2D tunable all-solid-state random laser in the visible.
- Resource Type
- Article
- Authors
- Kumar, Bhupesh; Homri, Ran; Sebbah, Patrick
- Source
- Scientific Reports. 5/23/2023, Vol. 13 Issue 1, p1-8. 8p.
- Subject
- *OPTICAL feedback
*TUNABLE lasers
*LASERS
*DYE lasers
*POLYMER films
*PHOTONICS
- Language
- ISSN
- 2045-2322
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. [ABSTRACT FROM AUTHOR]