Random lasers can be made simply by grinding a laser crystal and optically pumping the resulting powder. The physics behind the resulting laser emission is rich but has led to much controversy. New experiments may now settle the debate behind their operation.
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Diederik S. Wiersma.

Diederik S. Wiersma.
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Wiersma, D. Random lasers explained?. Nature Photon 3, 246–248 (2009). https://doi.org/10.1038/nphoton.2009.53
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DOI: https://doi.org/10.1038/nphoton.2009.53
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