Terahertz radiation falls in between infrared radiation and microwave radiation in the electromagnetic spectrum, and it shares some properties with each of these. Terahertz radiation can penetrate a wide variety of non-conducting materials.
In physics, terahertz radiation, also called submillimeter radiation, terahertz waves, terahertz light, T-rays, T-waves, T-light, T-lux, or THz, consists of electromagnetic waves at frequencies from 0.3 to 10 terahertz (THz). The term applies to electromagnetic radiation with frequencies between the high-frequency edge of the millimeter wave band, 300 GHz and the low frequency edge of the far-infrared light band, 3000 GHz. Corresponding wavelengths of radiation in this band range from 1 mm to 0.1 mm (or 100 μm). Because terahertz radiation begins at a wavelength of 1 mm and proceeds into shorter wavelengths, it is sometimes known as the submillimeter band and its radiation as submillimeter waves, especially in astronomy.
In physics, terahertz radiation, also called submillimeter radiation, terahertz waves, terahertz light, T-rays, T-waves, T-light, T-lux, or THz, consists of electromagnetic waves at frequencies from 0.3 to 10 terahertz (THz). The term applies to electromagnetic radiation with frequencies between the high-frequency edge of the millimeter wave band, 300 GHz and the low frequency edge of the far-infrared light band, 3000 GHz. Corresponding wavelengths of radiation in this band range from 1 mm to 0.1 mm (or 100 μm). Because terahertz radiation begins at a wavelength of 1 mm and proceeds into shorter wavelengths, it is sometimes known as the submillimeter band and its radiation as submillimeter waves, especially in astronomy.
Terahertz radiation can pass through clothing, paper, cardboard, wood, masonry, plastic and ceramics. The penetration depth is typically less than that of microwave radiation. Terahertz radiation has limited penetration through fog and clouds and cannot penetrate liquid water or metal.
Implementing this technology in camera allows see-through imaging .
We can read the contents of book without actually open it. Till now it can read maximum 9 pages without opening book.
Here is the picture of Terahertz waves in electromagnetic spectrum.
Here is the picture of Terahertz waves in electromagnetic spectrum.
Application:-
1. Imaging
2. Radio astronomy
3.Environmental control
4. Explosive detection
5. Basic detection
6.Basic research
7. Communication
8. Homeland security
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