Theory of second-harmonic generation in silica nanowires

Jesper Lægsgaard (Invited author)

Research output: Contribution to journalConference articleResearchpeer-review

1 Downloads (Pure)


The possibility of second-harmonic generation based on surface dipole and bulk multipole nonlinearities in silica nanowires is investigated numerically. Both circular and microstructured nanowires are considered. Phase matching is provided by propagating the pump field in the fundamental mode, while generating the second harmonic in one of the modes of the LP11 multiplet. This is shown to work in both circular and microstructured nanowires, although only one of the LP11 modes can be phase-matched in the microstructure. The prospect of obtaining large conversion efficiencies in silica-based nanowires is critically discussed, based on simulations of second-harmonic generation in nanowires with a fluctuating phase-matching wavelength. It is concluded that efficient wavelength conversion will either require strong improvements in the nanowire uniformity, or an increase of the second-order nonlinearity by at least an order of magnitude by use of a different base material, or highly polarizable surface coatings.
Original languageEnglish
JournalProceedings of SPIE, the International Society for Optical Engineering
Pages (from-to)77140H
Publication statusPublished - 2010
EventPhotonics Europe 2010: Photonic Crystal Fibers IV - The Square Conference Center, Brussels, Belgium
Duration: 12 Apr 201016 Apr 2010


ConferencePhotonics Europe 2010
LocationThe Square Conference Center
Internet address

Bibliographical note

Theory of second-harmonic generation in silica nanowires


  • microstructured fibers
  • nanowires
  • second-harmonic generation

Fingerprint Dive into the research topics of 'Theory of second-harmonic generation in silica nanowires'. Together they form a unique fingerprint.

Cite this