title: Engineering of multicolor spatial solitons with chirped-period quasi-phase-matching gratings in optical parametric amplification.
abstract: We demonstrate the excitation of solitons in a parametric amplifier with enhanced signal content through the use of a chirped-period quasi-phase-matching grating. This technique affords a low soliton threshold at the input end of a parametric amplifier, and the subsequent transformation to a desired soliton that exists at nonzero wave-vector mismatch through the use of a linearly chirped quasi-phase-matching grating. This approach has an advantage over direct excitation of solitons at nonzero wave-vector mismatch in uniform nonlinear materials and holds potential for improving the efficiency and mode quality of high-gain parametric amplifiers.
authors.affiliation: E. L. Ginzton Laboratory, Stanford University, Stanford, California 94305, USA. schober@stanford.edu
authors.forename: Andrew M
authors.initials: AM
authors.lastname: Schober
authors.forename: Martin M
authors.initials: MM
authors.lastname: Fejer
authors.forename: Silvia
authors.initials: S
authors.lastname: Carrasco
authors.forename: Lluis
authors.initials: L
authors.lastname: Torner