What is terahertz radiation used for?
Terahertz radiation can penetrate fabrics and plastics, so it can be used in surveillance, such as security screening, to uncover concealed weapons on a person, remotely. This is of particular interest because many materials of interest have unique spectral “fingerprints” in the terahertz range.
How much is a terahertz?
1 trillion hertz
Terahertz (THz) is a unit of measure of frequency that is equal to 1 trillion hertz (1012 Hz).
How do you make THz radiation?
Current methods of generating terahertz radiation involve lasers, vacuum tubes and special circuits cooled near absolute zero, often in room-sized apparatus costing thousands of dollars.
What terahertz means?
one trillion hertz
Definition of terahertz : a unit of frequency equal to one trillion hertz Visible light occupies the neighborhood of 300 terahertz, which is 300 x 1012 cycles per second. — Dave Doody Terahertz waves also occupy a unique window of the electromagnetic spectrum where a large number of molecules emit and absorb radiation.
Is terahertz radiation ionizing?
The terahertz (THz) band lies between microwave and infrared rays in wavelength and consists of non-ionizing radiation.
What is a terahertz laser?
Far-infrared laser or terahertz laser (FIR laser, THz laser) is a laser with output wavelength in between 30-1000 µm (frequency 0.3-10 THz), in the far infrared or terahertz frequency band of the electromagnetic spectrum.
What is terahertz laser?
What is terahertz metal?
A terahertz metamaterial is a class of composite metamaterials designed to interact at terahertz (THz) frequencies. The terahertz frequency range used in materials research is usually defined as 0.1 to 10 THz. This bandwidth is also known as the terahertz gap because it is noticeably underutilized.
What is terahertz radiation?
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 ITU-designated band of frequencies from 0.3 to 3 terahertz (THz; 1 THz = 1012 Hz; 1 THz is 1000 GHz).
What are the advantages of terahertz imaging?
Terahertz imaging has advantages over the more expensive and shorter range X-ray scanners. A variety of materials are transparent to terahertz radiation, which allows it to measure the thickness, density, and structural properties of materials that are difficult to detect.
Do Your terahertz cameras require a THz source?
Our terahertz cameras are active detecting devices, and require an external THz source. We offer sub-terahertz wave sources based on IMPATT technology. All our TERA-series THz imaging cameras employ the same type of detectors with identical capabilities and spatial resolution.
What is terahertz computed tomography (CT)?
Terahertz computed tomography records both amplitude and spectral phase information when compared to X-ray imaging. Terahertz CT can identify and compare different substances while non-destructively locating them. ^ Guillet, J. P.; Recur, B.; Frederique, L.; Bousquet, B.; Canioni, L.; Manek-Hönninger, I.; Desbarats, P.; Mounaix, P. (2014).