Fiber lasers mode-locked due to nonlinear polarization evolution: Golden mean of cavity length

Recent results on the pulsed generation in high-energy fiber lasers that are passively mode-locked owing to the nonlinear polarization evolution are generalized for the first time. The first analysis of the cavity length that is optimized with respect to practical applications is presented. The analysis is based on the concordant experimental results and the results of numerical simulation.

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