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John B. Geddes

Selected Works

Hermite polynomials; Mode-locked laser; Spectral method; Noise

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Noise-Induced Oscillations In An Actively Mode-Locked Laser, Kelly Black, John Geddes Mar 2012

Noise-Induced Oscillations In An Actively Mode-Locked Laser, Kelly Black, John Geddes

John B. Geddes

Oscillations induced by noise are examined for an actively mode-locked laser. Additive noise, proportional noise, and combined noise are considered. Spatial noise is approximated by Hermite expansions and temporal noise is approximated via an approximation of the variance of the random variable using a fourth-order Adams–Bashforth scheme. The approach is verified on a sample problem and used to explore the governing equations for a mode-locked laser. The inclusion of multiplicative noise leads to much wider pulses and much longer intervals between pulses.