Abstract
In this paper, we study theoretically the generation of high repetition
rate short pulses using fiber optical parametric amplification. We show that
the pulse shape and duration depend on the signal location relatively to the
pump frequency. We demonstrate that in order to get the shortest pulse width,
the signal must be located at one of the extremities of the gain spectrum
associated with the pump peak power. We derive the analytical expression of
the pulse shape in this case and compare it to the exponential gain regime
case. Using numerical simulations, we also analyze the impact of walk-off
and pump phase modulation that is required to suppress Stimulated Brillouin
Scattering and derive guidelines to design stable train of short and high
repetition rate pulses.
© 2012 IEEE
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