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    This Laser Beam’s Behavior Runs Counter to Normal Laws of Refraction

    Article obtained from Photonics RSS Feed.

    A type of laser beam that does not follow the classical laws of refraction, discovered by a team at the University of Central Florida (UCF), could offer new opportunities for shaping the flow of light beams used for optical communications and laser applications.

    Normally, light slows down when it passes through a dense material. The new class of laser beams, called spacetime wave packets, can be arranged to not change speed at all, or even to speed up in denser materials. “As such, these pulses of light can arrive at different points in space at the same time,” professor Ayman Abouraddy, the study’s principal investigator, said.

    The researchers created the spacetime wave packets by using a spatial light…

    Aug, 10 2020 |

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