2024/08/07 by Renu Yadav, Yadav, Renu, Sourabh Pal +9
Physics and Astronomy · #FOS: Physical sciences #Optics (physics.optics) #Photonic Crystals and Applications #Quantum optics and atomic interactions #Random lasers and scattering media
paper · pdf · doi:10.48550/arxiv.2408.03536
openalex publication_date 2024/08/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/01
An unprecedented double-threshold lasing behavior has been observed in a plasmonic random laser composed of Au nanoislands decorated on vertically standing ZnO nanorods, infiltrated with dye-doped polymer matrix. The strong coupling of random laser modes to plasmonic nanocavities results in a dominant absorption of the random laser emission, leading to the first unusual lasing threshold. At higher pump fluences, the nonlinear optical behavior of the Au nanoislands induces a second lasing threshold. Various statistical tools have been employed to analyze the intensity fluctuations of the random laser modes, validating this unique lasing behavior.