Terahertz radiation can be a breakthrough in communication and observation tools.

“Frequency comb converted into light by a cell with Rubidium atoms. Credit: Mateusz Mazelanik, Wiktor Krokosz, University of Warsaw” (ScitechDaily, “Quantum Antenna” Breaks Barrier in Measuring Elusive Terahertz Signals)

“A research team has created a quantum antenna capable of precisely measuring terahertz frequency combs for the first time.” /ScitechDaily, “Quantum Antenna” Breaks Barrier in Measuring Elusive Terahertz Signals.)  The new system benefits Rydberg atoms as a measurement tool. 

“Terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency (THF), T-rays, T-waves, T-light, T-lux or THz – consists of electromagnetic waves within the International Telecommunication Union-designated band of frequencies from 0.1 to 10 terahertz (THz) (from 0.3 to 3 terahertz (THz) in older texts, which is now called "decimillimetric waves", although the upper boundary is somewhat arbitrary and has been considered by some sources to be 30 THz” (Wikipedia, Terahertz radiation)

Terahertz radiation’s position in the electromagnetic spectrum. It is between microwaves and infrared radiation. This makes them an interesting alternative for radio waves and microwaves in communication and observation tools. The terahertz Doppler-radar, or terahertz lidar. Can be two antennas that orbit each other. This kind of teraherz-doppler system can be the tool. That makes the stealth technology unable to protect things like stealth fighters. 

Or, otherwise saying. Terahertz radiation can hack the stealth technology. Lidar-type terahertz scanners. It can open a new era for stealth and anti-stealth systems. The idea is that. It’s possible to turn those terahertz signals away from the stealth plane. But the use of those systems requires that the aircraft must use active systems. The idea is that the coherent terahertz beam. Will be shot against the terherz lidar. The system should turn the terharz signals away from stealth aircraft. The ground-based system can see that radiation. But another thing is that. Those systems can also have lasers. That reacts to terahertz radiation. The combat laser system sees the target. 

It activates a laser. Or a coherent microwave. That should destroy the terahertz radar. Another thing is that. The terahertz-jammer requires precision terahertz frequencies. The lidar system uses. And that new antenna can make. These types of systems are possible. 

The stealth technology. That focus is only on the radar frequency, which cannot affect the terahertz radiation.  Modern chameleon camouflage. That can make an object blend in with the background. But it is unable. To affect terahertz radiation. This means the terherz-scanner. It can make many of the most effective camouflages. And stealth systems are unable to work. The same systems that detect radio and laser scanners cannot detect terahertz radiation. 

And that’s why this radiation type is used in body scanners, the mission is to uncover hidden weapons under clothes. Terahertz radiation can also be used in communication tools. Terahertz radiation can make the same things. That other electromagnetic waves can do in communication tools. The biggest difference. Between terahertz radiation. And radio transmission is this. Terahertz radiation is harder to disturb. Using electromagnetic fields. This makes the radiation suitable for the next-generation internet.  Terahertz radiation is a promising thing. But a lot of work must be done with those systems. That. They can make the new communication revolution. 

https://interestingengineering.com/military/china-chameleon-camouflage-military-use

https://scitechdaily.com/quantum-antenna-breaks-barrier-in-measuring-elusive-terahertz-signals/

https://en.wikipedia.org/wiki/Doppler_radar

https://en.wikipedia.org/wiki/Rydberg_atom

https://en.wikipedia.org/wiki/Terahertz_radiation