We report on direct observation of temporal contrast degradation of short pulses amplified by optical parametric chirped-pulse amplification. We show that, despite injection seeding, quantum-noise-induced fast modulations (<50 ps) of the temporal profile of the pump pulse are imprinted on the spectrum of the amplified chirped pulse and give rise to a large picosecond pedestal in the time domain.
© 2005 Optical Society of America
Nicolas Forget, Arnaud Cotel, Erik Brambrink, Patrick Audebert, Catherine Le Blanc, Aurélie Jullien, Olivier Albert, and Gilles Chériaux, "Pump-noise transfer in optical parametric chirped-pulse amplification," Opt. Lett. 30, 2921-2923 (2005)