2008/05/02 by Hakan E. Türeci, Li Ge, Stefan Rotter +1 · 3 citations
Computer Science · Engineering · Physics and Astronomy · #Neural Networks and Reservoir Computing #Random lasers and scattering media #Terahertz technology and applications #cond-mat.dis-nn #cond-mat.mes-hall #nlin.CD #physics.optics
paper · pdf · doi:10.1126/science.1155311
published as Science 320, 643 (2008) · 11 pages, 3 figures. Supplementary information for arXiv:0805.4496
openalex publication_date 2008/05/02 · arxiv created 2008/05/29 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
Unlike conventional lasers, diffusive random lasers (DRLs) have no resonator to trap light and no high-Q resonances to support lasing. Because of this lack of sharp resonances, the DRL has presented a challenge to conventional laser theory. We present a theory able to treat the DRL rigorously and provide results on the lasing spectra, internal fields, and output intensities of DRLs. Typically DRLs are highly multimode lasers, emitting light at a number of wavelengths. We show that the modal interactions through the gain medium in such lasers are extremely strong and lead to a uniformly spaced frequency spectrum, in agreement with recent experimental observations.