Contribution of third-harmonic and negative-frequency polarization fields to self-phase modulation in nonlinear media

Cristian Redondo Lourés, Andrea Armaroli, Fabio Biancalana

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We study the influence of third-harmonic generation (THG) and negative-frequency polarization terms in the selfphase modulation (SPM) of short and intense pulses in Kerr media. We find that THG induces additional symmetric lobes in the SPM process. The amplitude of these new sidebands are greatly enhanced by the contributions of the negative-frequency Kerr (NFK) term and the shock operator. We compare our theoretical predictions based on the analytical nonlinear phase with simulations carried out by using the full unidirectional pulse propagation equation (UPPE).

Original languageEnglish
Pages (from-to)613-616
Number of pages4
JournalOptics Letters
Volume40
Issue number4
DOIs
Publication statusPublished - 2015

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