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terahertz News
Terahertz Technology Is Heating Up
ZÜRICH, Aug. 5, 2019 — Researchers at ETH Zurich have reported the highest operating temperature of a quantum cascade laser, which eliminates a major barrier in the practical implementation of the technology. While not quite T-shirt temperature, the team from the Jérôme Faist group at the Institute for Quantum Electronics have reported an operational temperature of 210 K (-63° C), which is high enough to eliminate the need for cryogenic coolants. Instead, the team utilized a thermoelectric cooler, which is much more...
Researchers Confirm Strong Magneto-Optical Resonance in Graphene
GENEVA, July 22, 2019 — The interaction between graphene and light suggests that graphene could be used to control infrared (IR) and terahertz (THz) waves. Researchers from the University of Geneva (UNIGE) and the University of Manchester have demonstrated an efficient way...
Superfast Computing Method Uses Terahertz Light Pulses
LANCASTER, England, May 24, 2019 — An international team has discovered how to perform superfast data processing using light pulses instead of electricity. The team used magnets to create faster data processing speeds without incurring high energy costs. Traditionally in magnetic...
Directed Currents Generated at THz Frequencies Are Higher Than Current Clock Rates
BERLIN, Jan. 16, 2019 — Researchers at the Max Born Institute (MBI) generated directed electric currents at terahertz (THz) frequencies from light absorbed in semiconductor crystals. According to the researchers, this is a much higher frequency than the clock rates of...
New High-Power, Tunable THz Laser Is Slated for Space Mission
CAMBRIDGE, Mass., Dec. 20, 2018 — A new terahertz (THz) laser designed by researchers at Massachusetts Institute of Technology (MIT) has demonstrated high constant power, tight beam pattern, and broad electric frequency tuning — three performance metrics that could mean less noise...
Time-Resolved Technique Could Provide High Resolution for THz Imaging
BRIGHTON, England, Aug. 30, 2018 — Using a single-pixel camera operating at THz frequencies, researchers at the University of Sussex have discovered a way to capture with a high degree of accuracy not just the shape of an object, but also its chemical composition. The technique uses...
QCL, THz Frequency Combs May Become the Future of Wi-Fi
CAMBRIDGE, Mass., Aug. 13, 2018 — Wi-Fi and cellular data traffic are increasing exponentially, but unless the capacity of wireless links can be increased, all that traffic is bound to lead to bottlenecks. Upcoming 5G networks are a temporary fix. Researchers are focusing on...
THz Imagers Achieve Flexibility Using Tunable Carbon Nanotubes
TOKYO, July 3, 2018 — Researchers have developed flexible, bendable terahertz (THz) imagers based on chemically adjustable semiconducting carbon nanotube (CNT) films. The CNT films can be tuned to maximize THz detector performance. Flexible THz imagers could expand the...
Plasmonic Antennas Could Deliver Ultrafast Pulses for THz Electronics
MUNICH, Germany, June 28, 2018 — In an experiment that combined the advantages of femtosecond nanophotonics with on-chip communications, researchers generated ultrashort electric pulses on a chip using metal structures (i.e., antennas) only a few nanometers in size, then ran the...
Terahertz Spectroscopy on the Cutting Edge of Material Testing
Jun 27, 2018 — Just a few years ago, the application of terahertz radiation seemed obscure at best. If experts were asked for killer applications, few could be named. In 2018, however, terahertz measuring instruments are showing significant market potential....
Terahertz Frequency Pulses Uncover Hidden State of Matter
AMES, Iowa, June 6, 2018 — Researchers have used ultrafast photonics to visualize electrons interacting as a hidden state of matter in a superconductive alloy. When fully understood and tuned, this state of matter could be used for faster, heat-free quantum computing,...
Terahertz 3D Spectroscopy Boosts Imaging Applications
Apr 19, 2018 — Terahertz imaging is a promising technique for noncontact, noninvasive, nonionizing 3D spectroscopy. Terahertz rays, located between microwave and IR on the electromagnetic spectrum from approximately 0.06 THz (60 GHz) to 10 THz, are capable of...
