Ultrashort-pulse generation in degenerate optical parametric oscillators.
Solitary-pulse generation in a degenerate optical parametric oscillator subjected to continuous-wave pumping is investigated theoretically. As with solitary lasers, pulse shaping is a phase effect induced by the interplay between self-phase modulation and group-delay dispersion, but pulse stability is ensured by the parametric gain itself and does not require any fast saturable absorber action.
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Longhi