orbital angular momentum (OAM)

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Penn Engineers Develop First Tunable, Chip-Based “Vortex Microlaser” and Detector, Encode Information in Twisting Beams of Light

Vortex lasers are named for the way light spirals around their axis of travel, thanks to a property known as orbital angular momentum, or OAM. Different OAM “modes” correspond to the direction and spacing of…