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Photonic Chip Combines Many VCSELs into Single Laser

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Researchers from the Technion-Israel Institute of Technology and the University of Würzburg successfully forced an array of vertical-cavity lasers to act together as a single laser — a highly effective laser network the size of a grain of sand. Vertical-cavity surface-emitting lasers (VCSELs), widely used in applications such as cell phones, car sensors, and data transmission, measure just a few microns, which sets a strict limit on the output power they can generate. Scientists have taken many approaches in efforts to enhance the power emitted by such devices by combining...Read full article

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    Published: September 2021
    Glossary
    quantum
    The term quantum refers to the fundamental unit or discrete amount of a physical quantity involved in interactions at the atomic and subatomic scales. It originates from quantum theory, a branch of physics that emerged in the early 20th century to explain phenomena observed on very small scales, where classical physics fails to provide accurate explanations. In the context of quantum theory, several key concepts are associated with the term quantum: Quantum mechanics: This is the branch of...
    topology
    Topology is a branch of mathematics that focuses on the properties of space that are preserved under continuous deformations, such as stretching, crumpling, and bending, but not tearing or gluing. Topology studies the intrinsic properties of objects and spaces that remain unchanged even when the objects undergo transformations. The key concept in topology is that of continuity, and it is concerned with understanding the spatial relationships and structures that persist despite deformations. ...
    integrated photonics
    Integrated photonics is a field of study and technology that involves the integration of optical components, such as lasers, modulators, detectors, and waveguides, on a single chip or substrate. The goal of integrated photonics is to miniaturize and consolidate optical elements in a manner similar to the integration of electronic components on a microchip in traditional integrated circuits. Key aspects of integrated photonics include: Miniaturization: Integrated photonics aims to reduce the...
    Research & TechnologyeducationLasersVCSELslaser arrayslaser networksBiophotonicsquantumcircuitsmicrolaserstopologyMaterialsLight Sourcesintegrated photonicsintegrated photonics circuitsEuropeuniversity of wurzburgGermanytopological insulatorsCommunicationsTech Pulse

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