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Hamamatsu Photonics Announces the World's First Quantum Cascade Laser (QCL) Module with a Tunable Frequency Range from 0.42 to 2 THz Labmate Online

Hamamatsu’s breakthrough was achieved by analysing the principle governing the generation of terahertz waves, which enhance the QCL’s output power and the configuration of the highly efficient external cavity, while using our advanced optical design technology. Click to read more. ....

Communications Rd Promotion Program , Japanese Ministry Of Internal Affairs , Optica Publishing Group , Photonics Research , Photonics Research , Japanese Ministry , Internal Affairs , Strategic Information ,

"Characteristic Spectral Features of Terra Preta (TP) in the 5–15 Terah" by Lucia M. Lepodise, Roger A. Lewis et al.

Terra preta is a fertile anthropogenic soil found in the Amazon basin. One of the most significant differences between the terra preta and surrounding soils is that terra preta is rich in aromatic carbons. Previous infrared investigations of terra preta were reported at energies above 1000 cm−1 where many other forms of carbon also have absorption lines. No measurements have been reported below 800 cm−1, where many absorptions associated with aromatic carbons occur in the absence of aliphatic carbon lines. We employ Fourier transform infrared spectroscopy between 150 cm−1 and 500 cm−1. A comparison was made between the spectra of terra preta, several pure aromatic compounds, organic fertilizers developed to replicate terra preta and several Australian soils, some of which containing char from bushfires. The spectra in the 150–500 cm−1 range were very similar between terra preta and the organic fertilizers, while they were very different for the natural soils. These findings ....

Aromatic Compounds , Density Functional Theory , Fourier Transform Infrared , Bit Ir , Terra Preta ,

"Synchrotron-Based Temperature-Dependent Terahertz and Far-Infrared Spe" by Hao Zhang and Qiao Yan

Synchrotron-based terahertz and far-infrared spectra of aerographite and single-walled carbon nanotube aerogel were acquired using the terahertz/far-infrared beamline at the Australian Synchrotron in the frequency range of 7–1000 cm−1 and temperature range of 6–300 K. We observe infrared absorption features at ~ 35, ~ 79, and ~ 889 cm−1 for aerographite and ~ 35, ~ 79, ~ 685, ~ 923, and ~ 950 cm−1 for single-walled carbon nanotube aerogel. Temperature dependences of the terahertz and far-infrared spectra reveal frequency shifts of the infrared absorption peaks with temperature. The “red-shift” behavior of peak positions (~ 35 and ~ 79 cm−1) can be attributed to the anharmonicity of vibrational potentials. The ~ 35 cm−1 mode is expected to be only Raman active. Its appearance in our infrared spectra suggests that structural disorder in our samples relaxed this selection rule. ....

Australian Synchrotron , Far Infrared , Egative Thermal Expansion , Ingle Walled Carbon Nanotube Aerogel , Temperature Dependence ,

National Instruments Paves the Way for Terahertz Regime in 6G Networks

Developing tools that can test new technologies for 6G networks is the key step in making it a reality ....

Walter Nitzold , National Instruments , Principal Software , Terahertz Communications , Principal Software Engineer , Group Manager , Wave Transceiver System , National Instruments , Ype Sponsored ,

6G teknolojisiyle terahertz bandında yeni gelişme

LG, 6G terahertz (THz) bandında 100 metrenin üzerindeki verileri başarıyla aktararak 6G iletişim teknolojisinin geliştirilmesine öncülük ediyor. ....

United States , South Korea , Germany Berlin Technology , Applications Work Group , Technology Parent , Research Center , Telecommunications Industry Alliance , Applied Solid State Physics , North In America , Statement Place , Technology Parent Manager , ஒன்றுபட்டது மாநிலங்களில் , தெற்கு கொரியா , ஆராய்ச்சி மையம் , பயன்படுத்தப்பட்டது திட நிலை இயற்பியல் , Eknolojİ Haberleri ,