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Hybrid Metalens Supports Miniaturized Optics for Endoscopy

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Researchers at Boston University and Harvard University, with colleagues from the Misr University for Science and Technology in Egypt and the University of Waterloo in Canada, developed an achromatic, hybrid metalens that is designed to focus two different wavelengths in the near-infrared region. The metalens can support coherent Raman scattering (CRS) imaging in miniaturized optical devices and endoscopes. Its small size could lead to new opportunities for endoscopy development. Researchers at Boston and Harvard Universities, with colleagues from the Misr University for Science and...Read full article

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    Published: September 2021
    Glossary
    metalens
    A metalens, short for "metasurface lens," is a type of optical lens that uses nanostructured materials to manipulate light at a subwavelength scale. Unlike traditional lenses made of glass or other transparent materials, metalenses do not rely on the curvature of their surface to refract or focus light. Instead, they use carefully engineered patterns of nanostructures, such as nanoscale antennas or dielectric structures, to control the phase and amplitude of light across the lens's surface....
    infrared
    Infrared (IR) refers to the region of the electromagnetic spectrum with wavelengths longer than those of visible light, but shorter than those of microwaves. The infrared spectrum spans wavelengths roughly between 700 nanometers (nm) and 1 millimeter (mm). It is divided into three main subcategories: Near-infrared (NIR): Wavelengths from approximately 700 nm to 1.4 micrometers (µm). Near-infrared light is often used in telecommunications, as well as in various imaging and sensing...
    Research & TechnologyOpticsmetalensinfraredcoherent Raman scatteringendoscopesEgyptMisr University for Science and TechnologyUniversity of WaterlooCanadahybrid metalensMaterialsmetasurfacemetamaterialsTech PulseBioScan

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