Active control of the emission of a random laser

Nicolas Bachelard; Jonathan Andreasen; Sylvain Gigan; Patrick Sebbah

META 2021, META'12

Nicolas Bachelard, Jonathan Andreasen, Sylvain Gigan, Patrick Sebbah

Last modified: 2012-01-04

Abstract

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.

Keywords

random laser; disorder media; non-uniform pumping