We describe theoretically a method of obtaining pulse compression and simultaneously improving amplification in a degenerate optical parametric amplifier by use of quasi-phase-matched engineered crystals. The scheme combines the possibility of increasing the signal spectral bandwidth that is offered by a degenerate parametric amplifier with the ability of engineered aperiodically poled crystals to compensate for group-velocity mismatch.
© 2002 Optical Society of America
(190.4970) Nonlinear optics : Parametric oscillators and amplifiers
(190.7110) Nonlinear optics : Ultrafast nonlinear optics
(320.2250) Ultrafast optics : Femtosecond phenomena
(320.5520) Ultrafast optics : Pulse compression
David Artigas, Derryck T. Reid, Martin M. Fejer, and Lluis Torner, "Pulse compression and gain enhancement in a degenerate optical parametric amplifier based on aperiodically poled crystals," Opt. Lett. 27, 442-444 (2002)