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Laser beams can cast shadows new research reveals

The ability to control the passage of one laser beam by another, or to use one beam to block another, could enable novel methods of optical switching and signal processing (Image: Pixabay)

The ability to control the passage of one laser beam by another, or to use one beam to block another, could enable novel methods of optical switching and signal processing (Image: Pixabay)

The phenomenon, made possible through a nonlinear optical process, opens new possibilities for optical technologies, such as devices where one laser beam controls another.

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