the frequency band between microwaves and infrared light, is essential in many next-generation applications, including high-speed wireless communications, chemical sensing, and advanced ...
Optics & Photonics
Jan 7, 2026
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48
Researchers at Lawrence Livermore National Laboratory (LLNL) have optimized and 3D-printed helix structures as optical materials for terahertz (THz) frequencies, a potential way to address a technology gap for next-generation ...
Condensed Matter
Dec 15, 2025
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30
A team from the Faculty of Physics and the Center for Quantum Optical Technologies at the Center of New Technologies, University of Warsaw has developed a new method for measuring elusive terahertz signals using a "quantum ...
Optics & Photonics
Dec 5, 2025
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106
Highspeed Internet, autonomous driving, the Internet of Things: data streams are proliferating at enormous speed. But classic radio technology is reaching its limits: the higher the data rate, the faster the signals need ...
Condensed Matter
Dec 4, 2025
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5
A prototype device that has demonstrated record-breaking longevity could help open up new frontiers in next-generation communications and computing technologies.
Optics & Photonics
Dec 3, 2025
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24
A new study led by the Aerospace Information Research Institute of the Chinese Academy of Sciences, along with their collaborators, has demonstrated that high pressure can significantly enhance and precisely tune terahertz ...
Condensed Matter
Dec 1, 2025
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