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.
| Original language | English |
|---|---|
| Article number | 8337 |
| Journal | Scientific Reports |
| Volume | 13 |
| Issue number | 1 |
| DOIs | |
| State | Published - 23 May 2023 |
Bibliographical note
Publisher Copyright:© 2023, The Author(s).
Funding
We thank Profs. Hui Cao and Alexey Yamilov for useful discussions. We are grateful to Dr. Leonid Wolfson for his dedication to the lab, as well as Dr. Yossi Abulafia for his help in the fabrication process and the Bar-Ilan Institute of Nanotechnology and Advanced Materials for providing with fabrication facilities. This research was supported by Israel Science Foundation (1871/15, 2074/15 and 2630/20); United States-Israel Binational Science Foundation (2015694 and 2021811). PBC Post-Doctoral Fellowship Program from the Israeli Council for Higher Education.
| Funders | Funder number |
|---|---|
| United States-Israel Binational Science Foundation | 2015694, 2021811 |
| Israel Science Foundation | 2074/15, 1871/15, 2630/20 |
| Council for Higher Education |