Experimental study demonstrates an all-optical photonic time crystal in plasmonic microstructures, indicating pathways for high-frequency light modulation.
A photonic time crystal is an optical system of which properties such as its refractive index are modulated strongly and rapidly over time. One has now been obtained all-optically by delivering an intense terahertz light wave onto a material with a specialized microstructure that hosts collective waves of electrons known as plasmons. An all-optical ‘photonic time crystal’ has been made that operates at high frequencies.
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