Controllable nonlocal behaviour by cascaded second-harmonic generation of fs pulses

Morten Bache, Ole Bang, Wieslaw Krolikowski, Jeffrey Moses, Frank W. Wise

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Second-harmonic generation (SHG) of ultra-short pulses can act as a prototypical nonlocal nonlinear model, since the strength and nature of the temporal nonlocality can be controlled through the phase-mismatch parameter. The presence of a group-velocity mismatch namely implies that when the phase mismatch is small the nonlocal response function becomes oscillatory, while for large phase mismatch it becomes localized. In the transition between the two regimes the strength of the nonlocality diverges, and the system goes from a weakly nonlocal to a strongly nonlocal state. When simulating soliton compression to few-cycle pulses in the cascaded quadratic soliton compressor, the spectral content of the full coupled SHG model is predicted by the nonlocal model even when few-cycle pulses are interacting.
Original languageEnglish
Title of host publicationFirst Mediterrenean Photonics Conference
EditorsA. Cutolo, M. N. Armenise, R. Ramponi
Place of PublicationItaly
PublisherEdizioni Giorgio Lieto
Publication date2008
Publication statusPublished - 2008
EventFirst Mediterrenean Photonics Conference - Italy
Duration: 1 Jan 2008 → …
Conference number: 1


ConferenceFirst Mediterrenean Photonics Conference
Period01/01/2008 → …

Cite this

Bache, M., Bang, O., Krolikowski, W., Moses, J., & Wise, F. W. (2008). Controllable nonlocal behaviour by cascaded second-harmonic generation of fs pulses. In A. Cutolo, M. N. Armenise, & R. Ramponi (Eds.), First Mediterrenean Photonics Conference (pp. 197-199). Edizioni Giorgio Lieto.