Terahertz Imaging …

The research in terhertz radiation is almost 15 years old and includes waves between 300 GHz to 10 THz (in some works up to 30 THz). The first imaging device based on terahertz radiation was introduced in 1995 by Hu and Nuss. Terahertz imaging has applications in security screening systems (e.g. recognition of explosives and hazardous materials), genetic engineering, pharmaceutical quality control and medical imaging.

Fields

Fundamentals of Terahertz Radiation
Optics for Terahertz Generation
Noise Modeling
Complexity Reduction of Terahertz Image Signals

Applications

Medical Imaging Using T-Rays
Terahertz Imaging for Breast Cancer
Terahertz-Based Industrial Quality Control
Pharmaceutical Quality Control
Scanning Systems
Surveillance

More Information

Terahertz Links

» See the list of other research activities

The Terahertz Gap

A terahertz is 10¹² Hz or a thousand GHz, a measure of frequency. At one terahertz, each cycle is one picosecond, and the wavelength in free space is roughly 300µm.

Radio waves sent at terahertz frequencies usually travel in line of sight. These waves, known as terahertz radiation, are in a waveband that is the overlap of what is normally regarded as microwave radiation and far-infrared light. The Earth's atmosphere is a strong absorber of terahertz radiation, so the range of terahertz radiation is quite short. However, recent technologies using terahertz radiation have been developed, which are intended for applications such as medical imaging and surveillance. [Source: WIKIPEDIA]

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