Mode conversion in quadratic nonlinear crystals

Tal Ellenbogen*, Ido Dolev, Ady Arie

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


We propose a novel all-optical, nonlinear mode-conversion scheme based on cascaded three-wave-mixing phase-matched interactions in quadratic nonlinear crystals. We demonstrate the method experimentally by performing all-optical mode conversion of an input 1636 nm Hermite-Gaussian mode from the zeroth order to the first order using two periodically poled LiNbO3 crystals. Nonlinear mode conversion of an input beam into a higher order, orthogonally polarized output beam can be realized using only one quasiperiodic nonlinear structure. Moreover, it can be enhanced for conversion of complex modes, e.g., Laguerre-Gaussian or Bessel modes.

Original languageEnglish
Pages (from-to)1207-1209
Number of pages3
JournalOptics Letters
Issue number11
StatePublished - 1 Jun 2008


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