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Photonic Time Crystals Amplify Light Exponentially for Lasing and Sensing

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ESPOO, Finland, Nov. 19, 2024 — The first practical approach to creating photonic time crystals at optical frequencies, developed by an international research team, could lay the groundwork for faster, more compact lasers, sensors, and other optical devices. The team comprising scientists from Aalto University, the University of Eastern Finland, Karlsruhe Institute of Technology, and Harbin Engineering University previously demonstrated photonic time crystals at microwave frequencies. However, designing the crystals at optical frequencies has remained a challenge for the researchers, due to the need for a fast,...Read full article

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    Published: November 2024
    Glossary
    nano
    An SI prefix meaning one billionth (10-9). Nano can also be used to indicate the study of atoms, molecules and other structures and particles on the nanometer scale. Nano-optics (also referred to as nanophotonics), for example, is the study of how light and light-matter interactions behave on the nanometer scale. See nanophotonics.
    photonic crystals
    Photonic crystals are artificial structures or materials designed to manipulate and control the flow of light in a manner analogous to how semiconductors control the flow of electrons. Photonic crystals are often engineered to have periodic variations in their refractive index, leading to bandgaps that prevent certain wavelengths of light from propagating through the material. These bandgaps are similar in principle to electronic bandgaps in semiconductors. Here are some key points about...
    Research & TechnologyeducationEuropeAalto UniversityImagingLasersLight SourcesMaterialsOpticsSensors & DetectorsCommunicationsnanometamaterialsphotonic crystalslight-matter interactionslight amplificationphotonic time crystalsBiophotonics

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