Graphene amplifier unlocks hidden frequencies in the electromagnetic spectrum

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Terahertz (THz) waves are located between microwaves and infrared in the light frequency spectrum, but due to their low energy, scientists have not been able to harness their potential.

A team of physicists has created a new type of optical transistor that works as a THz amplifier, which uses graphene and a high temperature semiconductor.

This frequency amplifier will allow the use for the communications of the elusive wavelengths of terahertz, enabling revolutionary technologies.

The device connects to a power source. When THz radiation hits the outer graphene layer, it is amplified, giving it more power and energy than it had when it arrived.

This technology would open a new era of medical, communications, satellites, cosmological and other technologies, for example, a safe and non-destructive alternative to X-rays.

Source:phys.org, read original article
https://phys.org/news/2020-02-graphene-amplifier-hidden-frequencies-electromagnetic.html

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