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Making Light Pulses Breathe

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Stacking glass and air helps prevent beam collapse.

Hank Hogan

Motivated in part by ideas proposed for clouds of ultracold atoms, researchers at California Institute of Technology in Pasadena and at the University of Massachusetts Amherst sent femtosecond laser pulses through a stack of glass slides and intervening air gaps without the beam collapsing on itself. Instead, the beam shrank and expanded in width, seeming to breathe in and out as it passed through the stack. Passing a laser beam through a stack of alternating glass slides and air gaps enables management of the beam’s nonlinearity. The blue curves show experimental results (for the beam...Read full article

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    Published: October 2006
    Glossary
    optical switching
    Optical switching refers to the process of controlling the routing or transmission of optical signals within a network using various techniques to selectively switch or redirect optical paths. This is essential in optical communication systems, where data is transmitted as light signals over optical fibers. Optical switching technologies enable efficient, high-speed, and flexible routing of optical signals, enhancing the performance and scalability of optical networks. There are several types...
    Basic Sciencefemtosecond laser pulsesindustrialoptical switchingResearch & Technologyultracold atoms

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