Enhanced Magnetic Dipole Source, Glass Fiber Tailor Radiation in THz Region
SYDNEY and ADELAIDE, Australia, Feb. 12, 2018 — Researchers have demonstrated an enhanced magnetic dipole source in the terahertz frequency range, a necessary step to harness the magnetic nature of light for terahertz devices. Collaborating scientists from the University of New South Wales, the...
Multiwall Carbon Nanotube Rectennas Get an Efficiency Boost
ATLANTA, Jan. 29, 2018 — The research team that announced the first optical rectenna in 2015 reports that it has improved multiwall carbon nanotube (MWCNT) rectennas by creating and optimizing new diode structures that allow optical rectification with air-stable devices....
THz Imaging Uncovers Secrets of 17th-Century Masterpiece
Nov 30, 2017 — There has long been an air of mystery surrounding paintings created prior to the 18th century and how the artists prepared their canvases, applied undercoats and eventually created their masterpieces. Researchers from Georgia Tech-Lorraine, a campus...
Uncharted Waters
ROCHESTER, N.Y., Oct. 4, 2017 — As the saying goes, "difficult is done at once; the impossible takes a little longer." It took Xi-Cheng Zhang, an optics professor at the University of Rochester, nearly a decade to generate a terahertz wave from water — an achievement that...
Graphene-Based Absorbers Could Enable Ultrafast Lasers in THz Range
MODENA, Italy, Sept. 15, 2017 — A terahertz (THz) saturable absorber has been created using printable graphene inks produced by liquid phase exfoliation (LPE) and deposited by transfer coating and ink jet printing. A THz saturable absorber, which decreases the absorption of light...
Metasurface-Coated Waveguides Reduce Crosstalk
STATE COLLEGE, Pa., Sept. 5, 2017 — Engineers have developed a conformal metasurface coating that can simultaneously control diverse optical properties of dielectric waveguides, including mode confinement, polarization, scattering signature and crosstalk. The two-layer coating can...
Data Transmission via Terahertz Multiplexer
PROVIDENCE, R.I., Aug. 14, 2017 — A method for multiplexing data — the ability to send multiple signals through a single channel of a voice or data communication system — carried on terahertz waves and high-frequency radiation may enable the next generation of ultra-high bandwidth...
Tiny Terahertz Laser May Aid Industrial Imaging and Chemical Detection
CAMBRIDGE, Mass., Aug. 11, 2017 — A new terahertz design that can be etched on microchips boosts the power output of chip-mounted terahertz lasers by eighty percent. The novel design shows promise for future industrial imaging and chemical detection applications. The standard method...
Highly Efficient Beamsplitter for THz Uses Artificial Dielectrics
PROVIDENCE, R.I., July 24, 2017 — A novel technique for manipulating the polarization of light at terahertz (THz) frequencies uses stacks of closely-spaced steel plates to make a polarizing beamsplitter (PBS). Each pair of plates forms a parallel-plate waveguide. When THz light is...
Quantum Effect Changes Direction of Light Waves
VIENNA, May 26, 2017 — In a variation of the magneto-optical effect, special materials called “topological insulators” (TI) demonstrated the ability to switch the direction of a light wave in clearly defined quantum leaps rather than continually. This...
Terahertz Analysis Helps Target Measures for Controlling Pollution
BEIJING, March 24, 2017 — A combination of terahertz (THz) absorption and 2D correlation spectroscopy (2DCOS) has been used to identify the concentration and pollution sources of PM2.5 (particulate matter less than 2.5 µ in diameter) in the Beijing-Tianjing-Hebei...
Terahertz Emitter Addresses Obstacles to Use for Noninvasive Industrial Inspections
SINGAPORE, Feb. 8, 2017 — High performance and low-power driven terahertz (THz) emitters could possibly address critical challenges facing industrial applications of this new technology. Researchers from the National University of Singapore (NUS) have made a major...
Terahertz Scanning Device Developed for Non-Destructive Inspections
TOKYO, Nov. 28, 2016 — Most terahertz imaging systems are very bulky — think body scanners at airports that rotate 360 degrees. But a new portable and wearable terahertz scanning device using arrays of carbon nanotubes (CNT) could make it easier to perform...
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May 2024
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