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Graphene-Based Absorbers Could Enable Ultrafast Lasers in THz Range

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MODENA, Italy, Sept. 15, 2017 — A terahertz saturable absorber has been created using printable graphene inks produced by liquid phase exfoliation (LPE) and deposited by transfer coating and ink jet printing. Such an absorber could enable the development of ultrafast lasers in the THz range. These lasers could be useful in applications where short time scale excitation of specific transitions is important, such as time-resolved spectroscopy of gasses and molecules. Researchers at CNR-Istituto Nanoscienze used LPE of graphite to formulate both a water-based ink and a surfactant-free, low boiling point, ethanol-based...Read full article

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    Published: September 2017
    Glossary
    terahertz
    Terahertz (THz) refers to a unit of frequency in the electromagnetic spectrum, denoting waves with frequencies between 0.1 and 10 terahertz. One terahertz is equivalent to one trillion hertz, or cycles per second. The terahertz frequency range falls between the microwave and infrared regions of the electromagnetic spectrum. Key points about terahertz include: Frequency range: The terahertz range spans from approximately 0.1 terahertz (100 gigahertz) to 10 terahertz. This corresponds to...
    Research & TechnologyeducationEuropeLasersMaterialsnanoscale materialsultrafast lasersterahertzgrapheneterahertz absorber

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