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Innovation

A new way to make laser-like beams using 250x less power

The beam they demonstrated was ultraviolet and very low power — less than a millionth of a watt. For context, the laser in a CD player is about one-thousandth of a watt.
With precarious particles called polaritons that straddle the worlds of light and matter, University of Michigan researchers have demonstrated a new, practical and potentially more efficient way to make a coherent laser-like beam.
They have made what’s believed to be the first polariton laser that is fueled by electrical

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