Papers & References

2D tunable all-solid-state random laser in the visible

HES / HEO 6001 Spatial Light Modulators
Beam Shaping / Beam Steering Pulse Application / -Shaping
Published on:
Authors: Kumar, Bhupesh; Homri, Ran; Sebbah, Patrick
Abstract:

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.

Open Access

Publication: Scientific Reports
Issue/Year: Scientific Reports, volume 13, Article number: 8337 (2023)
DOI: 10.1038/s41598-023-35388-x
Link: https://doi.org/10.1038/s41598-023-35388-x
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