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Influences of initial pulse parameters on self-similar evolution efficiency in fiber amplifiers with gain shaping are discussed. Optimal center wavelength, duration, negative chirp and triangular profile can minimize the gain-shaping disturbance and accelerate self-similar amplification.
Numerical studies on the position effect of spectral filter (SF) in an all-normal-dispersion fiber laser are presented in this paper. The dependence of the available bandwidth range of the SF on its position in the laser cavity is investigated. Our simulation results suggest that the output pulses with high energy and strong peak power can be obtained when the SF with an appropriate spectral bandwidth...
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