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White light supercontinuum: Power struggle

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Marie Freebody, [email protected]

LILLE, France – Researchers are pioneering a practical way of generating high-power white light suitable for applications including spectroscopy, microscopy and optical coherence tomography. Producing high-power light across a broad spectrum, also known as a supercontinuum, is not easy. It requires high-power pumping to trigger significant nonlinear effects (usually within a nonlinear medium such as an optical fiber). In this process, incident light can be converted into supercontinuous white light. Today’s pump source of choice is the pulsed laser. With typical peak powers of up to several tens...Read full article

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    Published: February 2010
    Glossary
    continuous-wave laser
    A laser that emits radiation continuously rather than in short bursts, as in a pulsed laser.
    optical coherence tomography
    Optical coherence tomography (OCT) is a non-invasive imaging technique used in medical and scientific fields to capture high-resolution, cross-sectional images of biological tissues. It provides detailed, real-time, and three-dimensional visualization of tissue structures at the micrometer scale. OCT is particularly valuable in ophthalmology, cardiology, dermatology, and various other medical specialties. Here are the key features and components of optical coherence tomography: Principle of...
    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.
    zero-dispersion wavelength
    In a single-mode optical fiber, the wavelength that causes material dispersion and waveguide dispersion to cancel each other. In a multimode fiber, loose term for the wavelength at which there is a minimum of material dispersion.
    Alexandre KudlinskiBiophotonicsbroad spectrumconfocal microscopescontinuous wave laserscontinuous-wave laserEuro NewsEuropefiber opticsfluorophoresFreebodygermanium dioxideKerrKudlinskilensesMarie FreebodyMicroscopyNewsoptical coherence tomographyOpticsphotonic crystal optical fiberPrismspulsed lasersRamanspectroscopysupercontinuasupercontinuumUniversity of Lillewhite lightzero-dispersion wavelengthLasers

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