Leap-ahead technology generates terahertz radiation

https://www.laserfocusworld.com/science-research/article/14232942/leapahead-technology-generates-terahertz-radiation

"demonstrated a compact terahertz laser that operates at room temperature and can produce 120 individual frequencies spanning the 0.25–1.3 THz region—far more than previous terahertz sources... we can make the laser itself be the size of a cube about 15 × 15 × 15 cm... short-range communications... methyl fluorid, a molecule that interacts strongly with optical fields, instead of nitrous oxide... short-range radar, biomedicine, and imaging"

Related:

Wallet-sized device focuses terahertz energy to generate high-resolution images

https://techxplore.com/news/2022-02-wallet-sized-device-focuses-terahertz-energy.html

When ultrashort electron bunch accelerates and drastically stops, it can generate terahertz radiation

https://phys.org/news/2024-07-ultrashort-electron-bunch-drastically-generate.html