A new study published in Nature Communications has revealed an exciting nonrelativistic, nonmagnetic mechanism for generating terahertz radiation. This could potentially open up a new range of applications for terahertz radiation, such as imaging, communication and spectroscopy. The mechanism involves a laser-driven periodic structure made of material with a nonlinear optical response. By sending laser pulses into the structure, the researchers were able to produce intense terahertz radiation that was more than 20 times higher than previously reported levels. The discovery of this new mechanism could pave the way for a new generation of high-power terahertz sources.

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source: Phys.org