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Terahertz spectroscopy detects and controls properties of matter with electromagnetic fields that are in the frequency range between a few hundred gigahertz and several terahertz (abbreviated as THz). In many-body systems, several of the relevant states have an energy difference that matches with the energy of a THz photon. Therefore, THz ...
In physics, terahertz time-domain spectroscopy (THz-TDS) is a spectroscopic technique in which the properties of matter are probed with short pulses of terahertz radiation. The generation and detection scheme is sensitive to the sample's effect on both the amplitude and the phase of the terahertz radiation. Fourier transform of the above pulse.
Terahertz waves lie mostly at the far end of the infrared band, the longest ones in the microwave band. Terahertz radiation – also known as submillimeter radiation, terahertz waves, tremendously high frequency [1] (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 ...
A conceptual example of a possible way to prepare light for a Dolinar receiver. In a similar way that digital information can be transmitted by modulating the frequency or amplitude of electromagnetic waves, digital information can be encoded within the phase of coherent light.
Terahertz imaging is an emerging and significant nondestructive evaluation (NDE) technique used for dielectric (nonconducting, i.e., an insulator) materials analysis and quality control in the pharmaceutical, biomedical, security, materials characterization, and aerospace industries.
The terahertz frequency range used in materials research is usually defined as 0.1 to 10 THz. [note 1] This bandwidth is also known as the terahertz gap because it is noticeably underutilized. [note 2] This is because terahertz waves are electromagnetic waves with frequencies higher than microwaves but lower than infrared radiation and visible ...
Two slits illuminated by one source show an interference pattern. The source is far to the left in the diagram, behind collimators that create a parallel beam. This combination ensures that a wave from the source strikes both slits at the same part of the wave cycle: the wave will have coherence.
This template is used to display Coxeter–Dynkin diagrams (CDDs). To use the template, list the parts of the diagram from left to right, separated by vertical-bar (pipe) characters (" | "). For example: