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Published on: July 12, 2017
Starting Dynamics of a Linear-Cavity Femtosecond Mamyshev Oscillator
Yi-Hao Chen1, Pavel Sidorenko1, Robert Thorne2,3
1School of Applied and Engineering Physics, Cornell University, Ithaca NY 14853, USA.
Abstract:
Mamyshev oscillators can generate high-power femtosecond pulses, but starting a mode-locked state has remained a major challenge due to the suppression of continuous-wave lasing. Here, we study the starting dynamics of a linear Mamyshev oscillator designed to generate high-power femtosecond pulses while avoiding component damage. Reliable starting to stable mode-locking is achieved with a combination of modulation of the pump power and shifting of a filter passband. The starting process is automated, with full electronic control. The laser delivers 21-nJ pulses that are dechirped to 65 fs in duration outside the cavity.
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