META 2021, META'12

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Active control of the emission of a random laser
Nicolas Bachelard, Jonathan Andreasen, Sylvain Gigan, Patrick Sebbah

Last modified: 2012-01-04


The lasing emission spectrum of a random laser is both unpredictable and very sensitive to fluctuation of pump excitation. We demonstrate that its spectrum can be controlled and any mode can be selected by adjusting iteratively the pump profile. This control is tested numerically in the case of a one-dimensional random laser and adapted to an actual experiment.


random laser; disorder media; non-uniform pumping