2D tunable all-solid-state random laser in the visible
A two-dimensional (2D) solid-state random laser emitting in the visible is demonstrated, in which optical feedback is provided by a controlled disordered arrangement of air-holes in a dye-doped polymer film. We find an optimal scatterer density for which threshold is minimum and scattering is the st...
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Zusammenfassung: | A two-dimensional (2D) solid-state random laser emitting in the visible is
demonstrated, in which optical feedback is provided by a controlled disordered
arrangement of air-holes in a dye-doped polymer film. We find an optimal
scatterer density for which threshold is minimum and scattering is the
strongest. We show that the laser emission can be red-shifted by either
decreasing scatterer density or increasing pump area. We show that spatial
coherence is easily controlled by varying pump area. Such a 2D random laser
provides with a compact on-chip tunable laser source and a unique platform to
explore non-Hermitian photonics in the visible |
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DOI: | 10.48550/arxiv.2208.10538 |