Designing quadratic nonlinear photonic crystal fibers for soliton compression to few-cycle pulses

Morten Bache, Jeffrey Moses, Jesper Lægsgaard, Ole Bang, Frank Wise

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    Abstract

    Second-harmonic generation (SHG) in the limit of large phase mismatch, given by Deltabeta=beta2-2beta1 effectively induces a Kerr-like nonlinear phase shift on the fundamental wave (FW). The phase mismatch determines the sign and magnitude of the effective Kerr nonlinearity, making large negative phase shifts accessible. This self-defocusing nonlinearity can be used to compress a pulse when combined with normal dispersion, and problems normally encountered due to self-focusing in cubic media are avoided. Thus, having no power limit, in bulk media a self-defocusing soliton compressor can create high-energy near single-cycle fs pulses (Liu et al., 2006). However, the group-velocity mismatch (GVM) between the FW and second harmonic (SH), given by the inverse group velocity difference d12=1/Vg,1 - 1/Vg,2, limits the pulse quality and compression ratio. Especially very short input pulses (
    Original languageEnglish
    Title of host publicationEuropean Conference on Lasers and Electro-Optics, 2007 and the International Quantum Electronics Conference. CLEOE-IQEC 2007.
    Number of pages639
    PublisherIEEE
    Publication date2007
    PagesCJ1-3-WED
    ISBN (Print)978-1-4244-0931-0
    DOIs
    Publication statusPublished - 2007
    EventConference on Lasers and Electro-Optics and International Quantum Electronics Conference 2007 - Munich, Germany
    Duration: 17 Jun 200722 Jun 2007
    http://2007.cleoeurope.org/

    Conference

    ConferenceConference on Lasers and Electro-Optics and International Quantum Electronics Conference 2007
    Country/TerritoryGermany
    CityMunich
    Period17/06/200722/06/2007
    Internet address

    Bibliographical note

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