Noriega, J. M.Pesquera, L.Rodríguez Díaz, Miguel ÁngelCasademunt i Viader, JaumeHernández Machado, Aurora2009-09-222009-09-2219911050-2947https://hdl.handle.net/2445/9363The intensity correlation functions C(t) for the colored-gain-noise model of dye lasers are analyzed and compared with those for the loss-noise model. For correlation times ¿ larger than the deterministic relaxation time td, we show with the use of the adiabatic approximation that C(t) values coincide for both models. For small correlation times we use a method that provides explicit expressions of non-Markovian correlation functions, approximating simultaneously short- and long-time behaviors. Comparison with numerical simulations shows excellent results simultaneously for short- and long-time regimes. It is found that, when the correlation time of the noise increases, differences between the gain- and loss-noise models tend to disappear. The decay of C(t) for both models can be described by a time scale that approaches the deterministic relaxation time. However, in contrast with the loss-noise model, a secondary time scale remains for large times for the gain-noise model, which could allow one to distinguish between both models.8 p.application/pdfeng(c) The American Physical Society, 1991LàsersFluctuacions (Física)Processos estocàsticsLasersFluctuations (Physics)info:eu-repo/semantics/article62563info:eu-repo/semantics/openAccess