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Modes of unstable resonators with a saturable gain guide


, : Modes of unstable resonators with a saturable gain guide. Applied Optics 40(6): 921-929

We investigate theoretically gain-guided modes in unstable resonators with a uniformly reflective mirror in the area of highly efficient steady-state lasers, where the gain saturation is the main efficiency factorly. We achieved self-consistent Hermite-Gaussian modes at significant gain saturation as well as the connection of the mode's scaling factor and mode amplitude coefficients with the system parameters by using complex paraxial wave optics. A new stabilization mechanism, saturation guiding, works together with gain guiding in unstable resonators. We obtained more actual results for mode generation and selection by integrating the laser rate equation.

US$29.90

PMID: 18357074


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