Abstract

We have developed a pervious Raman extracavity laser intensity equation by taking into account the nonlinear Kerr effect and group velocity dispersion and by considering the chalcogenide glass as an active material for its high Raman gain. The propagation of fundamental dark solitons is simulated by the combination of the Crank–Nicolson scheme, FDTD, and the Gause–Seidel iteration scheme. The results show that for a given Kerr nonlinearity there exists a critical minimum input peak power that makes a laser self-tunable such that the different frequency component is achieved by control of the input intensity above the critical intensity.

© 2010 Optical Society of America

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