2018/08/30 by Ngoc My Hanh Duong, Duong, Ngoc My Hanh, Blake Regan +8
Physics and Astronomy · #Applied Physics (physics.app-ph) #FOS: Physical sciences #Laser-Matter Interactions and Applications #Materials Science (cond-mat.mtrl-sci) #Optics (physics.optics) #Quantum optics and atomic interactions #Random lasers and scattering media #cond-mat.mtrl-sci #physics.app-ph #physics.optics
paper · pdf · doi:10.48550/arxiv.1808.10486
arxiv created 2018/08/30 · openalex publication_date 2018/08/30 · arxiv updated 2018/09/03 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
Random lasers use radiative gain and multiple scatterers in disordered media to generate light amplification. In this study, we demonstrate a random laser based on diamond nanoneedles that act as scatterers in combination with fluorescent dye molecules that serve as a gain medium. Random lasers realized using diamond possess high spectral radiance with angle-free emission and thresholds of 0.16 mJ. The emission dependence on the pillar diameter and density is investigated, and optimum lasing conditions are measured for pillars with spacing and density of 336 nm and ~ 2.9x1010 cm-2. Our results expand the application space of diamond as a material platform for practical, compact photonic devices and sensing applications.