title: Pulse compression and gain enhancement in a degenerate optical parametric amplifier based on aperiodically poled crystals.
abstract: 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.
authors.forename: David
authors.initials: D
authors.lastname: Artigas
authors.forename: Derryck T
authors.initials: DT
authors.lastname: Reid
authors.forename: Martin M
authors.initials: MM
authors.lastname: Fejer
authors.forename: Lluis
authors.initials: L
authors.lastname: Torner