terahertz gap

terahertz gap

[′ter·ə‚hərts ‚gap]
(electromagnetism)
A region of the electromagnetic spectrum, roughly in the frequency range from 0.05 to 20 terahertz, that lies at the boundary between the microwave region where electronic devices such as high-speed transistors operate and the infrared and visible regions where photonic devices such as lasers operate, and whose exploitation has therefore suffered from a lack of bright sources or coherent sensitive detectors.
References in periodicals archive ?
In connection with the technology convergence of advancing microwave semiconductor technology according to international technology programmes and roadmaps, the findings of this project are expected to comprise a significant contribution towards the large-scale exploitation of the heavily sought-after frequency space between 100 GHz and 1 THz, the so-called terahertz gap .
The mechanism operates in the Terahertz gap - the range between microwave and infrared frequencies.
Thus the name for the region of the electromagnetic spectrum they occupy between the better known microwave and infrared radiation: the terahertz gap.
Closing the terahertz gap with the help of metamaterials could take the cloaking of weapons, bombs, drugs and other matter out of the realm of magic and into the real world.
To address the terahertz gap, engineers have traditionally used frequency conversion converting alternating current at one frequency to alternating current at another frequency to multiply circuit operating frequencies up from millimeter-wave frequencies.