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Excelitas Technologies Corp. - X-Cite Vitae LB 11/24

On-Chip Supercontinuum Laser Holds Promise in Portability

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JOEL WILLIAMS, ASSOCIATE EDITOR
[email protected]

An ultra-efficient on-chip supercontinuum laser developed by researchers at the University of Twente is poised to enable applications ranging from portable medical imaging devices to chemical sensing and lidar. The researchers’ design enabled control over the dispersion of light in the laser system by alternately widening and narrowing the beam of light. Lasers normally emit light that is coherent, meaning that the waves they emit are identical in frequency and waveform. The light’s coherent nature makes it possible to send a narrow beam over extreme distances with very low...Read full article

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    Published: April 2023
    Glossary
    waveguide
    A waveguide is a physical structure or device that is designed to confine and guide electromagnetic waves, such as radio waves, microwaves, or light waves. It is commonly used in communication systems, radar systems, and other applications where the controlled transmission of electromagnetic waves is crucial. The basic function of a waveguide is to provide a path for the propagation of electromagnetic waves while minimizing the loss of energy. Waveguides come in various shapes and sizes, and...
    supercontinuum
    Supercontinuum refers to a broad spectrum of light that spans a wide range of wavelengths, typically from the visible to the near-infrared or even mid-infrared regions of the electromagnetic spectrum. This phenomenon occurs when intense laser light is coupled into a nonlinear optical medium, such as a photonic crystal fiber or a nonlinear crystal. The process of supercontinuum generation involves nonlinear effects such as self-phase modulation, stimulated Raman scattering, and four-wave...
    white light
    Light perceived as achromatic, that is, without hue.
    normal dispersion
    Dispersion characterized by an increasing index of refraction in the medium as the frequency of the propagating light increases towards the resonant frequency of the medium. Normal dispersion occurs in most transparent media.
    bandwidth
    The range of frequencies over which a particular instrument is designed to function within specified limits. See also fiber bandwidth.
    anomalous dispersion
    Dispersion that occurs when the medium's index of refraction decreases as the frequency of the propagating light increases. For a given medium, some wavelength ranges may produce anomalous dispersion while others produce normal dispersion.
    Research & TechnologyLasersOpticsWaveguidesupercontinuumwhite lightnormal dispersionbandwidthanomalous dispersionsign-alternating dispersionUniversity of TwenteEuropeAdvanced Photonics ResearchImaginginstrumentsConsumerLight SourcesTechnology News

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