Temperature-controlled spectral tuning of a single wavelength polymer-based solid-state random laser

Bhupesh Kumar*, Sebastian Andreas Schulz, Patrick Sebbah*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
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Abstract

We demonstrate temperature-controlled spectral tunability of a partially-pumped single-wavelength random laser in a solid-state random laser based on DCM (4-dicyanomethylene-2-methyl-6-(p-dimethylaminostyryl)-4H-pyran) doped PMMA (polymethyl methacrylate) dye. By carefully shaping the spatial profile of the pump, we first achieve low-threshold, single-mode random lasing with excellent side lobes rejection. Notably, we show how temperature-induced changes in the refractive index of the PMMA-DCM layer result in a blue shift of this single lasing mode. We demonstrate spectral tunability over an 8nm-wide bandwidth.
Original languageEnglish
Pages (from-to)4317-4326
JournalOptics Express
Volume32
Issue number3
Early online date25 Jan 2024
DOIs
Publication statusPublished - 29 Jan 2024

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