title: Matching of group velocities by spatial walk-off in collinear three-wave interaction with tilted pulses.
abstract: We demonstrate that, for tilted pulses, the contribution to group velocity that is due to spatial walk-off can compensate for the group-velocity mismatch in three-wave interactions. With 100-fs, 0.4-Zmicrom pump pulses in beta-barium borate, we obtained efficient parametric generation of collinear superfluorescence tunable in the range from 0.456 to 3.25 microm.
authors.forename: R
authors.initials: R
authors.lastname: Danielius
authors.forename: A
authors.initials: A
authors.lastname: Piskarskas
authors.forename: P
authors.initials: P
authors.lastname: Di Trapani
authors.forename: A
authors.initials: A
authors.lastname: Andreoni
authors.forename: C
authors.initials: C
authors.lastname: Solcia
authors.forename: P
authors.initials: P
authors.lastname: Foggi