Abstract

A remarkable feature about the temporal optical soliton is that it can be phase-matched to new frequencies, emitting so-called resonant radiation (RR). This constitutes an efficient source of ultrafast pulses in emerging wavelength regimes, and plays a vital role in coherently extending the supercontinuum bandwidth [1]. RR waves are usually invoked by four-wave mixing (4WM) through the self-phase modulation (SPM) term A|A|², or more recently through the conjugate SPM term A^∗|A|², or the third-harmonic generation (THG) term A³ [2,3]. We here show with theory and experiments that three-wave mixing (3WM) also supports soliton-induced RR waves [4].

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