title: Oscillations in superradiance with long-duration pumping pulses.
abstract: We describe an experimental study of a new regime of superradiance characterized by relaxation oscillations, which is obtained in the case of long-duration pumping pulses. A qualitative interpretation of our results is given using the mean-field approximation in conjunction with broadband excitation. A more quantitative interpretation is also given, in which propagation effects are explicitely taken into account and the excitation is purely monochromatic.
authors.forename: A
authors.initials: A
authors.lastname: Crubellier
authors.forename: S
authors.initials: S
authors.lastname: Liberman
authors.forename: D
authors.initials: D
authors.lastname: Mayou
authors.forename: P
authors.initials: P
authors.lastname: Pillet
authors.forename: M G
authors.initials: MG
authors.lastname: Schweighofer